• This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn more.
  • Some users may still have issues remaining logged into the forum. Please delete old bookmarks. If you are still having issues, go to the Site Issues forum here and let us know EXACTLY what you clicked on before the login issue arose, so we can try to track it down. We are working on this, and appreciate your patience. Thank you.

[4]

Caliper Z-Axis DRO for Millrite

January Project of the Month [3]
[10] Like what you see?
Click here to donate to this forum and upgrade your account!

wildo

Active Member
Active Member
Joined
Dec 7, 2015
Messages
380
Likes
353
#1
It took me a couple days to get this done, and rather uncharacteristically I took almost no photos of the guts of the project. I picked up a 4" digital caliper from Harbor Freight and converted it to use as a DRO on the Z axis on my Millrite. The project really turned out well and I think this will be a much needed addition.

To borrow a photo from Mike Amick's webpage, I modified the quill feed connector nut by removing the needle and grinding down that nub that the needle fits into. There was a grub screw that held the needle in place. All of this was ground away.



The resulting flat area was drilled and threaded 6-32 and I machined a piece of aluminum roughly this shape to bolt onto the connector nut.





The machine was reassembled (actually- I had to take it apart multiple times to adjust and tweak the fit) and the caliper was screwed to the newly machined piece. I did modify the caliper by grinding off the unneeded jaws. I drilled the two screw holes using a carbide end mill which made quick work of it.



I'm very pleased with how it turned out, and especially with how well it works. Here is a video I shot for some friends on Facebook, but I'll share here too. Check it out here:
 

scoopydo

H-M Supporter - Premium Member
H-M Supporter-Premium Member
Joined
Jul 24, 2015
Messages
46
Likes
8
#2
Nice job! I wish I could do that with mine but it has a power down feed and I just can't see any way to make it work?
 

cathead

Active User
Active Member
Joined
Feb 7, 2013
Messages
783
Likes
841
#3
Nice! I would try to fasten the bottom of the caliper somehow. Even a blob of J-B weld with a nut imbedded in it would
give you a second point to hold the bottom of the non moving part of the caliper. Nice mill! I especially like the crank part,
good and heavy and signature of a quality built machine.
 
[6]
[5] [7]