Drilling Stainless??

[Gone Sleddin]

Pry a dumb question, but trying to mount a new exhaust deflector under my sled. appears to be some stainless steel to protect the area around the exhaust exit an chaincase. any tricks to drilling trough it?? i bought some cobalt bits made for hard metals and they barely scratch it. suggestions?

 

[ruffryder]

Pry a dumb question, but trying to mount a new exhaust deflector under my sled. appears to be some stainless steel to protect the area around the exhaust exit an chaincase. any tricks to drilling trough it?? i bought some cobalt bits made for hard metals and they barely scratch it. suggestions?

good bits, go slow, push hard..

That is the best I can do..

 

[POLZIN]

push firmly! otherwise he is correct 600-800 rpms on your drill . go to fast and you will work harden the material and that can be a problem requiring a carbide bit $$$ or a grinder

 

[xcr800man]

The bit cant be dull, but a standard bit is fine nothing fancy. SLOW and PUSH hard.

 

[HDEMWET]

use a center punch and really whallop the thing, the divot it leaves behind will help the bit catch an edge to start digging in a little quicker and will also stop the bit from wandering all over your part leaving track marks everywhere, other than that, lowest speed you can manage and rapid tap for bit lube.

 

[Burndown1]

Mystic Metal mover. Yellow can. 3 to 4 drops is plenty. To much will make the problem worse. This stuff is amazing. I use it to drill extreamly hard crankshafts while balancing. Google it.

 

[Burndown1]

Mistic metal mover. Sorry I misspelled it the first time.

 

[simnil]

Some Stainless qualities will deformation harden a lot if a center punch is used making it close to impossible to drill in the mark.