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Garry Coles25/01/2020 10:36:49
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62 forum posts

Hi, I'm going to be priming some of the parts of my 2 in scale D & NY Traction Engine that i'm building. Some of the sheet steel plate has a grey finish to it, and is very hard to get off. I was wondering if this has to be removed before I prime. (The primer I am using is Phoenix Precision 2 pack etch primer.) It seems to be part of the protection for the steel plate when it comes out of the foundry. Can anyone advise me please.

Garry

vintage engineer25/01/2020 11:07:37
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247 forum posts
1 photos

Sounds like zinctec steel.

Garry Coles25/01/2020 11:21:25
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62 forum posts

No, it's just ordinary sheet steel that EKP supplies. No zinc involved.

Jeff Dayman25/01/2020 14:09:07
1789 forum posts
45 photos

Might be wise to ask EKP what it is, to make sure the paint you use is compatible. Just food for thought.

Neil Wyatt25/01/2020 14:26:41
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Posted by Garry Coles on 25/01/2020 10:36:49:

Hi, I'm going to be priming some of the parts of my 2 in scale D & NY Traction Engine that i'm building. Some of the sheet steel plate has a grey finish to it, and is very hard to get off. I was wondering if this has to be removed before I prime. (The primer I am using is Phoenix Precision 2 pack etch primer.) It seems to be part of the protection for the steel plate when it comes out of the foundry. Can anyone advise me please.

Garry

If it is standard rolled steel plate it is just an oxide film that can be left, or you can get it off with brick cleaner.

Neil

JasonB25/01/2020 16:08:22
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17822 forum posts
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Yes as Neil says just a thin mill scale, probably a bit of S275 steel. If I'm doing a lot of work on a part I will strip it off with brick cleaner(acid) first if not just leave it on as it adds a bit of texture which often siuts teh fabricated "castings" that I make.

Garry Coles26/01/2020 07:40:23
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62 forum posts

Thanks everyone.

Derek Allum26/01/2020 09:16:40
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35 forum posts
13 photos

Hi

you don’t have to etch steel as today’s primers have very good bonding to steel .

Dell

Speedy Builder504/04/2020 09:55:00
1979 forum posts
139 photos

What paint do you use for your Steam Locomotive and who supplies it?

Garry Coles06/04/2020 07:49:11
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62 forum posts

Hi there Speedy. Here is the paints I've been using.

Phoenix Precision Paints.

2 part etch primer PQ31 & PQ32.

Pre paint metal cleaner PQ17

This gives a lovely smooth hard surface.

Yourspraypaints.com

Loads of colours and finishes to choose from, and then they fill the spray cans for you.

Hope this is of some help for you.

Garry

bernard towers08/04/2020 23:50:59
12 forum posts
43 photos

If the parts to be primed are steel why are you using etch primer. Etch primer has been specifically designed for hard to bond materials and steel is not one of them. Much better to use a zinc chromate.

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