vmipacman
Cast Iron
- Joined
- Nov 21, 2014
- Location
- Virginia, USA
If you were faced with a simple bolt pattern with +/-.005 tolerances on a large, awkward or hard to fixture part, would you use a drill jig to put those holes in?
Example, 4x 1/4-20 threaded holes on a large 2" thick steel plate cut in a funny shape making it difficult to put on a machine.
Other options would be mag base drill or mag base drill and a drill jig. Would you really need a jig for the tap or would it follow the hole well enough. I guess a couple assumptions are that the drilling tapping is done with new tools and the operator is pretty careful and experienced. Just wondering what tolerances you could hold with a good jig.
Example, 4x 1/4-20 threaded holes on a large 2" thick steel plate cut in a funny shape making it difficult to put on a machine.
Other options would be mag base drill or mag base drill and a drill jig. Would you really need a jig for the tap or would it follow the hole well enough. I guess a couple assumptions are that the drilling tapping is done with new tools and the operator is pretty careful and experienced. Just wondering what tolerances you could hold with a good jig.