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Re: Tool Post Grinder
Got it a bit ago, did some measurements with my HF 12" digital caliper, numbers aren't exactly right, but based on sizes and fairly close dimensions, it's a J-3, spindle says 35000rpm, designed for 9-13" lathes. So I scored pretty good.?
Fred, I could use the metal box, a set of pulleys, #190 & #721, and they are supposed to come with 1" & 2" wheel collar. Could use those also. I am sure I could make my own, but that thing can spin pretty darned quick, so I'd prefer factory accessories if I can get them. Also the the user manual.? Not seeing any of these things for sale new, but the closest thing they've got, MSC Direct wants a bit over $5k for a new J-35. Suspect I'll be using vacuum cleaner belts, since they want over $70 for the correct belt, too.? wmrmeyers (at) sbcglobal (dot) net if you want to email me about what you have and what you need to get for it.? Bill in OKC |
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Re: Tool Post Grinder
I found their website Sunday, and downloaded a number of their parts lists with diagrams. Is where I found out the sizes of the spindle nuts. Also one that shows the dimensions of the various machines. Figure it should be pretty simple to find out what I have. Preliminarily, from the photos, I'm thinking J-35 or lower... Of course, I could be an idiot, and have goofed up badly...? In which case, I'll repair what I can, and put it back put it back up for sale, and get a different one.? 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, July 25, 2023 at 11:04:50 AM CDT, Tom S <tomlstallings@...> wrote:
Themac LLC
117 Patterson St
Hillsdale, NJ 07642
(201) 438-2313
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Re: Tool Post Grinder
I don't know what version it is now, but I'm hoping, based on apparent sizes of the spindle nuts and such that it's one of their smaller, J-2 or J-3 machines. Those are sized for 9-12" lathes. It doesn't have the data plate, so there's no info available until I lay hands on it. Should be here Friday, according to the post awfule. ;) I have a gadget that will tell me how much power it draws, another to measure the motor RPM, and calipers will measure the spindle nuts, and some other dimensions, and those will help me figure out what it is.? 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, July 24, 2023 at 10:54:29 AM CDT, Jon Elson <elson@...> wrote:
On 7/23/23 15:13, Bill in OKC too via groups.io wrote: I got a TheMac J4 tool post grinder many years ago.? I put it on a 12" Craftsman, and it was really a bit too large for that lathe.? Now, I have a 15" Sheldon, and it is just the right size. But, I think this may be a bit too big for a 10" Atlas, unless yours is a smaller version than mine. Jon |
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Re: Tool Post Grinder
What I get is in the first two photos I posted. I will be needing all but 2 pullieys,? belt guards, and internal grinding adapters, plus some grinding wheels. Some put a 6" grinding wheel on it, and the manufacturer says maximum 3" wheels. I can make the stuff I need, but it would sure be easier and faster to buy. Once I have it in hand, I'll let you know what I'm missing so you can tell me what you have, and what you want for it. Just got the shipping info, should be here Friday.? You wouldn't happen to have a bench top surface grinder in your stash, would you? Saw one on eBay that I could probably shoehorn into my mess, but they were pick up only, in the North East somewhere. Wife is sick enough I can't leave her even overnight. 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, July 24, 2023 at 06:15:38 AM CDT, fred eisner <imsteamer21@...> wrote:
hi bill
i have a lot of spare parts for the themac grinders
let me know what you need
off hand you need a few different pullies to adjust the speed for different size wheels
also you need the mount to mount it to the lathe
i also might have the steel box for it
i might have the manual also
thanks fred
imsteamer21@...
914 720 5523
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Re: Tool Post Grinder
Low end, the spindle nuts are 3/8"-24tpi left or right hand thread, high end 3/4"-24tpi for a J-7 Themac. I'm guessing they're 3/8" nuts, and the screws that hold the spindle on are 5/16"-18, which would put it down in the smaller sizes I'm hoping for. As long as I've not underestimating things... ;) Bill in OKC William R. Meyers, MSgt, USAF(Ret.) Aphorisms to live by: Good judgement comes from experience. Experience comes from bad judgement. spindle? 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 Sunday, July 23, 2023 at 03:54:42 PM CDT, mike allen <animal@...> wrote:
It's kinda hard to get any scale from the pics , but that motor
looks to be 1/2 the size of the motor on my Atlas TPG? . If that's
so that's a real nice feature . animal On 7/23/23 1:18 PM, Bill in OKC too via
groups.io wrote:
Plan on it, later in the
day. ;) Or may wait until I actually get it, take some
measurements, and then I'll have a lot more info to work
from to identify which one I have. They have a couple of
models that are obsolete. It might be one of them. They have
a couple of models that are sized for 9-12 or 13" machines.
Could be one of them. When I have an idea how fast the motor
spins, and how much current it draws, that may be of some
use, as well. Waiting is going to be difficult. I'm gonna
have to put on my big boy pants. ;)
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 Sunday, July 23, 2023 at 02:55:43 PM CDT, mike allen
<animal@...> wrote:
??? ??? I'd do some askin over here ??? ??? animal On
7/23/23 10:51 AM, Bill in OKC too via groups.io wrote:
Woke up earlier this morning than I intended to, but
not bad for how my gut has been feeling the last few
days. Looked at the tool post grinder I've been watching
on ebay for a few days, and saw the price had dropped
from $224 to $201, with $15 shipping, and 48 minutes to
go... In a moment of madness, I bought it. It's a
Themac, with no labels or plates, so no idea which
model. Cheapest one new is around a couple of grand, and
it supposedly runs, but needs a new cord. Be interesting
to figure out which model it is. Downloaded the drawings
and such from the manufacturer website, has dimensions
that should help me narrow it down. Hopefully it won't
be too big to use on my 10" lathes. Also wonder if I
could improvise a mount to use it for surface grinding
small parts like 1-2-3 blocks and the like... Haven't
even got it yet and trying to figure out how to stretch
the capabilities. ;)
Just a note, the seller has quite a bit of stuff for Atlas Craftsman lathes and other interesting stuff...? Also bought a Morse 1-1/2" die holder and a more or less matching tap holder fro the same seller. Prices are not excruciatinglly high..?? I'll let y'all know how well packed and how quickly shipped and such once I know more, but a lot of their stuff seems to be about 10% off right now.? Bill in OKC Bill in OKC |
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Re: Tool Post Grinder
Plan on it, later in the day. ;) Or may wait until I actually get it, take some measurements, and then I'll have a lot more info to work from to identify which one I have. They have a couple of models that are obsolete. It might be one of them. They have a couple of models that are sized for 9-12 or 13" machines. Could be one of them. When I have an idea how fast the motor spins, and how much current it draws, that may be of some use, as well. Waiting is going to be difficult. I'm gonna have to put on my big boy pants. ;) 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 Sunday, July 23, 2023 at 02:55:43 PM CDT, mike allen <animal@...> wrote:
??? ??? I'd do some askin over here ??? ??? animal On 7/23/23 10:51 AM, Bill in OKC too
via groups.io wrote:
Woke up earlier this morning than I intended to, but not bad for
how my gut has been feeling the last few days. Looked at the tool
post grinder I've been watching on ebay for a few days, and saw
the price had dropped from $224 to $201, with $15 shipping, and 48
minutes to go... In a moment of madness, I bought it. It's a
Themac, with no labels or plates, so no idea which model. Cheapest
one new is around a couple of grand, and it supposedly runs, but
needs a new cord. Be interesting to figure out which model it is.
Downloaded the drawings and such from the manufacturer website,
has dimensions that should help me narrow it down. Hopefully it
won't be too big to use on my 10" lathes. Also wonder if I could
improvise a mount to use it for surface grinding small parts like
1-2-3 blocks and the like... Haven't even got it yet and trying to
figure out how to stretch the capabilities. ;) Just a note, the seller has quite a bit of stuff for Atlas Craftsman lathes and other interesting stuff...? Also bought a Morse 1-1/2" die holder and a more or less matching tap holder fro the same seller. Prices are not excruciatinglly high..?? I'll let y'all know how well packed and how quickly shipped and such once I know more, but a lot of their stuff seems to be about 10% off right now.? Bill in OKC Bill in OKC |
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Re: Tool Post Grinder
Has T-nut setup. Will need some work to get it the correct size of T-nut, of course. I'll have to see what size fastener they used, and make a T-nut to fit that, as the T-nut on my machine matches the 9/16th-18 thread for my AXA-clone tool post. Attached is a photo of the existing mounting on the grinder.? 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 Sunday, July 23, 2023 at 01:47:44 PM CDT, perry7122 <perry7122@...> wrote:
how does it mount on the Atlas 10"?
On Sunday, July 23, 2023 at 01:51:13 PM EDT, Bill in OKC too via groups.io <wmrmeyers@...> wrote:
Woke up earlier this morning than I intended to, but not bad for how my gut has been feeling the last few days. Looked at the tool post grinder I've been watching on ebay for a few days, and saw the price had dropped from $224 to $201, with $15 shipping, and 48 minutes to go... In a moment of madness, I bought it. It's a Themac, with no labels or plates, so no idea which model. Cheapest one new is around a couple of grand, and it supposedly runs, but needs a new cord. Be interesting to figure out which model it is. Downloaded the drawings and such from the manufacturer website, has dimensions that should help me narrow it down. Hopefully it won't be too big to use on my 10" lathes. Also wonder if I could improvise a mount to use it for surface grinding small parts like 1-2-3 blocks and the like... Haven't even got it yet and trying to figure out how to stretch the capabilities. ;) Just a note, the seller has quite a bit of stuff for Atlas Craftsman lathes and other interesting stuff...? Also bought a Morse 1-1/2" die holder and a more or less matching tap holder fro the same seller. Prices are not excruciatinglly high..?? I'll let y'all know how well packed and how quickly shipped and such once I know more, but a lot of their stuff seems to be about 10% off right now.? Bill in OKC Bill in OKC |
Bill in OKC too