best way to penetrate through metal?, needa drill a hole through the metal of the celica Options

[daazndood]

hey guys. unfortunetly, my 404 rear lip doesnt line up exactly with my rear bumper. the end of the lip, where you drill the holes to screw onto the car, isnt long enough to reach the predrilled holes in the cars wheel well. so i need to drill new holes a little closer to the side in order to screw on my lip.

i've noticed that this part of the car is made of metal. im having a hard time making a hole through this. any tips for me?

its the part in the wheel well of the rear wheels. on stock celicas, it has this rubber thingy. its opposite of the area where the side skirts screw on.

[97lestyousay]

Almost any piece of crap drill, will drill though a panel. The sheetmetal
on our cars is super thin. My cordless cost 19.99 at harbor frieght
and it had no problems drilling 6 holes 3/32 dia thu fiberglass and panel,
with the same crappy bit the drill came with. I work at a machine shop
so I could use our shops dewalt and cobalt or even carbide bits, there is
simply no need. A good sharp high speed steel bit and a cordless that
is turning over 500 rpm will do the job just fine. The more rpms the better
untin you get up to 3000 or so then you start burning bits at a rapid rate.
I use 3000 as an example for a small diameter bit, a larger bit burns up
at lower rpms.


75 sfpm(surface feet per minute) is a safe surface speed for mild steel X 4 (pie rounded)= 300
300 / diameter of bit in my case .093" = 3225. 3200 is the highest rpm you should
turn otherwise you will burn up bits all day long, a larger drill would be slower than that.
The formula is the same just divide 300 by the dia bit you are using.
Different materials run different sfpm. This formula is for mild steel, aluminum would
be considerably faster, and stuff like stainless or titainium would be slower.