DuraWeld

[TiggerToo]

Does anyone have any information/experience/views on these?

https://hyperowl.shop/products/super-melt-welding-rods

seem too good to be true!

 

[DinghyMan]

I seen a few write ups of similar products, muggyweld or something similar: https://www.muggyweld.com/

https://www.amazon.co.uk/Durafix-Aluminium-Welding-Easyweld-Brush/dp/B00GG09068/

https://www.amazon.co.uk/Muggy-Weld-Starter-Aluminum-Repair/dp/B016SZKVEA

https://www.ebay.co.uk/p/Muggy-Weld-Super-Alloy-5-Aluminum-Brazing-Rods-Starter-Kit-3-32/1974717865


OK for thin stuff but need a lot of heat and pre-heating for anything decent

From what I remember the chemistry is correct and the weld actually is a weld and is stronger than the surrounding metal, brush, heat, weld, stir weld area about a bit, etc..

Better to use a TIG but £2k Vs £10 is no contest

There seems to be loads of variations on the same theme available now: https://www.amazon.co.uk/KKmoon-Temperature-Aluminum-Welding-Soldering/dp/B07DS3P7Q8 - as it says heat the base material and use almost like a solder

Just remembered there is Lumiweld as well - I looked at a good few of these but went the TIG route

 

[anoccasionalyachtsman]

Yes, I've tried it on a broken weld on an alu alloy garden chair. Despite scrubbing like crazy with a clean stainless brush (vital to remove the oxide which forms almost instantly on raw alu) it just wouldn't 'wet' either surface. I've metioned it to others and nobody has made a repair that they'd trust. One of the Land Rover fanboy magazines tested it and couldn't repair a body panel decently with it, some bits of the join were OK, others not.

 

[Heckler]

Yes, I've tried it on a broken weld on an alu alloy garden chair. Despite scrubbing like crazy with a clean stainless brush (vital to remove the oxide which forms almost instantly on raw alu) it just wouldn't 'wet' either surface. I've metioned it to others and nobody has made a repair that they'd trust. One of the Land Rover fanboy magazines tested it and couldn't repair a body panel decently with it, some bits of the join were OK, others not.

Dont Landies have a weird alumimium mix? Berma metal or something? Contains magnesium?

 

[earlybird]

Dont Landies have a weird alumimium mix? Berma metal or something? Contains magnesium?

Birmabright, the parent company also made aluminium boats, (Birmal Boats), probably for the Birmingham Navy.

 

[anoccasionalyachtsman]

Dont Landies have a weird alumimium mix? Berma metal or something? Contains magnesium?

True, but nearly everything people will want to use this stuff on is an Aluminium alloy of some sort or other, and as far as I recall there's nothing in the sales guff or manual suggesting that it's only for 100% pure Alu.

 

[SvenH]

I have used durafix to fix a cracked off bit of my saildrive, where the bottom screw connects.

It was indeed hard to get enough heat in to it but it worked with my propane torch.
Since the repair in 2011 I noticed that the added material seems to be deteriorating.

It was suggested to me that the stuff contains zinc, so that may be a good reason.
Mind you, the boat lives on fresh water, it could be much worse on salt.

 

[vyv_cox]

I have used durafix to fix a cracked off bit of my saildrive, where the bottom screw connects.

It was indeed hard to get enough heat in to it but it worked with my propane torch.
Since the repair in 2011 I noticed that the added material seems to be deteriorating.

It was suggested to me that the stuff contains zinc, so that may be a good reason.
Mind you, the boat lives on fresh water, it could be much worse on salt.

Galvanic corrosion is always a likely problem with any form of brazing. The joint metal will inevitably have a different composition from the original, and therefore different galvanic potential. The fact that it may contain zinc is not a factor other than the potential difference of two discrete alloys. It helps to make the braze cathodic to the parent but that may be impossible or unknown.