The toublemaker...is it part "lower taper"on picture at your Reply #53 on this page?
No, the problem is the vertical slide part of the ball-slide., when I threaded the part is shrunk slightly. I had to re-ream it , (which I made a hash of) and now it doesn't fit as well.
To me more changing part looks "upper taper" . Is it guided on the double tapper end
Yes, I know what you mean. My
hope was that the DTI spring would force it to one side thus reducing the error caused by the slack.
I think that the basic design is sound,
sound maybe, but not
good - it is too reliant on near-perfect sliding joints - Like the case of the 'upper-taper' above, it started off a very good fit, but as the device was polished and used the fit became worst - to the point of not being accurate enough.
I'll have another look at it over the weekend, but I have a lot of work coming up, so the 3d probe will have to go on the back burner if it isn't abandoned.
What is that professional looking probe on upper picture?
It's a Sony TS1 touch probe - It plugs into the back of the Magnascale DRO allowing it to locate to a couple of microns (it says in the manual!) - It really just a 10mm ball (on a spring) . When it makes contact with ground (machine/earth) it completes a circuit that tells the DRO to bleep (in an annoyingly loud way)
Bill