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Bored today, so I got the idea to make an angle index for my AXA toolpost.
- Thread starter Ken226
- Start date
- Joined
- Jan 6, 2017
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- 1,248
The tab is a really good fit. The issue is as @francist mentioned earlier. The thickness of the washer is barely more that the thread pitch of the stud, so it's only contacting about 1 and a half threads on the back side.
The best fix would be a washer/pointer that's at least 3 or 4 times the thread pitch. But, then, the toolpost nut would only have a couple threads of engagement.
I made this stud a long time ago, from a piece of an old .223 barrel.
I'll probably make a longer stud at some point, purpose made for this application. When I do that, I'll leave an unthreaded portion that goes up high enough for a good, engagement with the pointer, and use a setscrew so there's zero movement.
- Joined
- Jan 6, 2017
- Messages
- 1,248
A spring loaded diamond drag tool in a small CNC mill. I switched off the spindle and just let the machine drag the point around.
For really flat or cylindrical machined surfaces ant I can keep consistent enough in shape to easily model in CAD, I use a .028" ball mill, but stuff that's thin and hard to keep flat or hard to model the contours, get the diamond drag.
Last edited:
- Joined
- Jan 6, 2017
- Messages
- 1,248
Just wanted to post an update on this project.
I made a new toolpost stud, with a shoulder that sits about .04" higher than the index ring. I made the shoulder about a thousandth of an inch bigger in diameter than the washer, then hand fitted the washer with a small half round file, taking a little at a time off the inside.
It's perfect now. There's no movement of the pointer whatsoever.
Accuracy seems really good too. When I index it to the threading position and check with a fish, it repeats to at least as accurate as the fish is capable of.
I made a new toolpost stud, with a shoulder that sits about .04" higher than the index ring. I made the shoulder about a thousandth of an inch bigger in diameter than the washer, then hand fitted the washer with a small half round file, taking a little at a time off the inside.
It's perfect now. There's no movement of the pointer whatsoever.
Accuracy seems really good too. When I index it to the threading position and check with a fish, it repeats to at least as accurate as the fish is capable of.