Having good luck with a recent question...

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About 2 weeks ago I asked about welding techniques for TIG welding bandsaw blades.  I played with them and found a pretty solid technique that has been holding up great.  I am using a synchro 200, 3/32 red, er70-2 filler rod which I found its nearly impossible to do without using filler.  You need something to suck the heat out of it no matter how much you try to throttle the peddle.  Maybe with some more playing I could do it without, but I believe in the old sang, " if it aint broken don't fix it"  no pun intended.  I first tried to use a piece of aluminum to keep heat down, but that seemed to suck too much and made getting the .025 blade to wet difficult.  I then put a piece of 3/32 steel under it and with the blade overlapped a little along with the filler and 25amps it worked nearly perfect.  Its still a little tricky to when you get near the teeth to keep it from melting a few of them, but the filler rod helps to sheild them from the arc.  Eventually you will get it though.  I did several blades thus far for my machines and they have cut several dozen pretty heavy guage stuff and they are holding up fine.  I also used a propane torch and heated the HAZ area to a dull red 3-4 times letting it air cool after.  This will aneal the brittleness out of the weld.  My one machine is a little grizzley 6" cuttoff that has some pretty small wheels on it and it just sliced through 4" diameter solid round stock like butter............well it took some time but the blade was still in one piece at the end of the cutting.  Thanks to those that helped.  I thought my personal finding might help some others as well.Best Times with 434 Naturally Aspirated Vette60 - 1.261/8 -  6.37@ 107.25 MPH 1/4 - 10.08 & 134.9MPH1/4 - 9.60@144MPH
Reply:thanks for the info.when my blades break the teeth are still good on them. the usually do not break on the orginal weld. I have welded about 5 or so back together and they last for a few cuts. then the blade will break again, but this time at another spot usually 10-20 inches away from my weld. the welds dont break but it breaks in a new spot. I havent figured that one out, because it not even breaking in the HAZ. I welded one 4 different times and it broke everytime. I guess it was a sign to get a new one. I guess the back of the blade was stressed.I use to buy the bimetal blades and I could get 500 cuts out of a 20 dollar blade. Now I buy the cheap blades at enco for $5 and get about 300 cuts before they break. I thought I would get more cuts out of them but the teeth are fine on them when they break. I think they would last longer but sometime I get in a hurry and set the down feed a little high.