Search found 1898 matches

by MinnesotaDave
Tue Feb 16, 2021 4:09 pm
Forum: Stick Welding/Arc Welding - Shielded Metal Arc Welding
Topic: Can a low 7018 exposure to moisture can problems?
Replies: 37
Views: 9655

Re: Can a low 7018 exposure to moisture can problems?

According to what I read about them they shouldn't even start. But if they passed a bend test I'm fine. What's the member's name? I would like to read some of his posts. What you've read is incorrect. They will pass a bend test because although welds made with improperly stored 7018 rods can have d...
by MinnesotaDave
Mon Feb 15, 2021 8:47 pm
Forum: Welding Forum General Shop Talk
Topic: Sandblasting at home
Replies: 2
Views: 1174

Re: Sandblasting at home

I've used similar units. They worked much better when I replaced the gun with an open 3/8" pipe nipple. I ran my 80 gallon upright and my engine drive air compressor together to put out enough air. (Sometimes I run 3 electric compressors instead) The gun and tips that come with it are way too s...
by MinnesotaDave
Fri Feb 12, 2021 11:06 pm
Forum: Stick Welding/Arc Welding - Shielded Metal Arc Welding
Topic: Can a low 7018 exposure to moisture can problems?
Replies: 37
Views: 9655

Re: Can a low 7018 exposure to moisture can problems?

For non-critical work, my opinion is yes. I use plenty of those. I should get a rod oven though. The basic cheapies are $100-$200 at WeldingForLess That's a nice price for the 50lb thermostat one. :) I put a meter on my similar 50lb oven and it used $6 per month. My 20lb unit just runs all the time...
by MinnesotaDave
Fri Feb 12, 2021 10:58 pm
Forum: Stick Welding/Arc Welding - Shielded Metal Arc Welding
Topic: Can a low 7018 exposure to moisture can problems?
Replies: 37
Views: 9655

Re: Can a low 7018 exposure to moisture can problems?

The low-hy aspect is exactly what produces strong, ductile welds. So no, because in this case it is essentially the same thing, for the actual practical purpose. That's a blanket statement that I would not make Oscar. "Strong" is not a well defined term, but ductility is. And although hyd...
by MinnesotaDave
Fri Feb 05, 2021 4:11 pm
Forum: Tig Welding - Tig Welding Aluminum - Tig Welding Techniques - Aluminum Tig Welding
Topic: A doubt regarding welding in planes
Replies: 7
Views: 1433

Re: A doubt regarding welding in planes

The first is clearly a spool gun, so mig weld it is.

The second has no slag developing right behind the weld. Mig weld.
by MinnesotaDave
Tue Feb 02, 2021 4:17 pm
Forum: Welding Forum General Shop Talk
Topic: Old-Timey Videos
Replies: 10
Views: 3716

Re: Old-Timey Videos

No video list should be complete without Mr. Shrink. :D

https://www.youtube.com/watch?v=2vuGlcbDwKY
by MinnesotaDave
Tue Feb 02, 2021 4:14 pm
Forum: Stick Welding/Arc Welding - Shielded Metal Arc Welding
Topic: Miller 330 A/BP - DCEP (Reverse Polarity) No Output
Replies: 6
Views: 4170

Re: Miller 330 A/BP - DCEP (Reverse Polarity) No Output

On those machines (and ones with similar contacts like my Bobcat 225nt) it's a good practice to move through the contacts every time you use it.

It's even in my Bobcat manual to do that. Keeps them from getting corroded I suppose.
by MinnesotaDave
Thu Jan 28, 2021 3:56 pm
Forum: Tig Welding - Tig Welding Aluminum - Tig Welding Techniques - Aluminum Tig Welding
Topic: Welding 1/2" to 1/16" Alum
Replies: 20
Views: 3761

Re: Welding 1/2" to 1/16" Alum

For what you are doing, thick-to-thin won't really be that bad.

Once joined, just keep heat to the thick side and the puddle will stay with you.

Add rod to keep joint filled and weld happy.

First time I did something like that was with my old 1963 tig. No balance adjustments, just weld it :D
by MinnesotaDave
Wed Dec 09, 2020 1:31 pm
Forum: Tig Welding - Tig Welding Aluminum - Tig Welding Techniques - Aluminum Tig Welding
Topic: the worst welds ever
Replies: 7
Views: 1893

Re: the worst welds ever

Just remember that "drying" 7018 rods is 650 to 750°F. The chemical bond must be broken, it's not really drying in the standard sense. Longer periods at lower temperatures is not equivalent according to Lincoln. I always thought rod ovens are overpriced as well. Likely just the economy of...
by MinnesotaDave
Mon Dec 07, 2020 12:49 pm
Forum: Tig Welding - Tig Welding Aluminum - Tig Welding Techniques - Aluminum Tig Welding
Topic: the worst welds ever
Replies: 7
Views: 1893

Re: the worst welds ever

Just remember that "drying" 7018 rods is 650 to 750°F. The chemical bond must be broken, it's not really drying in the standard sense. Longer periods at lower temperatures is not equivalent according to Lincoln. I always thought rod ovens are overpriced as well. Likely just the economy of ...
by MinnesotaDave
Fri Dec 04, 2020 3:15 pm
Forum: Tig Welding - Tig Welding Aluminum - Tig Welding Techniques - Aluminum Tig Welding
Topic: Lift arc set up off generator
Replies: 6
Views: 2542

Re: Lift arc set up off generator

Granddaddy wrote: I am a little embarrassed to ask but can someone explain what the chopper does?
I'm no authority on the subject, so here's Lincoln's explanation (page 4):

https://www.lincolnelectric.com/assets/ ... /nx130.pdf
by MinnesotaDave
Wed Dec 02, 2020 1:26 pm
Forum: Tig Welding - Tig Welding Aluminum - Tig Welding Techniques - Aluminum Tig Welding
Topic: NEVERLAST lied again!
Replies: 26
Views: 3834

Re: NEVERLAST lied again!

I mean, I feel for you, but at this point, all the positives and negatives of Everlast are well documented. Did you expect something to change this time around? Caveat emptor, as they say. Every once in a while I look at their machines, and the specs look great, super tempting. Some folks report go...
by MinnesotaDave
Wed Nov 25, 2020 11:08 pm
Forum: Tig Welding - Tig Welding Aluminum - Tig Welding Techniques - Aluminum Tig Welding
Topic: Lift arc set up off generator
Replies: 6
Views: 2542

Re: Lift arc set up off generator

The simplest setup is just a torch and cable, clip your stick stinger on the cable end and scratch start.

That's what I do on my miller bobcat 225nt. It doesn't have tig setting.
by MinnesotaDave
Sun Nov 22, 2020 3:22 pm
Forum: Tig Welding - Tig Welding Aluminum - Tig Welding Techniques - Aluminum Tig Welding
Topic: 330a/bp setup
Replies: 14
Views: 2954

Re: 330a/bp setup

No DC output, and a loud hum like the machine is working hard, are good indications of a bad rectifier.
by MinnesotaDave
Thu Nov 19, 2020 4:14 pm
Forum: Stick Welding/Arc Welding - Shielded Metal Arc Welding
Topic: Eutectic XHD 66 AC/DC +
Replies: 1
Views: 3084

Re: Eutectic XHD 66 AC/DC +

I've not used it, but it looks like a winner by the specs :)

https://www.castolin.com/en-US/product/ ... per-66-xhd
by MinnesotaDave
Fri Nov 06, 2020 1:45 pm
Forum: Stick Welding/Arc Welding - Shielded Metal Arc Welding
Topic: Is this start stop technique for thin sheet metal valid?
Replies: 3
Views: 1858

Re: Is this start stop technique for thin sheet metal valid?

It's a valid method for thin stuff. I've done it on thin farm sheet metal with 3/32" 6011.

I just overlapping tack-tack it together, grind a little to make sure it's clean, then weld it better as needed.

I wouldn't do this on anything structural naturally, just for thin stuff where needed.
by MinnesotaDave
Thu Nov 05, 2020 11:53 pm
Forum: Tig Welding - Tig Welding Aluminum - Tig Welding Techniques - Aluminum Tig Welding
Topic: Can you push aircooled torches?
Replies: 21
Views: 2543

Re: Can you push aircooled torches?

I think you'll really like the 17 size on steel.
I've melted a few 26 torches on AC for aluminum, but DC I've had better luck running too hot without melting down.
Then I made a water cooler system from a new-old-stock carbonator and now I love water cooled torches :D
by MinnesotaDave
Mon Jun 22, 2020 1:26 pm
Forum: Welding Forum General Shop Talk
Topic: Cleaning Mill Scale for TIG
Replies: 22
Views: 3820

Re: Cleaning Mill Scale for TIG

For anything small, I prefer my blast cabinet.
Very even finish and welds really nice :)
by MinnesotaDave
Sat Jun 20, 2020 2:33 am
Forum: Suggestions, Feedback and Support
Topic: WeldingWeb blackball automatic all fixed
Replies: 29
Views: 23346

Re: WeldingWeb blackball automatic

Nothing good EVER comes out of political threads, EVER. Perplexed as to why some choose to participate in such non-sense. While politics may be important in real-life, on forums it's literally useless. IMO Completely agree, I advise people to stay out of there. There is a little rhyme that goes: &q...
by MinnesotaDave
Sun May 17, 2020 1:36 pm
Forum: Stick Welding/Arc Welding - Shielded Metal Arc Welding
Topic: So is this article saying 300f will fully dry 7018?
Replies: 4
Views: 2024

Re: So is this article saying 300f will fully dry 7018?

I've had a long day so I' didn't quite study this whole arctical like I should've. But what jumped out at me was Table 4 . Am I misreading or misunderstanding, or is at least that artical and study suggesting that when a 7018 is moisture contaminated, be it left outside for long periods or even got...
by MinnesotaDave
Thu Apr 02, 2020 9:07 am
Forum: Mig and Flux Core - gas metal arc welding & flux cored arc welding
Topic: How to Hold Round Tube Against Square Tube at Angle?
Replies: 7
Views: 3507

Re: How to Hold Round Tube Against Square Tube at Angle?

If it has to be precise, I lay it on the table and get it where it needs to be.

If it doesn't, I just hold with one hand, tack with the other.
by MinnesotaDave
Wed Apr 01, 2020 8:35 am
Forum: Tig Welding - Tig Welding Aluminum - Tig Welding Techniques - Aluminum Tig Welding
Topic: TIG was working fine. Now this...
Replies: 9
Views: 1698

Re: TIG was working fine. Now this...

Torch assembled correctly?
My friend put his collet in backwards, no gas flow.
Tungsten stickout too long?
by MinnesotaDave
Sat Mar 21, 2020 1:21 pm
Forum: Welding Projects - Welding project Ideas - Welding project plans
Topic: Weld tester
Replies: 9
Views: 2776

Re: Weld tester

Here's some info from AWS D1.1 and a simplistic example of one.
guided bend test jig1.JPG
guided bend test jig1.JPG (65.19 KiB) Viewed 2551 times
guided bend test jig2.JPG
guided bend test jig2.JPG (33.3 KiB) Viewed 2551 times
guided bend test jig3.JPG
guided bend test jig3.JPG (34.99 KiB) Viewed 2551 times
Coupon bender guided bend test.jpg
Coupon bender guided bend test.jpg (38.73 KiB) Viewed 2551 times
by MinnesotaDave
Fri Mar 20, 2020 6:54 am
Forum: Tig Welding - Tig Welding Aluminum - Tig Welding Techniques - Aluminum Tig Welding
Topic: 1973 Miller 330 A/BP gas valve question
Replies: 4
Views: 1246

Re: 1973 Miller 330 A/BP gas valve question

Also check that the post flow timer is sending power to it.
In my case, it was a bad timer, solenoid was good.