 | Home > Maintenance & Modifications > Filling in rivet holes |
 
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| CarMan Member Since: 29 Nov 2010 Location: Cotswolds Posts: 1862  
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+1 to that
 Rob
1993 200tdi 90 hard-top 1998 300tdi 90 soft-top 2016 2.2 XS 90 hard-top (sold) |
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27th Apr 2020 4:55pm |
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| Mo Murphy Member Since: 01 Jun 2008 Location: Letchworth Garden City, Herts Posts: 2244 
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I wouldn't put a gas torch anywhere near a skin panel, it will buckle.
Mo The Land Rover 90 - Many are called, few are chosen. 50 Shades of Pennine Grey |
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27th Apr 2020 6:32pm |
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| Dinnu Member Since: 24 Dec 2019 Location: Lija Posts: 3421  
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I have used with good results a product called Alumiweld. Very similar to the product in the videos. I used it to repair rivet holes, approx 5mm, in the rear tub.
Got some distortion in the aluminium, even though it is low heat, but the distortion could have came back from some panel beating done earlier to straighten an accident damage. The repair material is harder than the aluminum, but still can be filed. I just left the alumiweld just slightly proud, as still needed some body filler to get a smooth panel. At least i know that the filler will not absorb water from behind the panel or crack around the hole. I will try to find a pic of the repair and post it. I recently tried to repair an AC evaporator, but the oil inside was contaminating the joint and could not get a perfect seal. Pic added.  Click image to enlarge By the way, in the promotional video, the molten metal is on a horizontal surface. On a vertical surface, it was a bit more challenging. 1988 90 Hard Top, 19J Diesel Turbo, Shire Blue - Restoration ongoing 2012 90 CSW, 2.2TDCI, Santorini Black Last edited by Dinnu on 27th Apr 2020 7:31pm. Edited 2 times in total |
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27th Apr 2020 6:41pm |
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| Co1 Member Since: 19 Aug 2018 Location: North Yorkshire Posts: 3679 
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I’m toying with removing the RAI and want to remove the rivnuts on the wing. Will this method be too hot for this, and if so what else would the collective recommend?
Apologies to the OP for the thread hijack. |
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27th Apr 2020 7:21pm |
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| charcoal Member Since: 28 Jul 2014 Location: Hampshire Posts: 942 
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Actually come to think of it that may not look so bad with them painted over Mo. Was thinking recently Id get some new chequer plate to put on but actually that sounds a better idea
1999 Land Rover Defender 110 td5 station wagon
1998 Land Rover Defender 110 County Station Wagon ~ Sold 1995 Land Rover Defender 110 V8 Station Wagon ~ Sold 
1985 Land Rover 110 ex mod project Tithonus ~ Sold |
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27th Apr 2020 8:06pm |
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| Dinnu Member Since: 24 Dec 2019 Location: Lija Posts: 3421
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If you do 'spot' heat, the hot zone will expand, while the surrounding metal not, and you get a plastic deformation where you have the largest temperature gradient. Once the panel cools off, it would not return to the original shape. The trick is to not have a large gradient in temperature. So warming as large of an area as possible, and avoid large gradient in temperature.... gradually go to the required temperature where it is needed. This should avoid plastic deformation of the aluminium, and panel will regain original shape once cooled off. I did a lot of testing on scrap parts before taking the blow lamp to the 90 panel...and even then, I was very nervous. And yes, the rods I used is not really welding, but is more like soldering. Done shear tests on scrap metal, and they all sheared from the parent metal, and not from the 'weld', indicating good bond can be achieved. 1988 90 Hard Top, 19J Diesel Turbo, Shire Blue - Restoration ongoing 2012 90 CSW, 2.2TDCI, Santorini Black |
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28th Apr 2020 5:37am |
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| Mo Murphy Member Since: 01 Jun 2008 Location: Letchworth Garden City, Herts Posts: 2244
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That's cool but for most people with no experience and several holes in a relatively small area it will end in tears.
I say this as a metal finisher (I worked in the Vauxhall van plant in a previous life before joining the Ambulance service ), where we used an oxy-acetyline torch to pop small dings out of steel skin panels so that we could file them and for leading. Mo The Land Rover 90 - Many are called, few are chosen. 50 Shades of Pennine Grey |
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28th Apr 2020 8:29am |
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| TopQ1967 Member Since: 14 Feb 2012 Location: Veghel Posts: 236  
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I have used durafix or alike. It works well, but gets harder than the base metal and thus britle.
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7th May 2020 6:20pm |
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