Jerrow's inletting black is an old standby and works very well. I sometimes use a smoke lamp with very intricate inletting but it can be a challenge to hold on to smaller pieces like forend irons while you're smoking them.

I've never heard of a commercially made smoke lamp, most of us make them from scratch. Mine is made out of a baby food jar with a cut off 30-30 case soldered onto the top to hold the wick. I use locally available lamp oil for fuel, nice and smoky.

Hope this helps.

Dan

Dan May
www.classicgunstocks.com
www.millersingletrigger.com