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  #21  
Old 01-06-2019, 06:18 AM
Onorius Onorius is offline
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Quote:
Originally Posted by crystallographic View Post
Looking good.
For the "blows" - and they occur every now and then - clean the flux off and hammer/dolly the thick spots around the holes and the holes close up - then you can re-weld easily to finish the weld.
Your surface looks like your:
water is not clean
or
the flux is thin
or
your gas is a bit dirty.
Rough surface means some contamination, someplace. Welds should be smoooth.
thanks for suggestion
I'll use another water and use more flux. Gas has nothing to do because it is only from a supplier that I can get it.

Question: If I use too thick a layer of flux, what can happen?
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  #22  
Old 01-06-2019, 03:51 PM
crystallographic crystallographic is offline
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Quote:
Originally Posted by Onorius View Post
thanks for suggestion
I'll use another water and use more flux. Gas has nothing to do because it is only from a supplier that I can get it.

Question: If I use too thick a layer of flux, what can happen?

Aha - okay -
For my own investigations, I have pushed the limits of overfluxing the aluminum weld - and no bad happens. (Even duplicating some half-inch / 12mm wide Vignale welds on .063/1.5mm 1100alloy. For my resto work on bare metal old stuff I have to replace sections carefully, using original seams and copying the welds exactly, along with hammer and file marks. Silly stuff, I know.. but so much money in some of these old clunks )


Dirt on the top of the weld having also clean root side is specific to contamination from something affecting only the top side.... unwashed metal or dirty gas. Sometimes also water/flux. So try the water/flux change.
We offer a small screw-on gas filter/cannister for dirty fuel gas - and this has helped many gas welders across the US.
https://www.tinmantech.com/products/...lding-filters/
(We also offer two EUR/OZ fittings to adapt this into local systems, for those several countries.

Good LUCK!
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  #23  
Old 01-06-2019, 04:12 PM
touringgarage touringgarage is offline
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sorry for my bad english.

first a compliment to your ambition.
there are actually several ways to reach the destination.
important is exercise, exercise and exercise again.
you have very good craftsmanship and effort.
the discussions and various approaches are always exciting and instructive.
recommendation from me, always clean workpieces with alcohol.
grease on the material leads to errors.
next Step.
important, always clean stainless steel wire brush to remove the oxide. No ordinary steel brush.
always remove oxide at short intervals.
new oxide layer in a short time again.
no wind or drafts during welding.
mix powder with alcohol and not with water.
you will soon see great success and aluminum with flame welding no problem.
fact is, gas welding is the best for alloy. for my taste and experience is wig not good for thin sheet. with wig is all time cracks next the welding lines. i have learned alu welding in england and italy to the best specialists.
how is the same as with doctors.
questions 10 doctors and you get 10 different advice

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Last edited by Steve Hamilton; 01-07-2019 at 09:46 AM.
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  #24  
Old 01-06-2019, 04:22 PM
touringgarage touringgarage is offline
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Pics from Welding

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Last edited by galooph; 01-06-2019 at 05:01 PM.
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  #25  
Old 01-06-2019, 05:13 PM
Onorius Onorius is offline
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[QUOTE=touringgarage;152275]Pics from Welding


Verry nice welding, this are from Geoff Moss shop?
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  #26  
Old 01-06-2019, 05:25 PM
Onorius Onorius is offline
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Quote:
Originally Posted by touringgarage View Post
sorry for my bad english.

first a compliment to your ambition.
there are actually several ways to reach the destination.
important is exercise, exercise and exercise again.
you have very good craftsmanship and effort.
the discussions and various approaches are always exciting and instructive.
recommendation from me, always clean workpieces with alcohol.
grease on the material leads to errors.
next Step.
important, always clean stainless steel wire brush to remove the oxide. No ordinary steel brush.
always remove oxide at short intervals.
new oxide layer in a short time again.
no wind or drafts during welding.
mix powder with alcohol and not with water.
you will soon see great success and aluminum with flame welding no problem.
fact is, gas welding is the best for alloy. for my taste and experience is wig not good for thin sheet. with wig is all time cracks next the welding lines. i have learned alu welding in england and italy to the best specialists.
how is the same as with doctors.
questions 10 doctors and you get 10 different advice
Thank you very much for encouraging words and of course for suggestions, I will try to use the alcohol method to mix powder
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  #27  
Old 01-07-2019, 07:49 AM
Stretch Stretch is offline
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Nice to see some pictures at Geoff Moss' workshop. I spent some time there a while ago expanding my knowledge base. Geoff is a fantastic master of the English Wheel. Grumpy old bugger, but top English craftsmen tend to be

Geoff recommends using methylated spirits instead of water for his flux mix, and it seems to work well. Old Aston Martin trick apparently



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Last edited by Stretch; 01-08-2019 at 12:27 AM.
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  #28  
Old 01-07-2019, 12:39 PM
touringgarage touringgarage is offline
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Yes, Geoff is with Peter and Kent real one off the best in World.
I have a good and friendly Basic with him and i m learn much Tricks from him.
Work with Methylated Spirits and the Welding is run very much better.
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  #29  
Old 01-08-2019, 05:28 PM
Charlie Myres Charlie Myres is offline
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Quote:
Originally Posted by touringgarage View Post
Yes, Geoff is with Peter and Kent real one off the best in World.
I have a good and friendly Basic with him and i m learn much Tricks from him.
Work with Methylated Spirits and the Welding is run very much better.
I think you should add yourself to the list of one of the best in the World Bernhard!

Thank you for posting your tips on aluminium welding, it is the first time I have heard of using alcohol in the flux,

Cheers Charlie
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  #30  
Old 01-09-2019, 11:31 AM
touringgarage touringgarage is offline
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Many thanks.
Compliment Honors me very much.
In real is much Name very High End Specialists exist on all Continents and not here on this great Forum.
A good Example is Steve Hogue
BR
BP
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