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no, its a solid weld, basically like whipping some 6010. and the slag you mentioned is actually silicon that melted out of the electrode and solidified on the top of the weld, where it cooled after the arc was moved.
also, the pointed end that you menioned generally means too much heat.
(boy, its been a while since i've been on here)
Those are good words and it makes sense to me as a rookie, pointed end too much heat, round even puddle just right.Mike
You are right, those welds are a little peaked...but they are rather consistant (IMO at least). I had the MM180 set up for 3/16" The tube is .125 wall, and the top is .250. I didnt want to blow holes in the tube, and since I spaced the welds out all the way around the inside perimeter of the table like that...its not going anywhere. Anyway, thats probably why they ended up like that.
At the beginning and end of each weld there is a tack. I dont know if thats the part that youre talking about...but in the middle of the weld there isnt MUCH variation. The weld on the right is a much better example of that. (I know im not gods gift to welding, or a machine...but they dont look too bad to me.)
The one weld on the left in that picture is a little boogered, my glove got stuck on a piece of slag for a second. Anyway, thats question 1.
Question 2...how long have you been welding to be able to pull that off on the .188 CR?
Anyway, about to start another thread for my welding cart, feel free to throw your .02 in over there too.
Precision is only as important as the project...if you're building a rocket ship...1/64" would matter. If you're building a sledgehammer...an 1/8" probably wont.