Best drill bit for dilling thru weld?

[phantom 0]

I'm planning on my third conversion, but I remember I had a hell of a time drilling thru the weld on the trigger plate. What is the best drill bit to use?, thank you.

[ernestmayhand 10]

I couldn't even drill through the spot weld, period. I tried a titanium bit and a carbide bit. Used beeswax on there too. Even tried a drill press after my arm wore out with the hand drill. Those titanium bits go right through that Izhmash finish but barely pricked that damn spot weld. What I did was grind off the 2 rivets and pull the plate off, then grind the spot weld from the now accesible top side of the sporter plate until the trigger guard was it's own entity for my reuse.

Edited October 27, 2008 by ernestmayhand

[gtnichols 51]

I used cobalt

drill let cool down,

wax, drill, let cool down,

Wax, and repaet till drilled through.

i also used a drill press and a vise,..

[wally 2]

drill slow,dont run your drill full blast,I use the dewalt bits you can buy at home depot or lowes and never have any problems

[Eric Draven 0]

Ummm...Carbide bit?? Thats what I use to drill out Heat treated steel and Ti. They cut well, better than anything else, BUT they can be brittle so dont bend them or, SNAP!! Try McMaster Carr. They have good prices and a good selection.

 

I make knives for a living...and Thats what I used for my S20 conversion. I used my Vert. Mill for most of the rest of it, rivets and such.

[chevymann 13]

I use center drills. They are a little more rigid and as long as you don't press too hard with the drill press, they work fine.

 

http://littlemachineshop.com/products/prod...?ProductID=1230

[lbreevesii 0]

I couldn't get a dent in that thing with a bit either. I used a conical grinding bit for the dremel to make a divot in it so the cobolt bit could grab. Worked like a charm once I thought to do it...

[mstranglr 9]

I use the pointed grinding bit on my Dremel tool also, but thats all I use. I dont even bother attemping to drill those, takes too long.

[schadenfreude 2]

I used a glass and tile bit from home depot and some cutting oil and it cut through the spot weld like butter used a slow speed on the drill press and a sort of pulsing motion and it only took a few seconds. This was on a spot weld that a cobalt bit didn't touch.

 

Seriously, the easiest way. I've done a few of these and it the best way to fly through it.

[patriot 7,197]

I wonder how well a plasma cutter would work?

[JDNJ1985 0]

Question guys:

 

With the beeswaz, do you apply it to the bit or the spot that is to be drilled?

 

thanks

 

-Joe

[JDNJ1985 0]

Question guys:

 

With the beeswaz, do you apply it to the bit or the spot that is to be drilled?

 

thanks

 

-Joe

[wlnt 2]

BELIEVE IT OR NOT:

 

I timed myself and it took 35 SECONDS to drill through the weld with a 3/16 inch 100% sold carbide end mill.

 

I got mine from Dinzag who sells them for $10.

 

3/16 is also the perfect size to drill any other holes you need (like a hole in the receiver for a screw to hold the front of the trigger guard).

 

I got mine from Dinzag because I was already ordering from him.

 

louielouie

[Shellshock1918 1]

I'm planning on my third conversion, but I remember I had a hell of a time drilling thru the weld on the trigger plate. What is the best drill bit to use?, thank you.

 

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