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RAL 5228


Bigj66

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Reason being is that the front panel has gone off for blasting and powder coating and I have the option to have the powder coating as just a primer or, with the top coat too if I can provide them with the RAL colour. I’ve seen the LR colour reference but also this 5228 RAL number:

https://www.carpentergoodwin.co.uk/Products/Tractor-Paints-Vapormatic-and-Kramp/522812KR

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Take a sample panel, with the paint you are trying to match, to a decent autopaint specialist and ask f they could scan it. Their computer should be able to come up with the closest match RAL colour. I've just done this with a valve amplifier that I've refurbished and the outcome was a match to the original which will take a lot of study to spot any difference.

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Powder coat is an awful thing for vehicles - it chips and the rust spreads underneath, but it’s a pig to sand back and repair.  A decent rust preventative primer and decent quality paint are a much better solution.

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The modern epoxy paints have a good reputation for undercoat. Zinc rich, incredible adhesion on media blasted panels.

Oil rig grade stuff.

Joton 90 barrier is one such.

They need top coat though, as the finished appearance isn't UV stable.

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45 minutes ago, Snagger said:

Powder coat is an awful thing for vehicles - it chips and the rust spreads underneath, but it’s a pig to sand back and repair.  A decent rust preventative primer and decent quality paint are a much better solution.

It’s just something I’m looking into at the moment for the front panel as it’s getting blasted and I don’t want it being left unprotected between the time it’s finished and I can get it home for a coat of primer. If you handle powder coated items with care they’re usually ok.

However, I don’t want to take the chance of a colour mismatch between any colour coat applied by them and the rest that I will apply myself either, so I’ll probably just ask them to apply a primer coat after it’s been taken back to bare metal and finish it myself.

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Do they do hot zinc spray? It's a reasonable alternative. I think it needs an epoxy on top but it would hold the rust away.

For information this front panel was blasted 2 years ago and stored in a dry workshop ever since.

IMG_20200726_174250.jpg

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3 hours ago, Romahomepete said:

Unless you are painting the whole vehicle when buying paint by ref no is OK you are better having an existing panel scanned and the paint matched to that as the paint will already have faded.

 

Peter

I’m probably not going to be matching any existing panels as most are going to need a repair here and there or a new panel entirely so I’ll be back to bare metal anyway.

A matt finish of the marine blue would be what I’m aiming for so I will probably need to get that mixed as a batch.

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On 8/12/2020 at 7:28 AM, Snagger said:

Powder coat is an awful thing for vehicles - it chips and the rust spreads underneath, but it’s a pig to sand back and repair.  A decent rust preventative primer and decent quality paint are a much better solution.

Only if its done poorly. Done right it doesn't spread underneath as it will be zinc primed. 

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