Re: 7x16 Spindle to Tailstock Alignment Test Outcome
I was think most mini lathes use 6206 ball bearing not tapper.?
FYI If buying the 6206 as a manufacturer it cost $1.10 each. Try buying that bearing at the retailer leave.?
I think the other number for ball bearing is 80206 it same bearing?
Dave?
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Re: What projects are you doing?
I had the same problem 40 years ago.
I traced the threads in a lathe with upside-down HSS cutter.?
It was cheaper to buy a new puller than to buy the tap and die need.?
I could not believe when found that out on pulley pullers. 9/16" x 16.?
Most time if can I will convert to next size larger but could not do that with the pulley pullers.?
Yesterday I need a 9/16" NF tap good news I had one from engine rebuilding.?
They used on Aloris AXA tool post.?
If metric I am SOL , I only have one tap it is 12mm NC. I may some day buy a metric tap set. It has tap over 10,000 holes in life
Dave
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Re: What projects are you doing?
At one time I did a LOT of PVC machining (and some ABS) when working nights after my "day job" at a company filling in for the vacancy in our one-person machine shop for six months.? The parts were for various underwater sensors.
The PVC plumbing pipe and parts we used as raw material was very abrasive and I suspect it is simply not very pure and has a lot of contaminates.? An HSS tool edge would be dull after maybe five parts.? That's when I became very enamored with using a diamond hand hone to touch up the edge.
Here is the business end of one of those underwater probes with multiple water mentoring sensors.? We also used ABS plumbing parts (the grey stuff in the plumbing aisle) for some things and it seemed to be better.
These had three grooves where they plugged in.? Two for O-rings, and one, which is visible, where a washer held by a screw protruded into it to hold it.? We only needed one O-ring to seal, but with two, the sensor did not wobble.? Marketing made a sales pitch out of that touting the "Doiuble O-ring Seal."
 For a small amount of home experimenting, plumbing grade PVC might be fine.? ABS better.? But if you find you are losing our tools edge, don't be surprised.
Charles E. "Chuck" Kinzer
On Tuesday, December 12, 2023 at 05:32:02 AM PST, ChazzC <chaz-creswell@...> wrote:
@Roy said "Scraps of PVC pipe are excellent practice material."
Delrin (Acetal) works better: cuts better (almost like Aluminum, which is also good for practicing).
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Re: What projects are you doing?
@Roy said "Scraps of PVC pipe are excellent practice material."
Delrin (Acetal) works better: cuts better (almost like Aluminum, which is also good for practicing).
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Re: 7x16 Spindle to Tailstock Alignment Test Outcome
The OP's lathe alignment is far better than mine (LMS 5100).
Now that the tapered roller bearings are in the headstock, I may start the tedium of getting a proper headstock to bed alignment.
--
Lone Tree, Colorado? ?USA
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Dear Buffalo John,
Thank you for your explanation(s), it is much appreciated.
[BTW, A great use of the (very) technical term of ¡®mushing¡¯ - language evolution is not dead or confined to kids. ?.]
David
toggle quoted message
Show quoted text
On 11 Dec 2023, at 23:27, BuffaloJohn <johndurbetaki@...> wrote:
? Well, this process is a smoothening version of knurling, called ball burnishing. It works the same way in that the rolling item against the work imprints the surface of the rolling item on the work. In this case, the ball is smooth so if the shaft is rougher than the ball, the shaft will take on the surface of the ball. This can also be done with a cylinder (bearing), but it has a larger contact area, so more force will be needed. In the case of knurling or burnishing, oil is the lubricant to use. Nothing special is required as far as I can tell, because this is not cutting, it is mushing the metal (highly technical term there).
Some ball burnishers use hydraulic oil as the force to hold the ball on the work, and the oil is let to leak just a little so lubricate as the ball turns. This fellow used a bearing and the cap to apply the force, so he needed to put oil on the surface.
On Mon, Dec 11, 2023 at 2:53?PM Charles Devore via <Claremont5= [email protected]> wrote:
way back when, thinking Shell Goria G oil(sp.?), later in a oil field shop on Horz. boring mill I used a reamer appearing item with linear type rollers for 1 1/2" slip pin hole finishes in forgings , just fed it in and back out of drilled holes like a reamer,soluble fluid in that shop, it came in 50 gallon drums, sorry, it's been 50 years ago
In a message dated 12/11/2023 1:09:52 PM Pacific Standard Time, johndurbetaki@... writes:
?
oil
You said you use "fluid" for this. What kind?
?
Mike Taglieri?
On Mon, Dec 11, 2023, 7:38 AM Charles Devore via <Claremont5= [email protected]> wrote:
Burnishing has it's place, doesn't remove material, but looks nice, we always used fluid, I suspect that material is "free machining" type and since it is asia is most likely "leadolly"(no longer used much here=epa), if a really nice bearing surface is needed, just rough it around .004 oversize and then run the parts thru a centerless grinder "plunge cutting each one it goes pretty quick
In a message dated 12/10/2023 11:11:14 PM Pacific Standard Time, d.i.williams= [email protected] writes:
?
Dear Mr Animal, May I ask some related questions for the group to ponder? Firstly, ¡ª Thank you very much (Mr Animal) for posting this? - I found it very interesting and the style of the video was both very sharp & polished. (Pun intended) (I looked at the chuck and thought - this looks like a rather large chuck on a 7 x X lathe?.) 1. Seriously, is this an industry standard practice for polishing metals in a lathe? 2. A tongue in cheek question¡¡ As a matter of interest, if you had a similar large tool held in a milling machine and run using very close passes over the surface, would it (sort of) polish a flat piece of work? I realise it would not have quite the same effect as the work is not spinning. But the tool is. (Unless it was on a rotary table and you were turning it very very fast.?) Perhaps run in two passes at 90deg. to each other. Producing a sort of diamond effect? Does anyone have any knowledge? 3. Would you get a sort of similar(?) effect using a small(?) spherical shaped ball bearing held in a holder on a (mini) lathe? Thank you all, in anticipation. All in all, very interesting. Thank you. Just the harden steel ball doing the polishing. David UK. > On 11 Dec 2023, at 04:31, mike allen < animal@...> wrote: > > > > Watched this a few nites back , pretty cool > > animal > > > > > >
?
?
-- Buffalo John
-- Buffalo John
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Re: What projects are you doing?
Yeah Dave, that's what I thought too. I honestly thought my thread pitch gauge was wrong. It's not, LOL!??I even took one of the inserts to my local hardware store to see if it would screw into a 9/16 x anything else nut as I figured it would be 18.??Nope, it's x 16. I made the inserts and they worked perfectly. I found them for sale for almost $9.00 bucks each with a minimum order quantity of 10. No way was I spending over $100.00 bucks after shipping when I already have a lathe and material ?
Ryan
On Dec 11, 2023 at 11:04?PM -0500, davesmith1800 <davesmith1@...>, wrote:
I would recheck the threads.
9/16 x 18 NF is very common size.?
9/16" x 12 NC
There is also 9/16" x 24 NEF too.?
9/16" 16 is used on pulley pullers and other tools.?
Dave?
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Re: What projects are you doing?
I would recheck the threads.
9/16 x 18 NF is very common size.?
9/16" x 12 NC
There is also 9/16" x 24 NEF too.?
9/16" 16 is used on pulley pullers and other tools.?
Dave?
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Re: 7x16 Spindle to Tailstock Alignment Test Outcome
I've never thought the factory adjusted anything! I've always thought the lathes were shipped assembled because it was cheaper than packaging all the components separately ;-)
The first thing to check is the spindle bearing pre-load. There should be little to no free play; there are some upgrades for the spindle bearings, which are the lowest quality (cheapest) bearings on the market.
Roy
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Re: What projects are you doing?
Exactly why I wanted to know how to single point and in the end converted my lathe to an electronic drive setup on the lead screw.? The die I needed for my last project ( McMaster Carr lists one 9/16 x 16 die) is on the expensive side at $107.69 to make three parts just over 1/2 an inch long each.
Or the one off bearing swivel assembly I made for a Christmas gift a couple years ago.? It's a shaft that goes into an assembly where the shaft rides both in a radial bearing and on a thrust bearing.? The assembly and cap that contains the bearings is threaded M26 x 1. The die to make it was in the $20.00 dollar range and as the threaded section is very short ya couldn't really die thread the cap part so both got single pointed.?
I guess the point is learning to thread opens up a whole range of other projects, do dads and thingamajigs that a lathe is perfect for making.? :-D
Ryan
On Monday, December 11, 2023 at 10:16:03 PM EST, Roy via groups.io <roylowenthal@...> wrote:
That's fine until you find yourself trying to repair something that requires a threaded part you don't have a tap or die for.?
Scraps of PVC pipe are excellent practice material.
If you have a tap of the needed pitch, but, smaller diameter it can be used as a boring tool to cut internal threads.
Roy
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Re: What projects are you doing?
That's fine until you find yourself trying to repair something that requires a threaded part you don't have a tap or die for.?
Scraps of PVC pipe are excellent practice material.
If you have a tap of the needed pitch, but, smaller diameter it can be used as a boring tool to cut internal threads.
Roy
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They're also non-sparking, a nice safety feature when working around flammables.
Roy
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OK, so the ball definitely has to be loose enough to roll with the turning of the work. That wasn't clear to me from the video, which was in a foreign language so I couldn't listen to it. If the ball is rolling, lubricant is less critical.
Mike Taglieri?
Well, this process is a smoothening version of knurling, called ball burnishing. It works the same way in that the rolling item against the work imprints the surface of the rolling item on the work. In this case, the ball is smooth so if the shaft is rougher than the ball, the shaft will take on the surface of the ball. This can also be done with a cylinder (bearing), but it has a larger contact area, so more force will be needed. In the case of knurling or burnishing, oil is the lubricant to use. Nothing special is required as far as I can tell, because this is not cutting, it is mushing the metal (highly technical term there).
Some ball burnishers use hydraulic oil as the force to hold the ball on the work, and the oil is let to leak just a little so lubricate as the ball turns. This fellow used a bearing and the cap to apply the force, so he needed to put oil on the surface.
On Mon, Dec 11, 2023 at 2:53?PM Charles Devore via <Claremont5= [email protected]> wrote:
way back when, thinking Shell Goria G oil(sp.?), later in a oil field shop on Horz. boring mill I used a reamer appearing item with linear type rollers for 1 1/2" slip pin hole finishes in forgings , just fed it in and back out of drilled holes like a reamer,soluble fluid in that shop, it came in 50 gallon drums, sorry, it's been 50 years ago
In a message dated 12/11/2023 1:09:52 PM Pacific Standard Time, johndurbetaki@... writes:
?
oil
You said you use "fluid" for this. What kind?
?
Mike Taglieri?
On Mon, Dec 11, 2023, 7:38 AM Charles Devore via <Claremont5= [email protected]> wrote:
Burnishing has it's place, doesn't remove material, but looks nice, we always used fluid, I suspect that material is "free machining" type and since it is asia is most likely "leadolly"(no longer used much here=epa), if a really nice bearing surface is needed, just rough it around .004 oversize and then run the parts thru a centerless grinder "plunge cutting each one it goes pretty quick
In a message dated 12/10/2023 11:11:14 PM Pacific Standard Time, d.i.williams= [email protected] writes:
?
Dear Mr Animal, May I ask some related questions for the group to ponder? Firstly, ¡ª Thank you very much (Mr Animal) for posting this? - I found it very interesting and the style of the video was both very sharp & polished. (Pun intended) (I looked at the chuck and thought - this looks like a rather large chuck on a 7 x X lathe?.) 1. Seriously, is this an industry standard practice for polishing metals in a lathe? 2. A tongue in cheek question¡¡ As a matter of interest, if you had a similar large tool held in a milling machine and run using very close passes over the surface, would it (sort of) polish a flat piece of work? I realise it would not have quite the same effect as the work is not spinning. But the tool is. (Unless it was on a rotary table and you were turning it very very fast.?) Perhaps run in two passes at 90deg. to each other. Producing a sort of diamond effect? Does anyone have any knowledge? 3. Would you get a sort of similar(?) effect using a small(?) spherical shaped ball bearing held in a holder on a (mini) lathe? Thank you all, in anticipation. All in all, very interesting. Thank you. Just the harden steel ball doing the polishing. David UK. > On 11 Dec 2023, at 04:31, mike allen < animal@...> wrote: > > > > Watched this a few nites back , pretty cool > > animal > > > > > >
?
?
-- Buffalo John
--
Buffalo John
|
Well, this process is a smoothening version of knurling, called ball burnishing. It works the same way in that the rolling item against the work imprints the surface of the rolling item on the work. In this case, the ball is smooth so if the shaft is rougher than the ball, the shaft will take on the surface of the ball. This can also be done with a cylinder (bearing), but it has a larger contact area, so more force will be needed. In the case of knurling or burnishing, oil is the lubricant to use. Nothing special is required as far as I can tell, because this is not cutting, it is mushing the metal (highly technical term there).
Some ball burnishers use hydraulic oil as the force to hold the ball on the work, and the oil is let to leak just a little so lubricate as the ball turns. This fellow used a bearing and the cap to apply the force, so he needed to put oil on the surface.
On Mon, Dec 11, 2023 at 2:53?PM Charles Devore via <Claremont5= [email protected]> wrote:
way back when, thinking Shell Goria G oil(sp.?), later in a oil field shop on Horz. boring mill I used a reamer appearing item with linear type rollers for 1 1/2" slip pin hole finishes in forgings , just fed it in and back out of drilled holes like a reamer,soluble fluid in that shop, it came in 50 gallon drums, sorry, it's been 50 years ago
In a message dated 12/11/2023 1:09:52 PM Pacific Standard Time, johndurbetaki@... writes:
?
oil
You said you use "fluid" for this. What kind?
?
Mike Taglieri?
On Mon, Dec 11, 2023, 7:38 AM Charles Devore via <Claremont5= [email protected]> wrote:
Burnishing has it's place, doesn't remove material, but looks nice, we always used fluid, I suspect that material is "free machining" type and since it is asia is most likely "leadolly"(no longer used much here=epa), if a really nice bearing surface is needed, just rough it around .004 oversize and then run the parts thru a centerless grinder "plunge cutting each one it goes pretty quick
In a message dated 12/10/2023 11:11:14 PM Pacific Standard Time, d.i.williams= [email protected] writes:
?
Dear Mr Animal, May I ask some related questions for the group to ponder? Firstly, ¡ª Thank you very much (Mr Animal) for posting this? - I found it very interesting and the style of the video was both very sharp & polished. (Pun intended) (I looked at the chuck and thought - this looks like a rather large chuck on a 7 x X lathe?.) 1. Seriously, is this an industry standard practice for polishing metals in a lathe? 2. A tongue in cheek question¡¡ As a matter of interest, if you had a similar large tool held in a milling machine and run using very close passes over the surface, would it (sort of) polish a flat piece of work? I realise it would not have quite the same effect as the work is not spinning. But the tool is. (Unless it was on a rotary table and you were turning it very very fast.?) Perhaps run in two passes at 90deg. to each other. Producing a sort of diamond effect? Does anyone have any knowledge? 3. Would you get a sort of similar(?) effect using a small(?) spherical shaped ball bearing held in a holder on a (mini) lathe? Thank you all, in anticipation. All in all, very interesting. Thank you. Just the harden steel ball doing the polishing. David UK. > On 11 Dec 2023, at 04:31, mike allen < animal@...> wrote: > > > > Watched this a few nites back , pretty cool > > animal > > > > > >
?
?
-- Buffalo John
--
Buffalo John
|
way back when, thinking Shell Goria G oil(sp.?), later in a oil field shop on Horz. boring mill I used a reamer appearing item with linear type rollers for 1 1/2" slip pin hole finishes in forgings , just fed it in and back out of drilled holes like a reamer,soluble fluid in that shop, it came in 50 gallon drums, sorry, it's been 50 years ago
In a message dated 12/11/2023 1:09:52 PM Pacific Standard Time, johndurbetaki@... writes:
?
oil
You said you use "fluid" for this. What kind?
?
Mike Taglieri?
On Mon, Dec 11, 2023, 7:38 AM Charles Devore via <Claremont5= [email protected]> wrote:
Burnishing has it's place, doesn't remove material, but looks nice, we always used fluid, I suspect that material is "free machining" type and since it is asia is most likely "leadolly"(no longer used much here=epa), if a really nice bearing surface is needed, just rough it around .004 oversize and then run the parts thru a centerless grinder "plunge cutting each one it goes pretty quick
In a message dated 12/10/2023 11:11:14 PM Pacific Standard Time, d.i.williams= [email protected] writes:
?
Dear Mr Animal, May I ask some related questions for the group to ponder? Firstly, ¡ª Thank you very much (Mr Animal) for posting this? - I found it very interesting and the style of the video was both very sharp & polished. (Pun intended) (I looked at the chuck and thought - this looks like a rather large chuck on a 7 x X lathe?.) 1. Seriously, is this an industry standard practice for polishing metals in a lathe? 2. A tongue in cheek question¡¡ As a matter of interest, if you had a similar large tool held in a milling machine and run using very close passes over the surface, would it (sort of) polish a flat piece of work? I realise it would not have quite the same effect as the work is not spinning. But the tool is. (Unless it was on a rotary table and you were turning it very very fast.?) Perhaps run in two passes at 90deg. to each other. Producing a sort of diamond effect? Does anyone have any knowledge? 3. Would you get a sort of similar(?) effect using a small(?) spherical shaped ball bearing held in a holder on a (mini) lathe? Thank you all, in anticipation. All in all, very interesting. Thank you. Just the harden steel ball doing the polishing. David UK. > On 11 Dec 2023, at 04:31, mike allen < animal@...> wrote: > > > > Watched this a few nites back , pretty cool > > animal > > > > > >
?
?
-- Buffalo John
|
toggle quoted message
Show quoted text
You said you use "fluid" for this. What kind?
Mike Taglieri?
On Mon, Dec 11, 2023, 7:38 AM Charles Devore via <Claremont5= [email protected]> wrote:
Burnishing has it's place, doesn't remove material, but looks nice, we always used fluid, I suspect that material is "free machining" type and since it is asia is most likely "leadolly"(no longer used much here=epa), if a really nice bearing surface is needed, just rough it around .004 oversize and then run the parts thru a centerless grinder "plunge cutting each one it goes pretty quick
In a message dated 12/10/2023 11:11:14 PM Pacific Standard Time, d.i.williams= [email protected] writes:
?
Dear Mr Animal, May I ask some related questions for the group to ponder? Firstly, ¡ª Thank you very much (Mr Animal) for posting this? - I found it very interesting and the style of the video was both very sharp & polished. (Pun intended) (I looked at the chuck and thought - this looks like a rather large chuck on a 7 x X lathe?.) 1. Seriously, is this an industry standard practice for polishing metals in a lathe? 2. A tongue in cheek question¡¡ As a matter of interest, if you had a similar large tool held in a milling machine and run using very close passes over the surface, would it (sort of) polish a flat piece of work? I realise it would not have quite the same effect as the work is not spinning. But the tool is. (Unless it was on a rotary table and you were turning it very very fast.?) Perhaps run in two passes at 90deg. to each other. Producing a sort of diamond effect? Does anyone have any knowledge? 3. Would you get a sort of similar(?) effect using a small(?) spherical shaped ball bearing held in a holder on a (mini) lathe? Thank you all, in anticipation. All in all, very interesting. Thank you. Just the harden steel ball doing the polishing. David UK. > On 11 Dec 2023, at 04:31, mike allen < animal@...> wrote: > > > > Watched this a few nites back , pretty cool > > animal > > > > > >
--
Buffalo John
|
You said you use "fluid" for this. What kind?
Mike Taglieri?
On Mon, Dec 11, 2023, 7:38 AM Charles Devore via <Claremont5= [email protected]> wrote:
Burnishing has it's place, doesn't remove material, but looks nice, we always used fluid, I suspect that material is "free machining" type and since it is asia is most likely "leadolly"(no longer used much here=epa), if a really nice bearing surface is needed, just rough it around .004 oversize and then run the parts thru a centerless grinder "plunge cutting each one it goes pretty quick
In a message dated 12/10/2023 11:11:14 PM Pacific Standard Time, d.i.williams= [email protected] writes:
?
Dear Mr Animal, May I ask some related questions for the group to ponder? Firstly, ¡ª Thank you very much (Mr Animal) for posting this? - I found it very interesting and the style of the video was both very sharp & polished. (Pun intended) (I looked at the chuck and thought - this looks like a rather large chuck on a 7 x X lathe?.) 1. Seriously, is this an industry standard practice for polishing metals in a lathe? 2. A tongue in cheek question¡¡ As a matter of interest, if you had a similar large tool held in a milling machine and run using very close passes over the surface, would it (sort of) polish a flat piece of work? I realise it would not have quite the same effect as the work is not spinning. But the tool is. (Unless it was on a rotary table and you were turning it very very fast.?) Perhaps run in two passes at 90deg. to each other. Producing a sort of diamond effect? Does anyone have any knowledge? 3. Would you get a sort of similar(?) effect using a small(?) spherical shaped ball bearing held in a holder on a (mini) lathe? Thank you all, in anticipation. All in all, very interesting. Thank you. Just the harden steel ball doing the polishing. David UK. > On 11 Dec 2023, at 04:31, mike allen < animal@...> wrote: > > > > Watched this a few nites back , pretty cool > > animal > > > > > >
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based on some of the questions from the last vid . Here's what happens when the ball is made to spin/roll in only one direction .
animal
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It's also pretty expensive , based on last time I wanted to buy
some .
animal
On 12/11/23 7:08 AM, Charles Kinzer
wrote:
toggle quoted message
Show quoted text
Just a minor correction in
case anyone wants to look for it.? It is "Leadloy", not
"Leadolly."? More officially, the alloy is 12L14.
It is a very free machining
steel alloy (as in "try it, you'll like it") and used in
making a lot of automatic screw machine parts.? I don't know
if that is still true today as something else might be being
used now.? I didn't research that aspect.
Yes, it contains lead.? You
should do your own homework, but it has been my understanding
that for regular machining there is no particular hazard.? For
welding, I think there is risk.? And probably also for
grinding.? I look at this like the risk of beryllium.? It is
very hazardous by itself but alloyed with copper
(beryllium-copper) normal machining is safe and many hand
tools are even made of it since it won't produce sparks.? Good
for use around things like thermite or explosives.
Charles E. "Chuck" Kinzer
On Monday, December 11, 2023 at 04:38:49 AM PST, Charles
Devore via groups.io <claremont5@...>
wrote:
Burnishing
has it's place, doesn't remove material, but looks
nice, we always used fluid, I suspect that
material is "free machining" type and since it is
asia is most likely "leadolly"(no longer used much
here=epa), if a really nice bearing surface is
needed, just rough it around .004 oversize and
then run the parts thru a centerless grinder
"plunge cutting each one it goes pretty quick
In a message dated 12/10/2023 11:11:14 PM Pacific
Standard Time, d.i.williams@...
writes:
?
Dear Mr Animal,
May I ask some related questions for the group
to ponder?
Firstly, ¡ª Thank you very much (Mr Animal) for
posting this? - I found it very interesting and
the style of the video was both very sharp &
polished. (Pun intended)
(I looked at the chuck and thought - this looks
like a rather large chuck on a 7 x X lathe?.)
1. Seriously, is this an industry standard
practice for polishing metals in a lathe?
2. A tongue in cheek question¡¡ As a matter of
interest, if you had a similar large tool held
in a milling machine and run using very close
passes over the surface, would it (sort of)
polish a flat piece of work? I realise it would
not have quite the same effect as the work is
not spinning. But the tool is. (Unless it was on
a rotary table and you were turning it very very
fast.?) Perhaps run in two passes at 90deg. to
each other. Producing a sort of diamond effect?
Does anyone have any knowledge?
3. Would you get a sort of similar(?) effect
using a small(?) spherical shaped ball bearing
held in a holder on a (mini) lathe?
Thank you all, in anticipation.
All in all, very interesting. Thank you. Just
the harden steel ball doing the polishing.
David UK.
> On 11 Dec 2023, at 04:31, mike allen < animal@...>
wrote:
>
>
>
> Watched this a few nites back , pretty cool
>
> animal
>
>
>
>
>
>
|
Re: $1000 Budget: Which 7 x 14 to buy?
How is the hunting going?
Dave
FYI?
I just got a mini lathe in November for under $600.00 metric/inch . Had to purchase steady rest $75? and 4 jaw $75 and back plate $38.? Note buy good tool post too
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davesmith1800
BuffaloJohn