Search found 9 matches

by Mark Proulx
Tue Aug 16, 2022 12:14 am
Forum: Mig and Flux Core - gas metal arc welding & flux cored arc welding
Topic: Successful Repair
Replies: 0
Views: 4618

Successful Repair

I needed to repair a bent clevis ear on an agricultural implement. The job required butt welding 3/8” plate in a 3G position. I owe Jody big time for providing tutorials that allowed me to successfully complete the repair. It isn’t the most beautiful job, but as my first repair of anything, I’m plea...
by Mark Proulx
Mon Oct 21, 2019 12:00 pm
Forum: Mig and Flux Core - gas metal arc welding & flux cored arc welding
Topic: Cut/Etch Difficulty
Replies: 20
Views: 2195

Re: Cut/Etch Difficulty

@Coldman:

I thought so too. That’s why I wiped the surface with isopropyl alcohol after polishing. It did not seem to matter.
by Mark Proulx
Mon Oct 21, 2019 11:59 am
Forum: Mig and Flux Core - gas metal arc welding & flux cored arc welding
Topic: Cut/Etch Difficulty
Replies: 20
Views: 2195

Re: Cut/Etch Difficulty

@weldin mike 27:

That’s what I thought, too. I suspect that you’re correct regarding the use of “real” etchants.
by Mark Proulx
Sun Oct 20, 2019 10:26 pm
Forum: Mig and Flux Core - gas metal arc welding & flux cored arc welding
Topic: Cut/Etch Difficulty
Replies: 20
Views: 2195

Re: Cut/Etch Difficulty

Here’s another. Same parameters:
by Mark Proulx
Sun Oct 20, 2019 3:51 pm
Forum: Mig and Flux Core - gas metal arc welding & flux cored arc welding
Topic: Cut/Etch Difficulty
Replies: 20
Views: 2195

Re: Cut/Etch Difficulty

@Oscar:

Big time thanks for the suggestion. I backed off on the shine and obtained a much better result.
by Mark Proulx
Sat Oct 19, 2019 6:11 pm
Forum: Mig and Flux Core - gas metal arc welding & flux cored arc welding
Topic: Cut/Etch Difficulty
Replies: 20
Views: 2195

Re: Cut/Etch Difficulty

Sorry for the tardy reply. I wanted to include photos, so I had to wait to get out to the shop. The uploaded photos show what I’ve been doing. (I know that one of the beads exhibits porosity; no need to flag that.) I’ve tried letting the jelly sit overnight; this didn’t help. I have tried heating th...
by Mark Proulx
Fri Oct 18, 2019 1:29 pm
Forum: Mig and Flux Core - gas metal arc welding & flux cored arc welding
Topic: Cut/Etch Difficulty
Replies: 20
Views: 2195

Cut/Etch Difficulty

I’m trying to cut and macro etch some MIG-welded carbon steel T-joints to assess penetration. I have watched numerous videos on this subject on the “Welding Tips and Tricks” channel and have tried to replicate the process using Naval Jelly as an etchant. For the life of me, I can’t get results that ...
by Mark Proulx
Thu Oct 17, 2019 6:43 pm
Forum: Stick Welding/Arc Welding - Shielded Metal Arc Welding
Topic: Cutting and etching
Replies: 3
Views: 825

Re: Cutting and etching

I’m new to the forum, so apologies in advance for asking dumb or basic questions. I’ve been trying to cut and etch some MIG-welded T-joints in 1/4” carbon steel so that I can assess the degree of penetration that I get with different settings. I’ve watched videos on this subject on Welding Tips and ...
by Mark Proulx
Thu Oct 17, 2019 6:30 pm
Forum: Member Introductions
Topic: New member - hello from Bellingham, Washington
Replies: 1
Views: 519

New member - hello from Bellingham, Washington

Good day, all. I’m a beginner welder and hope that you can help me improve. My focus at present is MIG welding of carbon steel, with a goal of making fixtures for my shop.