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UK diy (uk.d-i-y) For the discussion of all topics related to diy (do-it-yourself) in the UK. All levels of experience and proficency are welcome to join in to ask questions or offer solutions. |
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#1
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Painting Anodized Aluminium
There is an aluminium extrusion that I want to use for an LED strip
light. But, it is anodized and I want it painted the same colour as the wall. It will be inside and 8ft above ground so well out of the way of any knocks or wear. What preparation would I have to do to allow it to take Vinyl Matt paint? |
#2
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Painting Anodized Aluminium
On Mon, 20 Jul 2020 10:49:38 +0100, Andrew
wrote: There is an aluminium extrusion that I want to use for an LED strip light. But, it is anodized and I want it painted the same colour as the wall. It will be inside and 8ft above ground so well out of the way of any knocks or wear. What preparation would I have to do to allow it to take Vinyl Matt paint? Maybe just some acid-etch primer? Cheers, T i m |
#3
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Painting Anodized Aluminium
On Monday, 20 July 2020 10:49:42 UTC+1, Andrew wrote:
There is an aluminium extrusion that I want to use for an LED strip light. But, it is anodized and I want it painted the same colour as the wall. It will be inside and 8ft above ground so well out of the way of any knocks or wear. What preparation would I have to do to allow it to take Vinyl Matt paint? I'd try just cleaning it and painting. Remember, the surface of aluminium is actually aluminium oxide - and with anodised, it is a just thicker layer. Any attempt to use acid or similar will either do nothing or affect the anodised layer. See how it goes on a bit of kitchen foil? The fitting will almost certainly be better. |
#4
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Painting Anodized Aluminium
On Monday, 20 July 2020 10:49:42 UTC+1, Andrew wrote:
There is an aluminium extrusion that I want to use for an LED strip light. But, it is anodized and I want it painted the same colour as the wall. It will be inside and 8ft above ground so well out of the way of any knocks or wear. What preparation would I have to do to allow it to take Vinyl Matt paint? Depends how it is sealed most cheap stuff will have a lacquer type finish more exotic is teflon, neither of which are good bases for paint. A rub down with fine wet & dry will remove the top surface but take care the oxide layer is only microns thick and it is easy to rub down to the base metal. Then again if you are painting that may not matter too much. Richard |
#5
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Painting Anodized Aluminium
On 20/07/2020 11:41, Tricky Dicky wrote:
On Monday, 20 July 2020 10:49:42 UTC+1, Andrew wrote: There is an aluminium extrusion that I want to use for an LED strip light. But, it is anodized and I want it painted the same colour as the wall. It will be inside and 8ft above ground so well out of the way of any knocks or wear. What preparation would I have to do to allow it to take Vinyl Matt paint? Depends how it is sealed most cheap stuff will have a lacquer type finish more exotic is teflon, neither of which are good bases for paint. A rub down with fine wet & dry will remove the top surface but take care the oxide layer is only microns thick and it is easy to rub down to the base metal. Then again if you are painting that may not matter too much. Richard +1. Just wash and try a bit and see, if it doesn't wet properly then fine steel wool and if that does not work, wet and dry. |
#6
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Painting Anodized Aluminium
On 20/07/2020 12:24, newshound wrote:
On 20/07/2020 11:41, Tricky Dicky wrote: On Monday, 20 July 2020 10:49:42 UTC+1, AndrewÂ* wrote: There is an aluminium extrusion that I want to use for an LED strip light. But, it is anodized and I want it painted the same colour as the wall. It will be inside and 8ft above ground so well out of the way of any knocks or wear. What preparation would I have to do to allow it to take Vinyl Matt paint? Depends how it is sealed most cheap stuff will have a lacquer type finish more exotic is teflon, neither of which are good bases for paint. A rub down with fine wet & dry will remove the top surface but take care the oxide layer is only microns thick and it is easy to rub down to the base metal. Then again if you are painting that may not matter too much. Richard +1. Just wash and try a bit and see, if it doesn't wet properly then fine steel wool and if that does not work, wet and dry. That does seem to be the way forward. I have a short sample that I will experiment on first and report back. |
#7
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Painting Anodized Aluminium
On Mon, 20 Jul 2020 12:24:12 +0100, newshound wrote:
+1. Just wash and try a bit and see, if it doesn't wet properly then fine steel wool and if that does not work, wet and dry. I wouldn't use steel wool, tiny bits will get lodged in the soft ally and rust these will show through emulsion in time. Wet & dry will be OK. -- Cheers Dave. |
#8
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Painting Anodized Aluminium
Definitely etch primer as otherwise although anodised surfaces can be
painted, it tends to pull of like a film or bubble if you do not create some way for it to grip. I know I tried to paint one with a can of car paint, some mat black and also emulsion and none was very useful. Brian -- ----- -- This newsgroup posting comes to you directly from... The Sofa of Brian Gaff... Blind user, so no pictures please Note this Signature is meaningless.! "T i m" wrote in message ... On Mon, 20 Jul 2020 10:49:38 +0100, Andrew wrote: There is an aluminium extrusion that I want to use for an LED strip light. But, it is anodized and I want it painted the same colour as the wall. It will be inside and 8ft above ground so well out of the way of any knocks or wear. What preparation would I have to do to allow it to take Vinyl Matt paint? Maybe just some acid-etch primer? Cheers, T i m |
#10
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Painting Anodized Aluminium
On 20/07/2020 10:49, Andrew wrote:
There is an aluminium extrusion that I want to use for an LED strip light. But, it is anodized and I want it painted the same colour as the wall. It will be inside and 8ft above ground so well out of the way of any knocks or wear. What preparation would I have to do to allow it to take Vinyl Matt paint? You could paper it first. Use self-adhesive brown paper tape, perhaps. -- Cheers Clive |
#11
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Painting Anodized Aluminium
On Monday, 20 July 2020 13:22:52 UTC+1, Dave Liquorice wrote:
On Mon, 20 Jul 2020 12:24:12 +0100, newshound wrote: +1. Just wash and try a bit and see, if it doesn't wet properly then fine steel wool and if that does not work, wet and dry. I wouldn't use steel wool, tiny bits will get lodged in the soft ally and rust these will show through emulsion in time. Wet & dry will be OK. Iron + Ali + water = ali corrosion. Be cautious of mixing the 2. |
#12
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Painting Anodized Aluminium
On 20/07/2020 10:49, Andrew wrote:
There is an aluminium extrusion that I want to use for an LED strip light. But, it is anodized and I want it painted the same colour as the wall. It will be inside and 8ft above ground so well out of the way of any knocks or wear. What preparation would I have to do to allow it to take Vinyl Matt paint? oxide layer - anodising - takes pain pretty well, but you probably want to use something like a car spray undercoat on it first. Or even an 'acid etch' primer -- "Women actually are capable of being far more than the feminists will let them." |
#13
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Painting Anodized Aluminium
Andrew Wrote in message:
There is an aluminium extrusion that I want to use for an LED strip light. But, it is anodized and I want it painted the same colour as the wall. It will be inside and 8ft above ground so well out of the way of any knocks or wear. What preparation would I have to do to allow it to take Vinyl Matt paint? some sort of universal metal primer? Or just try it? Degrease first.... -- Jimk ----Android NewsGroup Reader---- http://usenet.sinaapp.com/ |
#14
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Painting Anodized Aluminium
On 20/07/2020 13:22, Dave Liquorice wrote:
On Mon, 20 Jul 2020 12:24:12 +0100, newshound wrote: +1. Just wash and try a bit and see, if it doesn't wet properly then fine steel wool and if that does not work, wet and dry. I wouldn't use steel wool, tiny bits will get lodged in the soft ally and rust these will show through emulsion in time. Wet & dry will be OK. Interesting point. I was just thinking of something abrasive to get through any lacquer, not expecting to polish back through the anodised layer. I usually find steel wool more useful than wet and dry on "profiled" metal. I still think it would be OK for inside use, and therefore not going to get wet. |
#15
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Painting Anodized Aluminium
On Tue, 21 Jul 2020 18:15:07 +0100, newshound wrote:
I wouldn't use steel wool, tiny bits will get lodged in the soft ally and rust these will show through emulsion in time. Wet & dry will be OK. Interesting point. I was just thinking of something abrasive to get through any lacquer, not expecting to polish back through the anodised layer. I usually find steel wool more useful than wet and dry on "profiled" metal. I still think it would be OK for inside use, and therefore not going to get wet. Soft steel wool rusts, it takes the required moisture from the air. I'd also forgotten about the electrolytic corrosion that takes place between iron and ali. Just sayin' -- Cheers Dave. |
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