Re: "New Members" area
Posted: Thu Feb 28, 2013 8:45 am
Welcome cyclhed! Always good to have someone with shared interests around.
"welding round tube with coped fit ups at angles less than 90 degrees are difficult" One way to "get in there" that works well is to build an aluminium foil argon dam behind the area your welding so you can extend your tungsten enough to reach the joint. That and I use a #4 or #5 cup with 3/32 electrode. <read, think cheap, small and steal the Ole' Lady's tin foil> Just don't wrap the foil to tight against the weld joint, leave kind of a bowl to hold the gas...tin foil vaporizes really fast with a tig arc, don't ask how I know. Another option would be to use a gas lens but I don't have one for my torch, maybe some day...I want to try one of these; http://www.usaweld.com/TIG-Pyrex-Cups-Kits-s/67.htm
It looks like your frame is coming along nicely. What "Grade" CREW are you using for your frame, 1018, 1020? DOM is over rated and $$$ for a bike frame IMHO.
"welding round tube with coped fit ups at angles less than 90 degrees are difficult" One way to "get in there" that works well is to build an aluminium foil argon dam behind the area your welding so you can extend your tungsten enough to reach the joint. That and I use a #4 or #5 cup with 3/32 electrode. <read, think cheap, small and steal the Ole' Lady's tin foil> Just don't wrap the foil to tight against the weld joint, leave kind of a bowl to hold the gas...tin foil vaporizes really fast with a tig arc, don't ask how I know. Another option would be to use a gas lens but I don't have one for my torch, maybe some day...I want to try one of these; http://www.usaweld.com/TIG-Pyrex-Cups-Kits-s/67.htm
It looks like your frame is coming along nicely. What "Grade" CREW are you using for your frame, 1018, 1020? DOM is over rated and $$$ for a bike frame IMHO.