¿ªÔÆÌåÓý

ctrl + shift + ? for shortcuts
© 2025 Groups.io
Date

Re: tailstock end of Unimat alloy bed...

 

Sounds like a good thing I finally got a follower rest for my larger lathe, since I can't seem to find M8x1 allthread. Looks like I either need 127/120 tooth change gears, or taps and dies. Also gotta check to see if the leadscrew is LH or RH threaded... Looks like I found another rabbit hole to dive down!

Bill in OKC

William R. Meyers, MSgt, USAF(Ret.)

Aphorisms to live by:
Good judgement comes from experience. Experience comes from bad judgement.?
SEMPER GUMBY!
Improvise, Adapt, and Overcome.
Physics doesn't care about your schedule.
The only reason I know anything is because I've done it wrong enough times to START to know better.
Expect in one hand, expectorate in the other. See which one gets full first.



On Monday, July 17, 2023 at 10:17:54 AM CDT, g steinback via groups.io <gsteinba52@...> wrote:


The woodworking version was designed for hand-held tools, and as you can see there is no feed screw!

Clearance may be an issue (along with many others) for anyone wishing to add extended way bars.


Re: tailstock end of Unimat alloy bed...

 

The woodworking version was designed for hand-held tools, and as you can see there is no feed screw!

Clearance may be an issue (along with many others) for anyone wishing to add extended way bars.


Re: SHERLINE TO UNIMAT 3 THREADING ATTACHMENT ADAPTER DRAWINGS

 

That¡¯s great Peter, thanks very much for the reply and clarification.


Re: SHERLINE TO UNIMAT 3 THREADING ATTACHMENT ADAPTER DRAWINGS

 

1. Yes, thas looking at it from the lathe side.
2. Not sure which photo you mean the Bush is threaded m16 and screws? into the backing plate? to support the shaft that drives the leadscrew. The drawing doesn't show individual thread points the same as it doesn't show gear teeth, this is a pretty standard drawing convention.
3. AF means across flats, pictures attached showing mine in its standard running configuration, one more gear is attached to the spindle and clamped with the handle, the curved slot is for the mounting bolt and the 4mm washer fits between? the machine and plate as a spacer on that bolt.
Sent from


From: [email protected] <[email protected]> on behalf of Peter Brooks <peter@...>
Sent: Sunday, July 16, 2023 3:40:52 pm
To: Mike Gidley <mike.61dley@...>; [email protected] <[email protected]>
Subject: Re: [Unimat] SHERLINE TO UNIMAT 3 THREADING ATTACHMENT ADAPTER DRAWINGS

I think I've just about understood the 'unimat3 threading attachmentpdf' drawing, but have a few quick queries:

1) am I right in thinking that the plate is shown upside down in the drawing, and in use is rotated 180 degrees? So that the M16 threaded hole is at the lead screw?

2) in the photo of the components on the drawing it doesn't look as though the bush is threaded - is this because it isn't done yet, or is it not necessary to do so?

3) and finally, what does 17AF mean? As noted just above the bush. Apologies for my ignorance!

Thanks,
Peter


Re: tailstock end of Unimat alloy bed...

 

I was aware that they were sold, but I'd never seen a Unimat except in photographs until fairly recently. I first SAW an actual Unimat about 2018 or 19, friend of mine had 4 of them for sale as a group, for $1600, was wasn't willing to sell just one. Not that I could have afforded even the $400, at the time. ;) But I saw them in the back of his van, at the Southwest Ironworks Wood and Metalworker's Swapmeet and Faire. First laid hands on one in December of 2021, I guess it was.?

The rails I made for my SL were about as long as the ones in the photo at Tony's Lathes site, but I didn't like the ends sticking out and just hanging in the air. That was 300mm length 12mm linear guide rod. So I shortened them to stock length for the standard ways. but I was in the mini-lathe crowd for more than a decade, and had wanted to modify my HF 7x10 quite a bit. Didn't actually do much with it, as I found a Atlas TH42, which is about double the capacity of the 7x10. And while the 7x10 was only around 115lbs, the 10x24 TH42 was closer to 270lbs. That is good for some things, but it's not very portable! ;) Extended way bars will reduce the portability a bit, but it won't be that much heavier even with the bed extension. A stock machine without a lot of accessories, and in the original box, weighs about 25lbs. I would not have cut down a bed to do this project, but I knew about a couple of folks who had, and one was willing to sell me his remnant for a reasonable cost.??

Had to do yardwork this morning, first thing, but working on the shop in on the calendar now that the grass is a bit shorter. It's been raining off and on the past couple of weeks, and the grass was getting rather tall, and we're expecting more rain this afternoon or evening... And temps in the 90's, so didn't want to wait on it.?

Bill in OKC

William R. Meyers, MSgt, USAF(Ret.)

Aphorisms to live by:
Good judgement comes from experience. Experience comes from bad judgement.?
SEMPER GUMBY!
Improvise, Adapt, and Overcome.
Physics doesn't care about your schedule.
The only reason I know anything is because I've done it wrong enough times to START to know better.
Expect in one hand, expectorate in the other. See which one gets full first.



On Sunday, July 16, 2023 at 08:40:49 AM CDT, Jkle379184 via groups.io <jkle379184@...> wrote:


Interesting Unimat used to sell extended beds rails. this is from the lathe site??
"


Part Long-bed wood turning kit with turning tools, drive centre (Part 1205) and extra-long bed rails (Part 1395). Although not very clear from the picture the T-rest being used is the fully-adjustable 4.75-inch long Part 1202.? A completely different 2-inch long triangular rest, Part 1201, was also offered. Described by the makers as a "simple rest" it had its front edge on centre height and was non-adjustable."


Re: tailstock end of Unimat alloy bed...

 

¿ªÔÆÌåÓý

Hi Gang:

I thought of raising the headstock and making a spacer to add extra rails and extend the possible length:


If you used another bed casting the extended ways could have a second carriage!

Never did anything, I have larger lathes.

Carl.

On 7/16/2023 9:40 AM, Jkle379184 via groups.io wrote:

Interesting Unimat used to sell extended beds rails. this is from the lathe site??
"


Part Long-bed wood turning kit with turning tools, drive centre (Part 1205) and extra-long bed rails (Part 1395). Although not very clear from the picture the T-rest being used is the fully-adjustable 4.75-inch long Part 1202.? A completely different 2-inch long triangular rest, Part 1201, was also offered. Described by the makers as a "simple rest" it had its front edge on centre height and was non-adjustable."


Re: SHERLINE TO UNIMAT 3 THREADING ATTACHMENT ADAPTER DRAWINGS

 

I think I've just about understood the 'unimat3 threading attachment.pdf' drawing, but have a few quick queries:

1) am I right in thinking that the plate is shown upside down in the drawing, and in use is rotated 180 degrees? So that the M16 threaded hole is at the lead screw?

2) in the photo of the components on the drawing it doesn't look as though the bush is threaded - is this because it isn't done yet, or is it not necessary to do so?

3) and finally, what does 17AF mean? As noted just above the bush. Apologies for my ignorance!

Thanks,
Peter


Re: tailstock end of Unimat alloy bed...

 

Interesting Unimat used to sell extended beds rails. this is from the lathe site??
"


Part Long-bed wood turning kit with turning tools, drive centre (Part 1205) and extra-long bed rails (Part 1395). Although not very clear from the picture the T-rest being used is the fully-adjustable 4.75-inch long Part 1202.? A completely different 2-inch long triangular rest, Part 1201, was also offered. Described by the makers as a "simple rest" it had its front edge on centre height and was non-adjustable."


Re: What ever happened to Unimat Parts Supply seller?

 

The copy right on his page was in 2012.?
?Jeff

On Saturday, July 15, 2023 at 04:00:01 PM EDT, John K5MO <johnk5mo@...> wrote:


That was a good site.? Neither the email, the domain or the phone number is working. I wonder if John Reece is a member of the list?

On Sat, Jul 15, 2023 at 1:07?PM Jkle379184 via <jkle379184=[email protected]> wrote:
This used to be the best Unimat web site many years ago and then he shut it down and disappeared. I can still find it using the Way Back Machine.

I had heard many years ago the he shut it all down and went back to school. Sad, take a look at what he had. Great web page, full color and he has photos and data on every part and machine. I wonder what happened to all of his parts.
?Jeff


Re: What ever happened to Unimat Parts Supply seller?

 

That was a good site.? Neither the email, the domain or the phone number is working. I wonder if John Reece is a member of the list?

On Sat, Jul 15, 2023 at 1:07?PM Jkle379184 via <jkle379184=[email protected]> wrote:
This used to be the best Unimat web site many years ago and then he shut it down and disappeared. I can still find it using the Way Back Machine.

I had heard many years ago the he shut it all down and went back to school. Sad, take a look at what he had. Great web page, full color and he has photos and data on every part and machine. I wonder what happened to all of his parts.
?Jeff


What ever happened to Unimat Parts Supply seller?

 

This used to be the best Unimat web site many years ago and then he shut it down and disappeared. I can still find it using the Way Back Machine.

I had heard many years ago the he shut it all down and went back to school. Sad, take a look at what he had. Great web page, full color and he has photos and data on every part and machine. I wonder what happened to all of his parts.
?Jeff


Re: Question for you guys that are tech savvy

 

I have some of Dougs belts and also some from Toms Tool Store. Both are great quality. I bought the O ring first and experimented with each one, All worked great. I was hoping the the O rings would slip a bit if needed to act as a safety feature, I would rather have them slip then break something else. So far no slippage and they are easy to put on and remove. I have several Unimats and since I converted two of them to the 24vdc motors years ago, I rarely change belts. I also remove the belts when not using the lathes. I have inclosed a photo of the earlier belts that Unimat used.
?Jeff

On Saturday, July 15, 2023 at 12:17:06 PM EDT, Jkle379184 via groups.io <jkle379184@...> wrote:


I have some of the very old OEM ones, they used two different types, one was a twisted "fibre" tope like and the other was a similar to a mini V belt. The mini V belts look like a O ring and are rounded on the top, but they have a slight flat sides to form a V on the inside.?
Jeff

On Saturday, July 15, 2023 at 11:58:29 AM EDT, Charles Kinzer <ckinzer@...> wrote:


I got belts from Doug Feistamel at his site at



At the bottom of his home page, he describes his belts in detail saying they are polyurethane.? They happen to be orange, but it should be noted that the "industry standard" for O-Ring colors is not a hard and fast rule.? And the ones from Unimat-Vintage-Lathe don't seem to be a standard O-Ring anyway but a purpose designed belt that happens to look just like an O-Ring.

I consider these to be top quality belts.

I used to design instrumentation for deep ocean applications and used many O-Rings for sealing purposes.? There are many materials and "durometers" (hardness) and there are plenty that would not be suitable for a Unimat drive belt.? So, if you just buy some O-Ring, it might or might not be suitable.

Charles E. "Chuck" Kinzer




On Saturday, July 15, 2023 at 08:21:10 AM PDT, Jkle379184 via groups.io <jkle379184@...> wrote:


Ok, I am on a learning curve right now. It looks like the color is important, the industry uses the color of the O ring as a code to tell what it is made of. I got lucky years ago when I ordered the white ones. Here is a link to what the colors mean.

And here is data on the white ones that I have

If you do a web search of -334 or -339 Oring 70 Duro White FDA NBR you will find many sources for them.
Here is a data link for the black ones

Jeff

On Saturday, July 15, 2023 at 10:24:49 AM EDT, Jkle379184 via groups.io <jkle379184@...> wrote:


I got them on Ebay a few years ago, they are? a standard size O ring. I will check my notes to see if I wrote down the O ring sizes.
?Jeff

On Saturday, July 15, 2023 at 09:23:12 AM EDT, OldToolmaker via groups.io <old_toolmaker@...> wrote:


Hello Jeff,
Where do you purchase your white buna belts?
Dick
--
http://www.homemadetools.net/ forum/?OFF- SET-tailstock-center-65965#post105972
?SMALL TURRET TOOL POST PLANS?
?LARGE TURRET TOOL POST PLANS
?MINI- LATHE CARRIAGE LOCK PLANS
?SMALL QC TOOL POST PLANS?
?QUICK CHANGE LATHE TURRET
?MINI LATHE COMPOUND PIVOT MODIFICATION


Re: Question for you guys that are tech savvy

 

I have some of the very old OEM ones, they used two different types, one was a twisted "fibre" tope like and the other was a similar to a mini V belt. The mini V belts look like a O ring and are rounded on the top, but they have a slight flat sides to form a V on the inside.?
Jeff

On Saturday, July 15, 2023 at 11:58:29 AM EDT, Charles Kinzer <ckinzer@...> wrote:


I got belts from Doug Feistamel at his site at



At the bottom of his home page, he describes his belts in detail saying they are polyurethane.? They happen to be orange, but it should be noted that the "industry standard" for O-Ring colors is not a hard and fast rule.? And the ones from Unimat-Vintage-Lathe don't seem to be a standard O-Ring anyway but a purpose designed belt that happens to look just like an O-Ring.

I consider these to be top quality belts.

I used to design instrumentation for deep ocean applications and used many O-Rings for sealing purposes.? There are many materials and "durometers" (hardness) and there are plenty that would not be suitable for a Unimat drive belt.? So, if you just buy some O-Ring, it might or might not be suitable.

Charles E. "Chuck" Kinzer




On Saturday, July 15, 2023 at 08:21:10 AM PDT, Jkle379184 via groups.io <jkle379184@...> wrote:


Ok, I am on a learning curve right now. It looks like the color is important, the industry uses the color of the O ring as a code to tell what it is made of. I got lucky years ago when I ordered the white ones. Here is a link to what the colors mean.

And here is data on the white ones that I have

If you do a web search of -334 or -339 Oring 70 Duro White FDA NBR you will find many sources for them.
Here is a data link for the black ones

Jeff

On Saturday, July 15, 2023 at 10:24:49 AM EDT, Jkle379184 via groups.io <jkle379184@...> wrote:


I got them on Ebay a few years ago, they are? a standard size O ring. I will check my notes to see if I wrote down the O ring sizes.
?Jeff

On Saturday, July 15, 2023 at 09:23:12 AM EDT, OldToolmaker via groups.io <old_toolmaker@...> wrote:


Hello Jeff,
Where do you purchase your white buna belts?
Dick
--
http://www.homemadetools.net/ forum/?OFF- SET-tailstock-center-65965#post105972
?SMALL TURRET TOOL POST PLANS?
?LARGE TURRET TOOL POST PLANS
?MINI- LATHE CARRIAGE LOCK PLANS
?SMALL QC TOOL POST PLANS?
?QUICK CHANGE LATHE TURRET
?MINI LATHE COMPOUND PIVOT MODIFICATION


Re: Question for you guys that are tech savvy

 

Bill
?I completely agree with you. That is why years ago a looked up the size and ordered these. I just ordered what I knew would fit and got what I got.
?Jeff

On Saturday, July 15, 2023 at 11:49:54 AM EDT, Bill in OKC too via groups.io <wmrmeyers@...> wrote:


The FDA certification will make them more expensive, but at $3.68 for 20 of them, I doubt it's all that significant! I identify as a cheap bastrich, but even I won't worry about that! ;)

Bill in OKC

William R. Meyers, MSgt, USAF(Ret.)

Aphorisms to live by:
Good judgement comes from experience. Experience comes from bad judgement.?
SEMPER GUMBY!
Improvise, Adapt, and Overcome.
Physics doesn't care about your schedule.
The only reason I know anything is because I've done it wrong enough times to START to know better.
Expect in one hand, expectorate in the other. See which one gets full first.



On Saturday, July 15, 2023 at 10:42:58 AM CDT, Jkle379184 via groups.io <jkle379184@...> wrote:


From the package labels, I think that the 70 Duro is the measure of hardness on the shore scale, White is the color, FDA is FDA approved, NBR is the compound - Buna- Nitrile. All I know is they were cheap and have worked for a long time for me.?
?Jeff

On Saturday, July 15, 2023 at 11:29:30 AM EDT, Andrei <calciu1@...> wrote:


If the o-ring is made of buna-n that it is buna-n. The color does not change the chemistry.?

Maybe color coding O-rings would help avoid something as erroneous as placing an EP O-ring where a nitrile O-ring ought to be. The industry's answer to this was to designate black for nitrile, brown for fluorocarbon, red for Neoprene, rust for Silicone, blue for fluorosilicone, and purple for EP.

The FDA designation means that it can be used in manufacturing places where food or drugs are processed because the Buna-n material is safe and does not leach any chemicals.

Andrei?



Get


From: [email protected] <[email protected]> on behalf of Jkle379184 via groups.io <jkle379184@...>
Sent: Saturday, July 15, 2023 11:20:59 AM
To: [email protected] <[email protected]>
Subject: Re: [Unimat] Question for you guys that are tech savvy
?
Ok, I am on a learning curve right now. It looks like the color is important, the industry uses the color of the O ring as a code to tell what it is made of. I got lucky years ago when I ordered the white ones. Here is a link to what the colors mean.

And here is data on the white ones that I have

If you do a web search of -334 or -339 Oring 70 Duro White FDA NBR you will find many sources for them.
Here is a data link for the black ones

Jeff

On Saturday, July 15, 2023 at 10:24:49 AM EDT, Jkle379184 via groups.io <jkle379184@...> wrote:


I got them on Ebay a few years ago, they are? a standard size O ring. I will check my notes to see if I wrote down the O ring sizes.
?Jeff

On Saturday, July 15, 2023 at 09:23:12 AM EDT, OldToolmaker via groups.io <old_toolmaker@...> wrote:


Hello Jeff,
Where do you purchase your white buna belts?
Dick
--
http://www.homemadetools.net/ forum/?OFF- SET-tailstock-center-65965#post105972
?SMALL TURRET TOOL POST PLANS?
?LARGE TURRET TOOL POST PLANS
?MINI- LATHE CARRIAGE LOCK PLANS
?SMALL QC TOOL POST PLANS?
?QUICK CHANGE LATHE TURRET
?MINI LATHE COMPOUND PIVOT MODIFICATION


Re: Question for you guys that are tech savvy

 

I got belts from Doug Feistamel at his site at



At the bottom of his home page, he describes his belts in detail saying they are polyurethane.? They happen to be orange, but it should be noted that the "industry standard" for O-Ring colors is not a hard and fast rule.? And the ones from Unimat-Vintage-Lathe don't seem to be a standard O-Ring anyway but a purpose designed belt that happens to look just like an O-Ring.

I consider these to be top quality belts.

I used to design instrumentation for deep ocean applications and used many O-Rings for sealing purposes.? There are many materials and "durometers" (hardness) and there are plenty that would not be suitable for a Unimat drive belt.? So, if you just buy some O-Ring, it might or might not be suitable.

Charles E. "Chuck" Kinzer




On Saturday, July 15, 2023 at 08:21:10 AM PDT, Jkle379184 via groups.io <jkle379184@...> wrote:


Ok, I am on a learning curve right now. It looks like the color is important, the industry uses the color of the O ring as a code to tell what it is made of. I got lucky years ago when I ordered the white ones. Here is a link to what the colors mean.

And here is data on the white ones that I have

If you do a web search of -334 or -339 Oring 70 Duro White FDA NBR you will find many sources for them.
Here is a data link for the black ones

Jeff

On Saturday, July 15, 2023 at 10:24:49 AM EDT, Jkle379184 via groups.io <jkle379184@...> wrote:


I got them on Ebay a few years ago, they are? a standard size O ring. I will check my notes to see if I wrote down the O ring sizes.
?Jeff

On Saturday, July 15, 2023 at 09:23:12 AM EDT, OldToolmaker via groups.io <old_toolmaker@...> wrote:


Hello Jeff,
Where do you purchase your white buna belts?
Dick
--
http://www.homemadetools.net/ forum/?OFF- SET-tailstock-center-65965#post105972
?SMALL TURRET TOOL POST PLANS?
?LARGE TURRET TOOL POST PLANS
?MINI- LATHE CARRIAGE LOCK PLANS
?SMALL QC TOOL POST PLANS?
?QUICK CHANGE LATHE TURRET
?MINI LATHE COMPOUND PIVOT MODIFICATION


Re: Question for you guys that are tech savvy

 

The FDA certification will make them more expensive, but at $3.68 for 20 of them, I doubt it's all that significant! I identify as a cheap bastrich, but even I won't worry about that! ;)

Bill in OKC

William R. Meyers, MSgt, USAF(Ret.)

Aphorisms to live by:
Good judgement comes from experience. Experience comes from bad judgement.?
SEMPER GUMBY!
Improvise, Adapt, and Overcome.
Physics doesn't care about your schedule.
The only reason I know anything is because I've done it wrong enough times to START to know better.
Expect in one hand, expectorate in the other. See which one gets full first.



On Saturday, July 15, 2023 at 10:42:58 AM CDT, Jkle379184 via groups.io <jkle379184@...> wrote:


From the package labels, I think that the 70 Duro is the measure of hardness on the shore scale, White is the color, FDA is FDA approved, NBR is the compound - Buna- Nitrile. All I know is they were cheap and have worked for a long time for me.?
?Jeff

On Saturday, July 15, 2023 at 11:29:30 AM EDT, Andrei <calciu1@...> wrote:


If the o-ring is made of buna-n that it is buna-n. The color does not change the chemistry.?

Maybe color coding O-rings would help avoid something as erroneous as placing an EP O-ring where a nitrile O-ring ought to be. The industry's answer to this was to designate black for nitrile, brown for fluorocarbon, red for Neoprene, rust for Silicone, blue for fluorosilicone, and purple for EP.

The FDA designation means that it can be used in manufacturing places where food or drugs are processed because the Buna-n material is safe and does not leach any chemicals.

Andrei?



Get


From: [email protected] <[email protected]> on behalf of Jkle379184 via groups.io <jkle379184@...>
Sent: Saturday, July 15, 2023 11:20:59 AM
To: [email protected] <[email protected]>
Subject: Re: [Unimat] Question for you guys that are tech savvy
?
Ok, I am on a learning curve right now. It looks like the color is important, the industry uses the color of the O ring as a code to tell what it is made of. I got lucky years ago when I ordered the white ones. Here is a link to what the colors mean.

And here is data on the white ones that I have

If you do a web search of -334 or -339 Oring 70 Duro White FDA NBR you will find many sources for them.
Here is a data link for the black ones

Jeff

On Saturday, July 15, 2023 at 10:24:49 AM EDT, Jkle379184 via groups.io <jkle379184@...> wrote:


I got them on Ebay a few years ago, they are? a standard size O ring. I will check my notes to see if I wrote down the O ring sizes.
?Jeff

On Saturday, July 15, 2023 at 09:23:12 AM EDT, OldToolmaker via groups.io <old_toolmaker@...> wrote:


Hello Jeff,
Where do you purchase your white buna belts?
Dick
--
http://www.homemadetools.net/ forum/?OFF- SET-tailstock-center-65965#post105972
?SMALL TURRET TOOL POST PLANS?
?LARGE TURRET TOOL POST PLANS
?MINI- LATHE CARRIAGE LOCK PLANS
?SMALL QC TOOL POST PLANS?
?QUICK CHANGE LATHE TURRET
?MINI LATHE COMPOUND PIVOT MODIFICATION


Re: Question for you guys that are tech savvy

 

From the package labels, I think that the 70 Duro is the measure of hardness on the shore scale, White is the color, FDA is FDA approved, NBR is the compound - Buna- Nitrile. All I know is they were cheap and have worked for a long time for me.?
?Jeff

On Saturday, July 15, 2023 at 11:29:30 AM EDT, Andrei <calciu1@...> wrote:


If the o-ring is made of buna-n that it is buna-n. The color does not change the chemistry.?

Maybe color coding O-rings would help avoid something as erroneous as placing an EP O-ring where a nitrile O-ring ought to be. The industry's answer to this was to designate black for nitrile, brown for fluorocarbon, red for Neoprene, rust for Silicone, blue for fluorosilicone, and purple for EP.

The FDA designation means that it can be used in manufacturing places where food or drugs are processed because the Buna-n material is safe and does not leach any chemicals.

Andrei?



Get


From: [email protected] <[email protected]> on behalf of Jkle379184 via groups.io <jkle379184@...>
Sent: Saturday, July 15, 2023 11:20:59 AM
To: [email protected] <[email protected]>
Subject: Re: [Unimat] Question for you guys that are tech savvy
?
Ok, I am on a learning curve right now. It looks like the color is important, the industry uses the color of the O ring as a code to tell what it is made of. I got lucky years ago when I ordered the white ones. Here is a link to what the colors mean.

And here is data on the white ones that I have

If you do a web search of -334 or -339 Oring 70 Duro White FDA NBR you will find many sources for them.
Here is a data link for the black ones

Jeff

On Saturday, July 15, 2023 at 10:24:49 AM EDT, Jkle379184 via groups.io <jkle379184@...> wrote:


I got them on Ebay a few years ago, they are? a standard size O ring. I will check my notes to see if I wrote down the O ring sizes.
?Jeff

On Saturday, July 15, 2023 at 09:23:12 AM EDT, OldToolmaker via groups.io <old_toolmaker@...> wrote:


Hello Jeff,
Where do you purchase your white buna belts?
Dick
--
http://www.homemadetools.net/ forum/?OFF- SET-tailstock-center-65965#post105972
?SMALL TURRET TOOL POST PLANS?
?LARGE TURRET TOOL POST PLANS
?MINI- LATHE CARRIAGE LOCK PLANS
?SMALL QC TOOL POST PLANS?
?QUICK CHANGE LATHE TURRET
?MINI LATHE COMPOUND PIVOT MODIFICATION


Re: Question for you guys that are tech savvy

Andrei
 

¿ªÔÆÌåÓý

If the o-ring is made of buna-n that it is buna-n. The color does not change the chemistry.?

Maybe color coding O-rings would help avoid something as erroneous as placing an EP O-ring where a nitrile O-ring ought to be. The industry's answer to this was to designate black for nitrile, brown for fluorocarbon, red for Neoprene, rust for Silicone, blue for fluorosilicone, and purple for EP.

The FDA designation means that it can be used in manufacturing places where food or drugs are processed because the Buna-n material is safe and does not leach any chemicals.

Andrei?



Get


From: [email protected] <[email protected]> on behalf of Jkle379184 via groups.io <jkle379184@...>
Sent: Saturday, July 15, 2023 11:20:59 AM
To: [email protected] <[email protected]>
Subject: Re: [Unimat] Question for you guys that are tech savvy
?
Ok, I am on a learning curve right now. It looks like the color is important, the industry uses the color of the O ring as a code to tell what it is made of. I got lucky years ago when I ordered the white ones. Here is a link to what the colors mean.

And here is data on the white ones that I have

If you do a web search of -334 or -339 Oring 70 Duro White FDA NBR you will find many sources for them.
Here is a data link for the black ones

Jeff

On Saturday, July 15, 2023 at 10:24:49 AM EDT, Jkle379184 via groups.io <jkle379184@...> wrote:


I got them on Ebay a few years ago, they are? a standard size O ring. I will check my notes to see if I wrote down the O ring sizes.
?Jeff

On Saturday, July 15, 2023 at 09:23:12 AM EDT, OldToolmaker via groups.io <old_toolmaker@...> wrote:


Hello Jeff,
Where do you purchase your white buna belts?
Dick
--
http://www.homemadetools.net/ forum/?OFF- SET-tailstock-center-65965#post105972
?SMALL TURRET TOOL POST PLANS?
?LARGE TURRET TOOL POST PLANS
?MINI- LATHE CARRIAGE LOCK PLANS
?SMALL QC TOOL POST PLANS?
?QUICK CHANGE LATHE TURRET
?MINI LATHE COMPOUND PIVOT MODIFICATION


Re: Question for you guys that are tech savvy

 

Ok, I am on a learning curve right now. It looks like the color is important, the industry uses the color of the O ring as a code to tell what it is made of. I got lucky years ago when I ordered the white ones. Here is a link to what the colors mean.

And here is data on the white ones that I have

If you do a web search of -334 or -339 Oring 70 Duro White FDA NBR you will find many sources for them.
Here is a data link for the black ones

Jeff

On Saturday, July 15, 2023 at 10:24:49 AM EDT, Jkle379184 via groups.io <jkle379184@...> wrote:


I got them on Ebay a few years ago, they are? a standard size O ring. I will check my notes to see if I wrote down the O ring sizes.
?Jeff

On Saturday, July 15, 2023 at 09:23:12 AM EDT, OldToolmaker via groups.io <old_toolmaker@...> wrote:


Hello Jeff,
Where do you purchase your white buna belts?
Dick
--
http://www.homemadetools.net/ forum/?OFF- SET-tailstock-center-65965#post105972
?SMALL TURRET TOOL POST PLANS?
?LARGE TURRET TOOL POST PLANS
?MINI- LATHE CARRIAGE LOCK PLANS
?SMALL QC TOOL POST PLANS?
?QUICK CHANGE LATHE TURRET
?MINI LATHE COMPOUND PIVOT MODIFICATION


Re: Question for you guys that are tech savvy

Andrei
 

¿ªÔÆÌåÓý

Guys, there is no, none, nada, zero difference between white, red, black buna-n o-rings.?

Just buy what you find when you need it.?

The color is just decorative.

Andrei

Get


From: [email protected] <[email protected]> on behalf of Jkle379184 via groups.io <jkle379184@...>
Sent: Saturday, July 15, 2023 11:02:25 AM
To: [email protected] <[email protected]>
Subject: Re: [Unimat] Question for you guys that are tech savvy
?
I inclosed a O ring Standard chart that you can down load. I checked the Jet Gasket company's web site and I am not seeing the white O rings, they do still sell the black ones and they are $3.68 for 20 of them.

Jeff

On Saturday, July 15, 2023 at 10:54:51 AM EDT, Jkle379184 via groups.io <jkle379184@...> wrote:


I found two of the packages, one is " -339? Oring 70 DURO WHITE FDA NBR" and the other is " -334 ORING 70 DURO WHITE FDA NBR". These are a standard size 3/16" cross section O rings. The company name on the packages packages that I have is Jet Gasket & Seal. I got white at the time, they also come in black and red. The important data is the size -334 and -339 , and Duro 70. I got two packages of 5 and I am still using the original one.
?Jeff

On Saturday, July 15, 2023 at 10:30:02 AM EDT, Andrei <calciu1@...> wrote:



Boatloads of o-rings here. I buy small ones to hold my cadence sensor on the left pedal crank on my bike.?

Measure with a string around your pulling and buy the nearest size down.

Andrei

Get

From: [email protected] <[email protected]> on behalf of Jkle379184 via groups.io <jkle379184@...>
Sent: Saturday, July 15, 2023 10:24:43 AM
To: [email protected] <[email protected]>
Subject: Re: [Unimat] Question for you guys that are tech savvy
?
I got them on Ebay a few years ago, they are? a standard size O ring. I will check my notes to see if I wrote down the O ring sizes.
?Jeff

On Saturday, July 15, 2023 at 09:23:12 AM EDT, OldToolmaker via groups.io <old_toolmaker@...> wrote:


Hello Jeff,
Where do you purchase your white buna belts?
Dick
--
http://www.homemadetools.net/ forum/?OFF- SET-tailstock-center-65965#post105972
?SMALL TURRET TOOL POST PLANS?
?LARGE TURRET TOOL POST PLANS
?MINI- LATHE CARRIAGE LOCK PLANS
?SMALL QC TOOL POST PLANS?
?QUICK CHANGE LATHE TURRET
?MINI LATHE COMPOUND PIVOT MODIFICATION