Wandering drill bit

[PapaPerk]

No pictures.....It didnt happen

I posted link to pics above.

 

[newbury]

rather than using bolts, could you use some sort of pin that would facilitate removal and re-installation? Or would that leave things too loose?

The removal/replacement of the bolts (only 2) is quick and easy, I've popped mine off to use my clamp on pallet forks and reattach it quickly.

 

[LD1]

Sorry, meant to quote meos1

 

[dragoneggs]

I always figured those were more expensive than that. That is not a bad price, with no shipping delivered to your door by the brown truck.

Yeah that is a heck of a price! They are usually quite a bit more but I think these are cheaper as they are limited in their depth capability. I think I'm going to order them if still available.

 

[davrow]

I have to work with people that have that "step up 1/8" or 1/4" each time mentality. The result is a ton of 1/2"-1" chisel point bits that have chipped/busted/cracked cutting edges right out at the edge. Some people just refuse to learn.

I have (had?) that mentality - not because I refuse to learn but because I didn't know any better - until this post.

It's the 1st I've heard about 'how it should be done'. And yes, I chipped two 3/4" bits doing it from a 1/2" pilot hole. Pissed me off, those were expensive bits.

Thanks for the advice.

 

[LD1]

Yep. Proper way is to only pilot big enough to clear the chisel point. If you have split point bits, no pilot is even needed.

 

[tcreeley]

For wandering bits I use this : Electrical 10mm Shank 4mm 0.16 Center Spot Drill Bit Power Tool

spot center drill bit View attachment 409094

 

[ericher69]

I go automatic center punch. Then with a 5/8 chuck Ingersoll rand air drill. Great control at the start to avoid a wandering bit and full speed seems to be just right with cutting oil.

Best part? If the bit binds it just stalls the air drill instead of breaking your knuckles.

I have never had ANY luck pilot drilling and stepping up...

Sent from my iPhone 5s 64Gb using TractorByNet

 

[SPYDERLK]

Yep. Proper way is to only pilot big enough to clear the chisel point. If you have split point bits, no pilot is even needed.

And it helps if you stop a pilot hole just before it breaks thru. Then fill it with cutting oil and go with the big bit.