Soooooooo, out to my IBMG (Itty Bitty Murder Garage) goes I.
First, got to get the compressor on to run my die grinder to clean the areas that’ll need welding on the chassis support and body.
Then I got the support up under the car and decided I wanted to do the first tack weld along the pinch weld.
Now came play time with the tig.
I first wanted to try my theory of running the torch around the rosette holes to seal up the layers of the pinch weld to try to block off the crap between the layers.
Tonight was an interesting learning night for me.
First I tried straight dc tig at 80 amps. That successfully blew a nice hole in the drilled out hole! So I dropped it to sixty and was right on the edge of a blowout again, though it was hard to tell because the dirty nasty crap between the layers made for popcorn, smoke, and a nice crappy smell. The nasty stuff likes to burn on straight dc. It sounded like when I MIG’d the other side.
So I’m thinking, “It’s layers of thin gauge, like 20-22, let’s give the old dc pulse a go”.
Now this kind of works. I first went back up to 80 amps, it could easily take more. I used about 5hz to begin with and went up to about 25. I played with it for a bit and about 105 amps works really nice. For the thin pinched sheet metal, it works great..........
Remember that thick freaking tubing I used for the CS? The dc pulse at 105 doesn’t seem to be nearly hot enough for it to burn into it. It’s almost like it needs to be preheated to weld.
Hey @RaggedGT , chris, I need advice. Help a brother out here.
I‘m curious as to wether I should just go back to MIG for the chassis support. TIG welding produces amazing welds but is really, really difficult when you have about twelve inches of access and are laying down on the floor using one hand for the torch and one hand for the feeder.
Or maybe a combo of both? I was able to seal an edge of the two panel towards the front of the pinch weld. The question is, is it sealed enough to come in with a MIG, or will that just cut back through the TIG weld and give me the damned popcorn fest I had last time?
So, what did I really accomplish tonight. I gained knowledge, super knowledge even!
Tomorrow I’m breaking out the MIG to get it at least tacked in. I remember that pinch weld crapola from the other side very well
, I would like to have pretty welds to show off, but am willing to accept ground down and filled welds too.
First, got to get the compressor on to run my die grinder to clean the areas that’ll need welding on the chassis support and body.
Then I got the support up under the car and decided I wanted to do the first tack weld along the pinch weld.
Now came play time with the tig.
I first wanted to try my theory of running the torch around the rosette holes to seal up the layers of the pinch weld to try to block off the crap between the layers.
Tonight was an interesting learning night for me.
First I tried straight dc tig at 80 amps. That successfully blew a nice hole in the drilled out hole! So I dropped it to sixty and was right on the edge of a blowout again, though it was hard to tell because the dirty nasty crap between the layers made for popcorn, smoke, and a nice crappy smell. The nasty stuff likes to burn on straight dc. It sounded like when I MIG’d the other side.
So I’m thinking, “It’s layers of thin gauge, like 20-22, let’s give the old dc pulse a go”.
Now this kind of works. I first went back up to 80 amps, it could easily take more. I used about 5hz to begin with and went up to about 25. I played with it for a bit and about 105 amps works really nice. For the thin pinched sheet metal, it works great..........
Remember that thick freaking tubing I used for the CS? The dc pulse at 105 doesn’t seem to be nearly hot enough for it to burn into it. It’s almost like it needs to be preheated to weld.
Hey @RaggedGT , chris, I need advice. Help a brother out here.
I‘m curious as to wether I should just go back to MIG for the chassis support. TIG welding produces amazing welds but is really, really difficult when you have about twelve inches of access and are laying down on the floor using one hand for the torch and one hand for the feeder.
Or maybe a combo of both? I was able to seal an edge of the two panel towards the front of the pinch weld. The question is, is it sealed enough to come in with a MIG, or will that just cut back through the TIG weld and give me the damned popcorn fest I had last time?
So, what did I really accomplish tonight. I gained knowledge, super knowledge even!
Tomorrow I’m breaking out the MIG to get it at least tacked in. I remember that pinch weld crapola from the other side very well
, I would like to have pretty welds to show off, but am willing to accept ground down and filled welds too.
load of yard work to make it through first.
