A buddy gave me the well worn baseplate off his worm drive skilsaw. It has a crack near the front where the 2 edges come together (right in front of the blade) I just tried to weld it using 2 different size tungstens, between 80 and 150 amps (it's about 1/8" material) and using 4047 filler. All I got was a black sooty area with a little mound of filler on each side of the crack (crack has been slightly V grooved, but each side of the crack touch each other) I've got good gas, good filler and new Lanthanated tungstens, using a Invertig 200, AC, balance about in the middle, freq towards upper side.
Any ideas?
Thanks
J