Really.......even with the heat, and threads right next door.......I've done quite a bit of tig in my life, and I'd call it risky..........that's just me though.Tungsten is sharpend to a needle point extended a little further out of the cup add a little more argon and there isnt usualy a problem.Have done it many times in my dads old shop.But one must go with what is comfortable to them,and when it works sweeeeeeet.Good luck hope your all set with it soon.Would make me crazy.