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Re: 290 Tooth Gear
For $28+shipping, you can get the book they made with all Ted Hansen's 7x12 mini-lathe projects. Chapters 17, 18, and 19 are the complete dividing apparatus. You might as well get the whole book, as much of the rest of the material in the book is directly applicable to most any small lathe, and what isn't will still be adaptable... I was struck by his adaptation to turn a mini-lathe into a horizontal milling machine. I've had the book for a few years. Hadn't seen that until today. Same website as the magazines. 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! 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, March 13, 2023 at 10:13:08 PM CDT, Jeff R. Allen <jra@...> wrote:
Found it! Additions and Modifications to the Mini-Lathe: A Worm Drive for the Indexing Head Ted Hansen Lathes HSM Vol. 34 No. 3 May-Jun 2015 46 Back issue for sale here: Jeff On Tue, Mar 14, 2023, 02:18 OldToolmaker via <old_toolmaker=[email protected]> wrote: Unfortunately, do to a cross country move, I no longer have those publications. |
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Re: brazing broken teeth of 3-jaw chuck
Silver solder would be a good choice, particularly if he had the correct hard, medium & easy solders, but he already has a brazing rod that should work if he can get his parts hot enough, and keep them that way long enough to get the broken teeth in place just right. Good thing about brazing, if you flub it up, you can try again. This I know from personal experience. :) 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! 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 Tuesday, March 14, 2023 at 05:12:48 PM CDT, Jkle379184 via groups.io <jkle379184@...> wrote:
?You could try silver soldering it back on.?
?Jeff -----Original Message-----
From: Bill in OKC too via groups.io <wmrmeyers@...> To: [email protected] <[email protected]> Sent: Tue, Mar 14, 2023 3:53 pm Subject: Re: [Unimat] brazing broken teeth of 3-jaw chuck Brazing should hold up, but you're going to have to get the broken teeth in exactly the right place for each of the three teeth. Do you have enough fire brick or something similar to make a brazing hearth? Something like this:?
Doesn't have to be as fancy as she's trying, but it will give you a space to get your parts up to heat, and hold the jaw while you hold the broken teeth in place. Back when I was a younger man, I used pieces of wood that were well charred to do the same thing for jewelry work. you could pin the parts in place, then use a probe to hold small parts. Something like these:??Not that you'd have to buy them. You can make your own rather easily. Basically, you pin the part you're brazing to in place so it cannot move, heat it until the flux melts and coats the joint area, flux the part that is getting brazed in as well. Put a bit of the brazing rod on the spot where it needs to go, and melt off a bit of the casting rod. It should coat the area. Put the part to be brazed back in place, and use the pick to press it into place. If there is too much brazing material, it should be displaced when you press down on the bit you're brazing back in place.?
Good luck!
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!
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 Tuesday, March 14, 2023 at 02:03:12 PM CDT, niczano@... <niczano@...> wrote:
Hello,
?
I wanted to ask your advice.
?
Unfortunately, the 3-jaw chuck slipped out of my hands and fell to the ground. From the hit to the jaw n. 3 broke 3 teeth.
?
Luckily I had another original 3-jaw chuck but I would still like to recover this broken one too.
?
Initially the idea was to make a small hole (0.5mm) on each tooth to insert a small harmonic steel wire to be inserted into an adjacent hole directly on the jaw. This is to have a support for brazing with castolin 8103.
?
Unfortunately I was unable to drill the steel of the tooth. At this point the idea is to braze directly by inventing a way to keep the teeth in position while I heat the piece.
?
Have any of you ever experienced something like this. Do you think brazing can hold up?
?
Thank you
|
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Re: Rustoleum Green Hammered
I had the Sherwin Williams Industrial paint store mix up some hammer finish paint using a Unimat part for their color comparison. ?The outcome is extremely close to the original color. ?I've used both an air finish sprayer (Harbor Freight) and my air brush. ?Good results from both.
Keep your fingers out of the works,... -- Steve Jaynes Unimat owner/collector since 1995, all generations. |
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Re: brazing broken teeth of 3-jaw chuck
?You could try silver soldering it back on.?
?Jeff -----Original Message-----
From: Bill in OKC too via groups.io <wmrmeyers@...> To: [email protected] <[email protected]> Sent: Tue, Mar 14, 2023 3:53 pm Subject: Re: [Unimat] brazing broken teeth of 3-jaw chuck Brazing should hold up, but you're going to have to get the broken teeth in exactly the right place for each of the three teeth. Do you have enough fire brick or something similar to make a brazing hearth? Something like this:?
Doesn't have to be as fancy as she's trying, but it will give you a space to get your parts up to heat, and hold the jaw while you hold the broken teeth in place. Back when I was a younger man, I used pieces of wood that were well charred to do the same thing for jewelry work. you could pin the parts in place, then use a probe to hold small parts. Something like these:??Not that you'd have to buy them. You can make your own rather easily. Basically, you pin the part you're brazing to in place so it cannot move, heat it until the flux melts and coats the joint area, flux the part that is getting brazed in as well. Put a bit of the brazing rod on the spot where it needs to go, and melt off a bit of the casting rod. It should coat the area. Put the part to be brazed back in place, and use the pick to press it into place. If there is too much brazing material, it should be displaced when you press down on the bit you're brazing back in place.?
Good luck!
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!
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 Tuesday, March 14, 2023 at 02:03:12 PM CDT, niczano@... <niczano@...> wrote:
Hello,
?
I wanted to ask your advice.
?
Unfortunately, the 3-jaw chuck slipped out of my hands and fell to the ground. From the hit to the jaw n. 3 broke 3 teeth.
?
Luckily I had another original 3-jaw chuck but I would still like to recover this broken one too.
?
Initially the idea was to make a small hole (0.5mm) on each tooth to insert a small harmonic steel wire to be inserted into an adjacent hole directly on the jaw. This is to have a support for brazing with castolin 8103.
?
Unfortunately I was unable to drill the steel of the tooth. At this point the idea is to braze directly by inventing a way to keep the teeth in position while I heat the piece.
?
Have any of you ever experienced something like this. Do you think brazing can hold up?
?
Thank you
|
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Re: brazing broken teeth of 3-jaw chuck
¿ªÔÆÌåÓýHi, ? I did the same thing, dropped the chuck and broke a tooth on a jaw. After months of searching I found a seller on eBay that had individual jaws. The seller is . I was able to buy one jaw, but I don¡¯t know what they have now. Try his online store. ? Pete Vernaci ? Sent from for Windows ? From: niczano@...
Sent: Tuesday, March 14, 2023 12:03 PM To: [email protected] Subject: [Unimat] brazing broken teeth of 3-jaw chuck ? Hello, ? I wanted to ask your advice. ? Unfortunately, the 3-jaw chuck slipped out of my hands and fell to the ground. From the hit to the jaw n. 3 broke 3 teeth. ? Luckily I had another original 3-jaw chuck but I would still like to recover this broken one too. ? Initially the idea was to make a small hole (0.5mm) on each tooth to insert a small harmonic steel wire to be inserted into an adjacent hole directly on the jaw. This is to have a support for brazing with castolin 8103. ? Unfortunately I was unable to drill the steel of the tooth. At this point the idea is to braze directly by inventing a way to keep the teeth in position while I heat the piece. ? Have any of you ever experienced something like this. Do you think brazing can hold up? ? Thank you ? |
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Re: SL modifications
That is really a clean system. Well done! JohnOn Tue, Mar 14, 2023 at 3:45?PM David via <andreadee=[email protected]> wrote: Good evening, |
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Re: Unimat Mill/Drill Mounting System ?
Workbench is too filled for me to make a pretty picture.? Here is a Uni3 with the milling column bolted on, mounted on a veneer particle board base.? Next to it is one of the green Chinese milling tables.? So when head is turned that way, the whole lathe is used as a milling stand.?
If you want a completely separate installation, search around the Misumi US site.? They sell 4 hole flanged bushings in various metric IDs.? One of these can be screwed down to a base for a vertical column. |
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Re: Rustoleum Green Hammered
¿ªÔÆÌåÓýTrue, but the webpage contains the option "avvisami quando disponibile", i.e. "let me know when it's available again" ... Verzonden vanaf mijn Galaxy -------- Oorspronkelijk bericht -------- Van: Alan Ehrlich <alan.ehrlich@...> Datum: 13-03-2023 16:42 (GMT+01:00) Aan: [email protected], niczano@... Onderwerp: Re: [Unimat] Rustoleum Green Hammered Thank you, looks great. But unfortunately it appears to be out-of-stock presently unavailable. ? Kind regards, AlN ? From: [email protected] <[email protected]> On Behalf Of niczano@...
Sent: Monday, March 13, 2023 1:33 PM To: Quinn Golden <quinngolden@...>; [email protected] Subject: Re: [Unimat] Rustoleum Green Hammered ?
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Re: Unimat Mill/Drill Mounting System ?
¿ªÔÆÌåÓýThe drill/mill attachment for the Unimat 3 is attached directly to the bed of the lathe at the back side. The attachment is made through a V-notch that is integrally part of the bed. The drill stand is attached with 2 allen bolts and for all I know this ensures proper alignment. However, in ensuing models, the drill attachment required more bolts. Since the Unimat 3 attachment is part of the bed, it can not be taken away and attached to anither machine. There also existsed a "drill stand bridging attachment" that could be fixed to the cross slide by attaching it there through 2 allen bilts and T-nuts. The drill stand could then be attached upright in this bridging attachment by using the heavy central T-nut. I dont have that bridging attachment but I doubt whether that would provide the same rigidty as the normal attachment described above. Hope this helps somewhat. Verzonden vanaf mijn Galaxy -------- Oorspronkelijk bericht -------- Van: "clankennedy2004 via groups.io" <clankennedy2004@...> Datum: 13-03-2023 18:25 (GMT+01:00) Aan: [email protected] Onderwerp: [Unimat] Unimat Mill/Drill Mounting System ? |
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Re: brazing broken teeth of 3-jaw chuck
I would disagree. Brazed joints are nearly as strong as the base metal, and these teeth don't see a great deal of force applied.? Getting them in the right place and such is more problematic, but it's not impossible. Jewelers use different grades (melting temperatures) while silver soldering, which is essentially brazing with silver brazing rods. it's been close to 50 years since I've done such things, but it is doable. Well, maybe not with the shaky hands I have now...? But still worth a try.? 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! 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 Tuesday, March 14, 2023 at 02:07:20 PM CDT, clankennedy2004 via groups.io <clankennedy2004@...> wrote:
UNSAFE TO DO SO. BIN IT !
On Tuesday, 14 March 2023 at 19:03:12 GMT, niczano@... <niczano@...> wrote:
Hello,
?
I wanted to ask your advice.
?
Unfortunately, the 3-jaw chuck slipped out of my hands and fell to the ground. From the hit to the jaw n. 3 broke 3 teeth.
?
Luckily I had another original 3-jaw chuck but I would still like to recover this broken one too.
?
Initially the idea was to make a small hole (0.5mm) on each tooth to insert a small harmonic steel wire to be inserted into an adjacent hole directly on the jaw. This is to have a support for brazing with castolin 8103.
?
Unfortunately I was unable to drill the steel of the tooth. At this point the idea is to braze directly by inventing a way to keep the teeth in position while I heat the piece.
?
Have any of you ever experienced something like this. Do you think brazing can hold up?
?
Thank you
|
|
Re: brazing broken teeth of 3-jaw chuck
Brazing should hold up, but you're going to have to get the broken teeth in exactly the right place for each of the three teeth. Do you have enough fire brick or something similar to make a brazing hearth? Something like this:? Doesn't have to be as fancy as she's trying, but it will give you a space to get your parts up to heat, and hold the jaw while you hold the broken teeth in place. Back when I was a younger man, I used pieces of wood that were well charred to do the same thing for jewelry work. you could pin the parts in place, then use a probe to hold small parts. Something like these:??Not that you'd have to buy them. You can make your own rather easily. Basically, you pin the part you're brazing to in place so it cannot move, heat it until the flux melts and coats the joint area, flux the part that is getting brazed in as well. Put a bit of the brazing rod on the spot where it needs to go, and melt off a bit of the casting rod. It should coat the area. Put the part to be brazed back in place, and use the pick to press it into place. If there is too much brazing material, it should be displaced when you press down on the bit you're brazing back in place.? Good luck! 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! 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 Tuesday, March 14, 2023 at 02:03:12 PM CDT, niczano@... <niczano@...> wrote:
Hello,
?
I wanted to ask your advice.
?
Unfortunately, the 3-jaw chuck slipped out of my hands and fell to the ground. From the hit to the jaw n. 3 broke 3 teeth.
?
Luckily I had another original 3-jaw chuck but I would still like to recover this broken one too.
?
Initially the idea was to make a small hole (0.5mm) on each tooth to insert a small harmonic steel wire to be inserted into an adjacent hole directly on the jaw. This is to have a support for brazing with castolin 8103.
?
Unfortunately I was unable to drill the steel of the tooth. At this point the idea is to braze directly by inventing a way to keep the teeth in position while I heat the piece.
?
Have any of you ever experienced something like this. Do you think brazing can hold up?
?
Thank you
|
|
Re: SL modifications
Good evening,
Finally found time to commission the long travel stepper motor drive on my SL. The controller fitted has several useful functions other than just backwards and forwards but I'm having trouble with the auto-translated instructions. Also tidied up the 4-way lighting set-up. regards. David |
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Re: brazing broken teeth of 3-jaw chuck
UNSAFE TO DO SO. BIN IT !
On Tuesday, 14 March 2023 at 19:03:12 GMT, niczano@... <niczano@...> wrote:
Hello,
?
I wanted to ask your advice.
?
Unfortunately, the 3-jaw chuck slipped out of my hands and fell to the ground. From the hit to the jaw n. 3 broke 3 teeth.
?
Luckily I had another original 3-jaw chuck but I would still like to recover this broken one too.
?
Initially the idea was to make a small hole (0.5mm) on each tooth to insert a small harmonic steel wire to be inserted into an adjacent hole directly on the jaw. This is to have a support for brazing with castolin 8103.
?
Unfortunately I was unable to drill the steel of the tooth. At this point the idea is to braze directly by inventing a way to keep the teeth in position while I heat the piece.
?
Have any of you ever experienced something like this. Do you think brazing can hold up?
?
Thank you
|
|
brazing broken teeth of 3-jaw chuck
Hello,
?
I wanted to ask your advice.
?
Unfortunately, the 3-jaw chuck slipped out of my hands and fell to the ground. From the hit to the jaw n. 3 broke 3 teeth.
?
Luckily I had another original 3-jaw chuck but I would still like to recover this broken one too.
?
Initially the idea was to make a small hole (0.5mm) on each tooth to insert a small harmonic steel wire to be inserted into an adjacent hole directly on the jaw. This is to have a support for brazing with castolin 8103.
?
Unfortunately I was unable to drill the steel of the tooth. At this point the idea is to braze directly by inventing a way to keep the teeth in position while I heat the piece.
?
Have any of you ever experienced something like this. Do you think brazing can hold up?
?
Thank you
|
Bill in OKC too
OldToolmaker
Steve Jaynes
Herman de Leeuw