[9W Monighan]

Thanks Kerst..

Tom, I've heard of heat blocking putty. I think we tried that 25yrs ago but we never needed it for our work but like you said; It may come in handy for the intricate work on the boom. I have a tiny jewelers torch if my resistance soldering setup doesn't work. I hope with the resistance machine it will locate the heat right where I need it.
Something I noticed with the closeup picture that's hard to see without glasses is the tube bends up on the ends. My slitting saw needs to be a couple thousandths wider. My milling was on the big side of my intended size because trying to mill those long pieces,it's hard to hold straight and no deflection. I would love to have a vice setup with 32'' long jaws but I never built one.