knucklehead 61· Registered
Discussion Starter · #1 ·
ok, i must be retarded or something. i have a parts kit & need to remove the old rsp rivits. the original rsp was plasma cut off. someone has started drilling out the rivits & gave up. i chucked it up in my mill & used carbide drill bits & could only polish the rivits with the bit. no chips off the drill! next, i used a cut off wheel to grind down the rivit heads so i could re center punch them & try drilling again (hoping that i had cut through some of the hardened steel). no dice, can barely even mark the rivit with a center punch! tried another brand new cobalt bit (slow & lots of cutting oil) & only made a small nearly polished indentation. W.T.F. am i doing wrong here? what's the secret? someone school me please!