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Re: DB/SL optimum power?

 

Cutting a key slot into the Unimat's relatively thin spindle wall
strikes me as a bad idea. Besides, with round belts the belt will slip
in the pulley before the pulley slips on the spindle.
My 2?,
Elliot


On 5/3/23 4:10 PM, rcjge wrote:
Hi Folks.

think I’m gonna repower my DB200 with a new motor
thinking brushless, dc, 12-24V pondering wattage. 150w sounds good.

two much power creates problems as does too little.
was also thinking of keying the spindle to the pulley for more positive
drive.

thoughts people?
--
Elliot Nesterman
elliot@...
www.ajoure.net

"The finest jewel cannot disguise a flawed character."
DB/SL optimum power?

 

Hi Folks.

think I’m gonna repower my DB200 with a new motor
thinking brushless, dc, 12-24V pondering wattage. 150w sounds good.?

two much power creates problems as does too little.
was also thinking of keying the spindle to the pulley for more positive drive.

thoughts people??

?
Re: Unimat DB/SL cross slide disassembly…

 

Since I have an ultrasonic cleaning tank, I would clean it that way...

Harbor Fright sells the one I have

-Guy-

On May 2, 2023 at 9:20 PM Elliot Nesterman <elliot@...> wrote:

Test tube cleaning brushes. They come in several diameters. After a good
soak in a degreaser these should clear out any leftover swarf.

Elliot

On 5/2/23 9:12 PM, rcjge wrote:
Hey there

has anyone broken down their cross slide on a DB/SL lathe.
I mean the saddle that slides across the “y” axis and the threaded drive
rod out?
if so, how did you clean the part through which the thread screw passes?

I had a pipe cleaner like brass brush in mind….?

any suggestions?


Jeff
Ont/Cdn
--
Elliot Nesterman
elliot@...
www.ajoure.net

"The finest jewel cannot disguise a flawed character."


?
Re: Projects Built on the Unimat?

 

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Just fantastic work. ?Beautiful to just look at. ?I had to make a similar dovetail for a tool holder I needed for my Maximat but I used a shaper that I own. ?Don’t see those around shops much any more.

On May 3, 2023, at 8:58 AM, OldToolmaker via groups.io <old_toolmaker@...> wrote:

Tom, the outside surfaces were surface ground square prior to cutting the dovetails to facilitate accuracy of the finished tool. The dovetail cutter itself was turned in the Unimat and finish ground using my Quorn cutter grinder.
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: Projects Built on the Unimat?

 

Tom, the outside surfaces were surface ground square prior to cutting the dovetails to facilitate accuracy of the finished tool. The dovetail cutter itself was turned in the Unimat and finish ground using my Quorn cutter grinder.
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: Projects Built on the Unimat?

 

Paul,
I enjoyed looking at your website! Very interesting!
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: Projects Built on the Unimat?

 

Mike,
What are those white gears seen in the background of your picture used for? Just curious!
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: Projects Built on the Unimat?

 

Carl,
Nice way to solve a problem!
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: Unimat watchmakers drawbar

 

On Wed, May 3, 2023 at 12:02 AM, Tool247 wrote:
Yes. I realized that I inverted my math. I realized that .275-40 is approx M7-.625?
More precisely M7 × 0.635
Re: Projects Built on the Unimat?

 

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Kudos! ?Really brilliant work. ?Great craftsmanship and ,artery of the tool. ?I am in awe.
Tom A

On May 2, 2023, at 10:28 PM, OldToolmaker via groups.io <old_toolmaker@...> wrote:

I used the Unimat to build a Quick Change tool post for it.?/g/Unimat/photo/195708/2246513?p=Created%2C%2C%2C20%2C2%2C0%2C0

--
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: Projects Built on the Unimat?

 

I used the Unimat to build a Quick Change tool post for it.?/g/Unimat/photo/195708/2246513?p=Created%2C%2C%2C20%2C2%2C0%2C0

--
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: Projects Built on the Unimat?

 

Nice job, Carl!

--
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: Unimat DB/SL cross slide disassembly…

 

Find a 5/16" or 8mm bottle brush. Nylon bristles will be easier on the alloy parts. If you're in the US, you can find this set at Harbor Freight,??and the 5/16" brush is about perfect. A bit of rubbing alcohol or a shot of WD-40 or similar will get any gunk out of the threads.?

If you have one of the iron-framed tools, a .32 caliber gun cleaning brush would work well, but I'd not use it on the alloy parts.?

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 Tuesday, May 2, 2023 at 08:12:05 PM CDT, rcjge <jgpedwards@...> wrote:


Hey there

has anyone broken down their cross slide on a DB/SL lathe.
I mean the saddle that slides across the “y” axis and the threaded drive rod out?
if so, how did you clean the part through which the thread screw passes??

I had a pipe cleaner like brass brush in mind….?

any suggestions??


Jeff
Ont/Cdn
Re: Unimat DB/SL cross slide disassembly…

 

Test tube cleaning brushes. They come in several diameters. After a good
soak in a degreaser these should clear out any leftover swarf.

Elliot


On 5/2/23 9:12 PM, rcjge wrote:
Hey there

has anyone broken down their cross slide on a DB/SL lathe.
I mean the saddle that slides across the “y” axis and the threaded drive
rod out?
if so, how did you clean the part through which the thread screw passes?

I had a pipe cleaner like brass brush in mind….?

any suggestions?


Jeff
Ont/Cdn
--
Elliot Nesterman
elliot@...
www.ajoure.net

"The finest jewel cannot disguise a flawed character."
Unimat DB/SL cross slide disassembly…

 

Hey there

has anyone broken down their cross slide on a DB/SL lathe.
I mean the saddle that slides across the “y” axis and the threaded drive rod out?
if so, how did you clean the part through which the thread screw passes??

I had a pipe cleaner like brass brush in mind….?

any suggestions??


Jeff
Ont/Cdn
Re: Added album Emco Unimat models side by side #photo-notice

 

Also added photo's of 3 different milling collumns.
Even the bottems are different in shape.
4 photo's from the MK1 - MK2 - MK3/4 - and a Zamak bottem.
Re: Unimat watchmakers drawbar

 

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Yes. I realized that I inverted my math. I realized that .275-40 is approx M7-.625?


On May 2, 2023, at 5:36 PM, McKee, Don {Quaker} <donmckee@...> wrote:

?Wouldn't a .275-40 thread be more like a metric M7-0.6 thread?? It's my understanding that while Imperial threads are listed listed as threads per inch, metric threads give the diameter and the pitch distance between threads.? An M7-1.0 thread's Imperial equivalent would have 25.4 threads per inch wouldn't it?

Re: Unimat watchmakers drawbar

 

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My? Sherline lathe works with metric collets as long as I use the metric sized collet sleeve, but the Sherline collets will not thread onto my Boley drawbar.? The threads are a bit larger in diameter than the metric ones.

Charles Daldry

On 5/2/23 12:55, Ruben wrote:

Collets are on the way.
For me it is not clear how long the Sherline drawbar is.
Also the thread is not metric like the collets I bought.

Re: Unimat watchmakers drawbar

 

Yes to your last question, anyway. :) 1mm pitch is 25.4tpi. I'd have to dig out a copy of Machinery's Handbook or other reference to calculate 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 Tuesday, May 2, 2023 at 04:36:47 PM CDT, McKee, Don {Quaker} <donmckee@...> wrote:


Wouldn't a .275-40 thread be more like a metric M7-0.6 thread?? It's my understanding that while Imperial threads are listed listed as threads per inch, metric threads give the diameter and the pitch distance between threads.? An M7-1.0 thread's Imperial equivalent would have 25.4 threads per inch wouldn't it?

Re: Unimat watchmakers drawbar

 

Hello James,

Very helpfull!
I'm going to make my own, so this helps.
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