|R Johns||27/10/2021 18:25:50|
|41 forum posts|
Greetings. I need some advice on etching primer for brass.
I have a spray can from autotek. The back of the can states galvanised steel also suitable for aluminium.
Do I need a different formula for brass? Does anyone have experience as internet searches are inconclusive.
21613 forum posts
I tend to use U-pol's Acid 8 when spraying with a can. Halfords do it . Not used the Autotek
|Jon Lawes||27/10/2021 20:34:16|
688 forum posts
I tend to use U-Pol Acid 8 for everything as well. It's really rather good. Used it on my locomotive, which was all brass. In the areas that got chipped in transit I touched up without using the primer and it really didn't adhere as well.
|R Johns||27/10/2021 20:37:10|
|41 forum posts|
Many thanks for the replies.
I see this U-pol stuff is widely available as well. Pointless gambling on the one I have and having to clean everything up.
|Martin King 2||27/10/2021 21:12:19|
|881 forum posts|
I have used the Autotek grey etching primer for a long while now and find it to be excellent, mainly on alloy and steel but also some small brass items.
|Michael Callaghan||28/10/2021 10:36:35|
|16 forum posts|
Before spraying make sure that the brass is totally clean. I have also found it helps lightly going over the surface with a scotch pad to key the surface. Acid 8 works ok.
|duncan webster||30/10/2021 18:15:17|
|3581 forum posts|
I seem to recollect that the bumph sheet which comes with Precision Paints primer claims that primer meant for aluminium doesn't have enough acid to work on brass. This might be a case of 'they would say that wouldn't they', and I have little experience either way. I also recollect that the 'how not to paint a loco' book says Acid 8 is OK. My attempts at painting are best described as spreading it around with a hairy stick
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