#08-081 Using a Drill Press to Cut Plate Holes

Just a little knowledge that an old friend of mine corrected me on one time, never ran a file backwords u just dull the file, he was right, i know its a pain in the but on deburing holes but a rotory file works great for that as well. that a good idea usingthe covers for plate's i looked all over the hardware and never even thought of it. Keep up the good work.

On your finish process - you could you use a larger bit to just touch the the burred edges on the back side of the plates making the finish time breeze. I do this when I am drilling stainless steel rotors.

Must have someing to do with the step and increased diameter being tapered. The first step goes really fast. So when I start with a 3/16 hole then goes to 1/4 then 5/16 then 3/8 I think because the heat gets sinked by the overall size of the bit. It lasts longer. I don't buy titanium at all you are right there those are throw away bits one time use. $27 for my stepped bit replaces 3/16 to 1 inch in 1/16 steps that's like 13 bits.

I know they aren't cheap. I didn't think they were made in colbalt or HHS, so how does it hold up for you?

Charlie Ehler

I like a unibit or stepped bit that goes from 3/16 up to 1 inch and the sweet part is the burs ccme off with the next step on the bit no filing for me. And unibits aren't cheap either.