Robert - thanks for all your posts.
Are you heating the metal up enough to get color changes? Do you anneal the metal afterwards? I have seen several different opinions on how much heat to use when heat shrinking and was wondering what you do.
As always, your work is fantastic.
Ivan
Finally got out in the garage and drilled out the failed plug welds. The undercoating had melted and bubbled over a radius of 1/2 - 3/4 of an inch from the center of the welds. You could definitely see that the undercoating material had gotten mixed in with the weld. Only one out of the four...
Thanks for the reply Robert. The whole time I was prepping it, welding it and for 24 hours after I kept thinking "I'm using epoxy primer". When my I'm so stupid moment finally came I realized right away what my mistake was. Oh we'll, live and learn.
Ivan
If it works for Robert, surely it will work for me.
Right? Hopefully? Maybe? NO!!!!!
Robert talks about using a flattened drill bit to clean EPOXY PRIMER (emphasis mine) to prep for a plug weld. Well, haven't yet made a flattened drill bit so sat there and scraped the receiving end of several...
I am pleased with the way way the parking brake brackets turned out. Plug welding a 1/4 inch hole definitely required welding in a circular motion. I can see that a drill size "A" would have been perfect so that you can weld in the middle and let it fill in.
Maybe slight underpenetration in one...
Robert - thanks for your reply. I am so used to referring to drill sizes as 3/8 or 1/2 I had forgotten there are other nomenclature systems. So let me apologize for wasting your time.
One of the parking brake brackets already has 1/4 inch plug holes in it so I will weld it upside down. I think...
Thanks Robert and everyone for all your great info here. I found the link to this thread on one of the mustang sites.
I am doing the prep work to MIG weld 14 gauge parking brake brackets to the underside of my mustang. In post 39 you said "use a letter A for all my plug welds". Are you...