Drilling out studs

[PositronicRay]

My wheel arch liner is fitted with 4 x screws and 6 X 5mm studs with plastic nuts. When I removed the liner each stud snapped.

Now I could drill some holes in the inner wing and bung a few self tappers in but I'd rather drill out the studs and put some self tappers where the studs are.

I assume these studs would just be mild steel? My drill bits (which are old and knackered) won't touch them, should I buy some std HSS drill bits or do I need something tougher?

Is their any other solution?

[PositronicRay]

Thanks chaps.

[PositronicRay]

Toaster Pilot said:

Don't forget - go slow and use plenty of lube

It'll be a couple of days before I can get onto it, I've found a recipe for some lube. I'll substitute some old chainsaw lube for the olive oil (I can't imagine the trauma if I nick some of Mrs PR's extra virgin stuff)


"Lubrication the drill-bit must be lubricated and cooled all at the same time the best way to do this in a household situation is to make a mixture called an emulsion. This is a mix of oil and water and is used in steel cutting.For home use 2 parts water and one part olive or rape-seed oil and add a little dish washing liquid about tea-spoon full. Mix together by shaking vigorously in a discarded dish washing liquid bottle. You can use the bottle and nozzle to apply liberal amounts of the emulsion to the drill while drilling."