I usually dip the heated part in the Kasenit for about 2-5 seconds, enough time to coat the part real good..
As far as finding Kasenit, the last time I bought it was off of a gunsmith friend years ago "he's sitting at the Lords table now
" but if they had it you can get it through Brownels or Tack of the Wolf, I've tried my local welding supply & they don't carry it.