Gallery, Projects and General > The Design Shop
Coax indicator design
Rob.Wilson:
:offtopic: but just a thought ,, i was thinking of using the ball from piercing barbells for the end of the probe ,, they are stainless steel , come in a range of sizes and have a threaded hole :med: ,
http://en.wikipedia.org/wiki/File:Piercing-Barbell.jpg
Rob
bp:
Somewhere for a similar application, I'm pretty sure that I've seen someone using balls from ball bearings sat in a little recess, retained by Araldite, or Loctite. Could even soft solder them, the temperature wouldn't be high enough to affect the hardness of the balls. Balls are available from bearing stockists at an amazingly low price for such a precision item.
Cheers
Bill Pudney
Adelaide, Australia
Divided he ad:
Bill.... :jaw: :bow: :bow: :bow: :beer:
Well, that's just great (not sarcasm) made with pace too! 0.5 thou wobble!!! Not a bad tolerance for the prototype eh?
Very impressed :clap:
Ralph.
Brass_Machine:
Wow. :bow:
Not only does the prototype work fairly well, it looks fantastic. Looking forward to MK2
Good job sir
Eric
Bogstandard:
Bill,
Methinks you've got it nailed.
Very well done.
I honestly don't think you need to make a Mk 2, just turn up a close fitting internal mandrel and gently skim the end of Mk 1. You should only be removing about a thou, so a tiny spot of superglue should hold it.
BTW, you have really shown with your vid how easy these tools make setting up finding centre really is. It used to take me ages to do it the normal way with a DTI, even the act of turning it by hand used to deflect the needle slightly, my coax tool was a true revelation when I first started to use it.
Bogs
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