Finding Center

That would work ok. I have a 1/8" end mill with a 3/8"'shank that I have a collet for.
 
The above advice is good. Don’t know your budget or quantity run? If you want a hole where it should be, then get an end mill with a drill point end and hold it in a collet and tighten all your gibs. And get a vise with both jaws that are moveable so it self centers…Good Luck, Dave.
 
I never used a electronic edge finder so this may be already taken into account but what is the diameter of the probe? Secondly if you have a center drill that fits in one of your collects use it. I realize the smaller center drill bodies may be to small for most collect sets.

Good luck tracing your problem. Sometimes the obvious stares us in the face at least mine did.
 
Use dead stick to find true center. Place jig borer style indicator in collet eye ball center. Set zero by sweeping edge lift indicator swing 180 move indicator down slowly sweep indicator second edge read difference half reading result dead center. Always use center drill ,drill will run off every time. Center drills come in fraction size, get 3/8 CD no need of chuck. Hope this helps Tom
 
Only electronic edge finder I ever used was off. Haven't used one since. Try a 'regular' one.
 
Thanks, Guys. I have ordered a #4 center drill which has a 5/16 body. Also ordered a couple of collets in small sizes to accommodate the small drills I use on part of the holes. I already have collets for the larger drills. Won't get a chance to get in the shop before Thursday. I'll see what happens.
 
just a little tip for center drills, don't run them into the work too deep-
you'll break the tip off- easily especially in 304 stainless (don't ask how i know that :mad:)

i always peck drill centerdrills and have lots of bacon grease/mineral oil mix slathered on
good luck:D
 
My machinist buddy taught me the peck drill trick. He says it helps the bit to center better. I don't drill anything harder than 1018.
 
Comrade, why not spot drill and use a vee block?
Regardless of size variation barstock will always sit centered in vee.
 
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