To be honest, I hardly prep cold rolled at all. The scale is usually trivial enough to get dealt with by the additives in the fill rod and they are almost always going to get painted over anyway. Pictures would probably help but that sounds like a shielding issue. What are you using as a flow rate a...

I'm making a home-brew cooler and was just going to use water wetter. Much better heat transfer than antifreeze and I don't really expect to ever have it hit the freezing point so all I really want is corrosion and biological inhibition. http://www.amazon.com/Red-Line-80204-Water-Wetter/dp/B000CPI5Z...

Maybe other suppliers are different but my Airgas rep tells me they only refine one grade (research I think) and then they sell it for different prices depending on the label.

-Sandow

What you have planned sounds pretty good. The only thing I'd add is that drilling through the end of the crack is the only real way to stop it from propagating. In addition to notching it out, you might as well run a cutoff wheel down the crack too. The 1/16" gap will make life easier in the en...

Well, as far as molecule size goes, there should be no real difference in the behaviors between a super light and a super heavy gas. Now that is the ideal, not necessarily the reality. It is usually pretty close though and when you look at the flow rate constant between argon and helium, they are bo...

My instinct is that the Ideal Gas Law is going to be a harsh mistress here and you are going to run into issues with actual volume of gas vs the way the gas flow rate is measured. I would guess on a floating ball type flowmeter, the mass of the gas changes the reading dramatically even at the same f...

LOL! I just got the metal in to make a SS grill top. Buying the stock was absurdly priced so I'll actually be using 1/8" fill rods. Was going to clamp them to a copper plate and then hit them hard and fast. Did you settle on an approach that you felt worked well? -Sandow Edit: I tried it out a ...

A 9 is probably fine but adjustable auto darkening helmets are pretty cheap these days. The darkness of the shade makes no difference for UV emissions which is what causes real damage, even a clear plastic lens will block all of it. Darkness of the shade is just to keep your receptors from bleaching...

I emailed the company, but no response with this question (hope I'm in the right forum): The main amps dial setting and digital readout are way off----like 50 amps. I'm thinking I should go by the digital, but not sure. Have any of yoos guys had an issue like this with this machine? This is my firs...

IMG_1266.jpeg IMG_7124.jpeg So I saw this thread and had to give it a run. Had my brother print it out and it is curing in the sun now. Looks good though :) The lithographic printers do so much better of a job with the holes than the deposition printers. I wont know how well they really fit until i...

http://i157.photobucket.com/albums/t78/quadrod426/IMG_0999_zpsfa41degb.jpg The upper bead, started run with no filler rod and then started again with recently purchased 4043 1/16 rod. 1/16 fill rod is probably too thin for what you are welding which looks like 1/8". If you don't have any 3/32 ...

Poland308 wrote:Awsome lay out tool does it do more than one size of pipe?

No. They make them in a few common sizes though.

http://www.pipemastertools.com/viewall.html

Can you show us the tungsten after welding and the weld itself?

-Sandow

Looking good BigD. Did you do plinth boxes or drop the main hoop bars through the floor? -Sandow Thanks! Neither, I did it the hard way. I had a friend weld in the rollbar for me before I knew how to weld. The car has been getting crazier and crazier and I'm no longer comfortable tracking it withou...

Well, the vinegar and peroxide vapors may result in a clean spot amongst the chili splatters but if you can live with the "patina" being damaged it should be fine. The end product is copper acetate which is terrible for you if you are a fish but is mostly harmless if you are human... -Sandow

image.jpeg So for probably less than a penny each, you can electroplate copper onto the screens. It doesn't make them splatterproof but not much sticks to them so you at least double their life. I've been welding on a rusted 62 continental and was trashing them all the time since there are hidden p...

Looking good BigD. Did you do plinth boxes or drop the main hoop bars through the floor?

-Sandow

No.

You can weld it together and it will look fine. It will have zero strength though and any jolt will break the weld. Given what it is, It is probably worth welding in magnesium with an appropriate fill rod.

https://www.youtube.com/watch?v=ElT5qmUyagU

-Sandow

You are going to find that welding brass sucks as soon as you try it. Brass is copper/zinc so it will blow off zinc fumes when it gets hot so wear as respirator and don't melt the base metal. It will never be pretty but if you are just filling pits, you should be fine. https://www.youtube.com/watch?...

The comments about back purging certainly have merit. If the outside looks grey, the inside may well be sugared. It is worth taking a look if you are going to be putting liquids through it. My guess at the overall problem would be insufficient shielding and too long of a welding time. A jumbo gas le...

What do you think the base metals are and what filler rod are you using?

-Sandow

I remember a lot of people in my class having issues with that as well. I think more than anything it was the people that couldn't see what was going on well that were inconsistent. If you are using one of the beat up class helmets, that is probably 90% of your problem. If visualizing the weld puddl...

I've had little luck with nickel 99, a bit better with bronze. Yet to try this stuff I but I hear good things about it around the track.

http://www.amazon.com/Ez-Weld-Tig-Wire/ ... d+tig+wire

-Sandow

Delayed repeat post.