Gallery, Projects and General > How do I??

Drill holes in a bolt circle

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Bernd:
Why am I asking this? Check out this THREAD first.

As I said I was going to ask this question here and see how many can come up with an answer. The criteria is that you can't use an indexing head or DRO. Since I don't have an indexing head I can't use that. But my Bridgeport does have a DRO, but I'm not going to use it.

The piece that will need the holes is the side of the bull gear (minus it's teeth) in this pic.


This will be a bit of a tip for the newbies. I'm sure some of you old pharts know how to do this. So let the answers begin.

Bernd

Darren:
If you hadn't machined the teeth off the gear? Use another gear?

sbwhart:
Hi

I'd use another gear.

This is a cheap and chearfull devider I made when I first started up, spent a load of cash on other bits, neaded to divide a part up, got hold of a gear with 12 teath this gave me 2, 3, 4, 6, divisions, I still use it from time to time quick and easy to set up just grip it in the vice. Job Sorted  :thumbup:



Cheers
 :wave:

Stew

Darren:
Stew, you forgot one  :scratch:

Bernd:
Nope, can't use a gear.

We are going to create this from scratch.  :smart:

By the way the number of teeth on the bull gear "was" 76. Not a very divisable number once you get past 4 positions.

Bernd

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