Problem : Shars Tool Holder do not Fit Shars Tool Post

:) AND the Winner, by split decision, goes to GeneT45 and RaisedByWolve.

Last night I recalled someone reporting the threaded drum has a 4 start thread. I had notice the locking
arm was interfering with one of the tool holder positions. I shifted the drum by one thread and tool holder
insertion improved a lot. Now the locking arm was still over one holder when in locked position, so I skipped
one more thread. Now checking the holder, all tool holders go on, LOCK, UNLOCK (Uh, sort of) and come off.

So, this now exposes another issue, one I couldn't notice before. Insert tool holder. Good. Lock position, good.
Now to unlock, Sometimes the arm motion is smooth, other times it hits a hard spot half way open, I can
push HARD and get through it, but why ?

I hope this tread could be useful for somebody down the road. All I did was open it up to inspect.
NO DIRECTIONS ON HOW TO PUT IT BACK TOGETHER. WHAT COULD GO WRONG !!!

I will follow up on Shars response.

Thanks, Stan
 
BrassCat said:
:) AND the Winner, by split decision, goes to GeneT45 and RaisedByWolve.

Last night I recalled someone reporting the threaded drum has a 4 start thread. I had notice the locking
arm was interfering with one of the tool holder positions. I shifted the drum by one thread and tool holder
insertion improved a lot. Now the locking arm was still over one holder when in locked position, so I skipped
one more thread. Now checking the holder, all tool holders go on, LOCK, UNLOCK (Uh, sort of) and come off.

So, this now exposes another issue, one I couldn't notice before. Insert tool holder. Good. Lock position, good.
Now to unlock, Sometimes the arm motion is smooth, other times it hits a hard spot half way open, I can
push HARD and get through it, but why ?

I hope this tread could be useful for somebody down the road. All I did was open it up to inspect.
NO DIRECTIONS ON HOW TO PUT IT BACK TOGETHER. WHAT COULD GO WRONG !!!

I will follow up on Shars response.

Thanks, Stan
Click to expand...
They lock in and stick like a locking taper in a tail stock.

I hereby challenge GeneT45 to deaf match to declare ownership of your metalworking soul.

It’s going to be a toss up who wins, but I’m pretty deaf.
 
GeneT45 said:
That looks to me like the wedges are installed "low". When the post is open/loose the wedge should stick up above the top of the toolpost. When it's closed/locked it should be pretty close to flush with the top surface. At least that's how it goes on every wedge-style I've used. Can they be adjusted "upwards"?

GsT
Click to expand...
I would agree. Here's a link to a video of a guy installing an OXA tool post on a mini lathe. Note at about the 6:27 mark he cycles the handle. The wedges are about 1/4" above the top of the tool post when in the released position, and level with the top in the closed position.

 
When I tried that, the cutter holders just fell through. Lol. I got a very god deal. Lmao!
 
I appreciate all the support and comment. Here are resolved problem photos. Yes, the lock sliders
now go up higher? But why ? If the elevating cylinder is on center, when I shifted the lock sliders over
by 2 thread starts, it should have had the same problem. Are they eccentric ? It shift did change the lock arm
position 90 deg. for each of the shift. Anyway, here are the pics.

show high pos.jpg

shars holder inserted.jpg
 
BrassCat said:
I appreciate all the support and comment. Here are resolved problem photos. Yes, the lock sliders
now go up higher? But why ? If the elevating cylinder is on center, when I shifted the lock sliders over
by 2 thread starts, it should have had the same problem. Are they eccentric ? It shift did change the lock arm
position 90 deg. for each of the shift. Anyway, here are the pics.

View attachment 516513

View attachment 516515
Click to expand...


Not eccentric, they are on a taper which pushes them down and out when the lever moves.

The way they look in these pics is correct.
 
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