noddybrian wrote:+1 glad he's going - this forum is usually so friendly.

+2

It's unfortunate that the Forum's manage " Friends and Foes " setting does not seem to have the " Foes " option enabled.........

Just remember to use muriatic acid outside, and where fumes can't drift into the shop.

Otherwise all machinery and bare steel acquires a brown coating.

Use a suitable epoxy filler, such as one of these from Devcon.

https://itwperformancepolymers.com/products/devcon

Then you wont have the problem of chips/swarf in the recess damaging the wipers.

Is the problem common to both machines ? Try another bottle of gas from a different source ? Is the porosity problem common to every casting from the new process or intermittent ? Can you get a mass spectrometry analysis of the chips you grind off the casting to check the cast material is to the cor...

Duplicate

DC negative TIG and helium is still the go to method for a sound weld and eliminating eliminating distortion in repairing aluminum engine blocks and other repairs and heavy fabrications. https://weldingweb.com/showthread.php?616441-Is-it-possible-to-weld-aluminum-with-a-DC-tig&s=7540fba4538e87d8...

That would have been a good day to go buy a lottery ticket ............or three.

In the event of no other options, these outfits may be worth contacting ; http://www.deltair-aerospace.co.uk/engine-repair-overhaul/gipsy-engines http://www.formhalls.com/801.html http://www.retrotec-ltd.co.uk/services/ Or the engineering dept here ; http://www.shuttleworth.org/

Have you used the problem tungsten brand on another machine without problems ? If you haven't already, try another brand or type of tungsten ; e.g 2% thoriated. https://www.thefabricator.com/article/aluminumwelding/choosing-tungsten-electrode-type-size-for-aluminum-gtaw " So what electrode shou...

https://newatlas.com/welding-aa7075-alu ... loy/58449/

A very interesting development.

It's aluminum bronze, see the lower photo. Now you have a real nice, non-sparking hammer. They don't make them like that any more............. http://ampcosafetytools.thomasnet.com/category/hammers Yup, aluminum bronze, not copper. I saw the ALBR on the side, and still thought brass. My mistake. St...

It's aluminum bronze, see the lower photo.

Now you have a real nice, non-sparking hammer. They don't make them like that any more.............

http://ampcosafetytools.thomasnet.com/category/hammers

Coldman wrote:Piece of piss for a trained digger.

Sent from my POCOPHONE F1 using Tapatalk

This pic should be good guidance for those who are considering what breed of auto helmet to buy.

duplicate

No temperatures are mentioned in post #4 , but there is a PDF link to the paper. https://forum.millerwelds.com/forum/welding-discussions/26373-inconel-to-stainless " 07-20-2011, 05:33 PM We use 625 at my work welding carbon to stainless boiler tube. They stopped using 309 years ago and haven't ...

This might help you in selecting.

https://www.hobartbrothers.com/download ... i_1lOo.pdf

If you can find someone with a 48" manual shear ( Tennsmith, Jet, etc ) they could cut you 1/16" strips from your material.

For squaring tube, etc, it's hard to go past a pedestal mounted disc sander ( 16" and up ) of this style ; https://www.baileigh.com/heavy-duty-disc-grinder-dg-500hd The earlier ( 20th century ) US made models are the ultimate if you could find one. Agreed, but interesting that one, for the pri...

For squaring tube, etc, it's hard to go past a pedestal mounted disc sander ( 16" and up ) of this style ;

https://www.baileigh.com/heavy-duty-dis ... r-dg-500hd

The earlier ( 20th century ) US made models are the ultimate if you could find one.

347 has always been the filler material used to build 321 exhaust systems for race cars.

http://corp.burnsstainless.com/componen ... ld-quality

http://corp.burnsstainless.com/technica ... l-overview

On the balance I have tried going up that high and it got worse. I forgot to add earlier that the tungsten was soot black after any tack or weld above a balance or 10 or 12. I have also gone as low as 10 on the balance and it was a little better (no porosity and the tungsten was not as black it had...

How about using aluminum sandwich patches, top and bottom, secured with closed end blind aluminum rivets ; https://rivetsinstock.com/rivets/blind-rivets/closed-end-blind-rivets.html and a good one part structural epoxy , similar to Delo Monopox 1196 ? https://www.delo-adhesives.com/us/downloads/ Gri...

Quite right, Tweake. It is very possible the guy has no one from whom to learn, may not have resources locally, or is simply the type of person who asks rudimentary questions because he has no experience. FFS, if you don't care to respond constructively, then move along and don't engage in the thre...

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Don't teach yourself how to weld. You'll only teach yourself bad habits.Enter a course The need to ask this very question is absurd. Put down your iPhone and go do some reading your crap attitude just pisses me off :evil: i would rather have them ask a stupid question than not to ask at all. not ev...