Drilling stainless steel

[Tig]

I use these http://www.irwin.com/tools/drill-bit...tep-drill-sets or http://www.mytoolstore.com/klein/59001.html or http://www.google.com/#q=uni+bits&hl...w=1603&bih=749 , I've had pretty good luck with them.

I have drilled roughly 30 holes in 1/8" stainless with a 1/2" Irwin unibit and still had enough bite for more. Check unibit on the bay and you'll find some great deals. Dont forget to use a little lubricant, that always helps to. Spray it down with some contact cleaner or whipe it down with some dykem dye remover before welding the bungs on

[farmtruc]

thanks, i'll give it a try.

[mattc]

pretty much any carbide coated drills will be fine, depending on the type of stainless but i'm sure your not using anything to wierd (some stainless is sorta gummy when your machining on it). also like stated use some good cutting fluid and it will help clean out the chips and extend the life of the cutter.

we had to drill 2000 holes in some beams and we used those hougen bits, are you using the center? if they arent guided they dont do to well, and will chip/break

if your doing this in a mill or have one available you can use an insert tool holder. they are more expensive initially but you can jsut replace the inserts when they wear out as opposed to replacing those drills all the time.

something like this

http://www1.mscdirect.com/cgi/NNSRIT...-SearchResults

[darnie1987]

These bits work great, My dads a regional manager in texas for forney so we play with alot of that stuff its pretty darn good. BTW tap magic works wonders

https://www.forneyind.com/store/cate...ategory_id=595

[gagliano7]

i use step bits to cut through stainless door kick plates at work.