advice on dent

romanrob said:

I've only used the engine oil method myself, but soap works too according to google... It's mainly about making sure you don't over-heat it, with the oil. No idea what the soap is meant to do (not convinced by what I read on google)

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guide to annealing ally
https://makeitfrommetal.com/how-to-...minum requires very,to soak through the metal.
and the soap goes brown at the right temp (quick answer)!

TIMROSS said:

ok treat me like a 4 year old,, what does it mean if its birmabrite do i use oil or soap

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tis an alloy of aluminium and magnesium.
see https://en.wikipedia.org/wiki/Birmabright
and you can use either!
Did you read the link I put up on annealing? It tells you about this and other ways of doing it!

romanrob said:

To make the birmabright more pliable you can paint it with some engine oil, and then heat it evenly/ gently with a blow torch until the oil has burnt off, which will make it soft and more pliable. Piece of plywood down the back, and bend/ hammer back to shape

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its not birmabright no 90 or110 ever was

Stanleysteamer said:

tis an alloy of aluminium and magnesium.
see https://en.wikipedia.org/wiki/Birmabright
and you can use either!
Did you read the link I put up on annealing? It tells you about this and other ways of doing it!

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Did you think of giving him time to read it , both your posts were #21 and #22 for crying out loud...

Cheers

jamesmartin said:

its not birmabright no 90 or110 ever was

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Never knew that, did that stop with the series then?

Stanleysteamer said:

Never knew that, did that stop with the series then?

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last series were aluminum,sometime in the 70s they switched,hence the greater rot in the bodies

Apparently the manufacturer Birmetals collapsed in 1979 - last vehicles went out in 1980. I had a 1980 S3

romanrob said:

Apparently the manufacturer Birmetals collapsed in 1979 - last vehicles went out in 1980. I had a 1980 S3

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Yeah in the meanwhile, not having noticed these two posts I did a search and found this
http://funrover.com/history/defender-body-panels-are-not-birmabright/
Interesting that others have tried to replicate it and failed. can't imagine why.

Tim4x4 said:

It's not Birmingham brite alloy it's Birmabrite. Soap melts at 140F alloy aneals at approx 750F
Tim

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Bir Metals developed the alloy ... Bir metals, as in BIRmingham metals - hence ....

All here:-

https://en.wikipedia.org/wiki/Birmabright

Also, I didn't mention soap melting .... I said burns - as mentioned in other later posts Soap going black indicates the correct temp for annealing alluminium alloy.

Why would you want to heat that up? All thats going to do is burn the paint off.

Ok chaps. I am now confused Does it help to heat up the skin on a 2005 defender to help get a dent out

nobber said:

Why would you want to heat that up? All thats going to do is burn the paint off.

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Indeed. Not what I would be doing either.

TIMROSS said:

Ok chaps. I am now confused Does it help to heat up the skin on a 2005 defender to help get a dent out

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Yes, but, it'll burn all the paint off - you have to decide which route to follow ... I'd be trying to get it all back in shape with the minimum of force, take your time, and do as little damage to the paint as possible.

If that fails then you might have to anneal, shrink the required areas, anneal again - and repeat as required ....then you get to paint it...

Just bash it.

The puppy is going in for a full respray so the paint burning off shouldn’t be an issue

but I will try the gentle touch first hahahhaaa

TIMROSS said:

The puppy is going in for a full respray so the paint burning off shouldn’t be an issue

but I will try the gentle touch first hahahhaaa

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timross.
I have spoken to friendly bodywork person who says "from the photograph it appears to him that it is possible to complete an effective repair on the damage shown without annealing the material first" he went on to say that the amount of material in the area would rob the heat so major dismantling would be required to be able to anneal the affected area properly. So in his opinion again his words" just tease the material back to shape by cold working" he would use hydraulic pushers and limit the hammering.
Tim

Disco1BFG said:

Bir Metals developed the alloy ... Bir metals, as in BIRmingham metals - hence ....

All here:-

https://en.wikipedia.org/wiki/Birmabright

Also, I didn't mention soap melting .... I said burns - as mentioned in other later posts Soap going black indicates the correct temp for annealing alluminium alloy.

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A company named Birmingham metals was located in the Smethwick area but had nothing to do with Birmid.
Birmid came about by the joining of two companies BIRmingham aluminium castings and MIDland Motor Cylinder Co Ltd this was long before Birmid started the company Birmetals.
So Birmetals who manufactured birmabrite comes from Birmid metals not Birmingham metals.

Also James Martin is correct in this statements of no 90 or 110 are made with Birmabrite from the factory. Also the last series were not Birmabrite bodies Land Rover had lost confidence in Birmetals to supply consistent quantities of sheet Birmabrite so looked for an alternative supply.

The repair that TIMROSS wants to complete is of a vertical face if soap melts at 140F will it still be on the face of the dented material when it reaches its annealing temperature of 770F if it does I stand corrected.
A much more accurate indicator would be temperature indicating paint manufactured for the task such as:-
https://www.mcmaster.com/temperature-indicating-paint/temperature-points~750degreesf/

Tim