Model Boat Mayhem - Forum

Technical, Techniques, Hints, and Tips => Painting, Finishing and Care. => Topic started by: Popeye on September 03, 2012, 11:17:36 PM

Title: Brass etching primer
Post by: Popeye on September 03, 2012, 11:17:36 PM
Can anyone recommend an etching primer for use on brass which can be oversprayed successfully with Halfords'  etc., acrylic spray paints?

Brush applied primer would be preferable - lots of small fitments to treat at different stages of model construction - failing which spray can application would have to suffice.

Thanks in anticipation of any positive responses.
Title: Re: Brass etching primer
Post by: Stavros on September 03, 2012, 11:31:32 PM
Halfords sell an ACID etch primer which would do the job for you



http://www.halfords.com/webapp/wcs/stores/servlet/product_storeId_10001_catalogId_10151_productId_170745_langId_-1_categoryId_165625


Dave
Title: Re: Brass etching primer
Post by: pettyofficernick on September 04, 2012, 12:17:55 AM
Hi there, This is pretty good stuff, I have just used it to prime my TVR1A steam engine, gives a nice dense coat on which to paint.

http://www.ebay.co.uk/itm/Primer-Beige-Bare-Metal-Primer-Aerosol-High-Build-Acid-8-Times-Faster-Dry-Etch-/180958358108?pt=UK_Body_Shop_Supplies_Paint&hash=item2a21f56a5c

Regards,
Nick. :-)) :-)) :-))
Title: Re: Brass etching primer
Post by: Stavros on September 04, 2012, 01:07:06 AM
Baisically same stuff but a lot cheaper and from a good ebayer as welll


Dave
Title: Re: Brass etching primer
Post by: unbuiltnautilus on September 04, 2012, 01:12:58 PM
Halfords sell an ACID etch primer which would do the job for you





http://www.halfords.com/webapp/wcs/stores/servlet/product_storeId_10001_catalogId_10151_productId_170745_langId_-1_categoryId_165625


Dave

Good stuff, have used it on the nylon components of the rotor head on a RC Helicopter prior to painting a metallic effect onto it. It stuck to that so should work on most materials..
Title: Re: Brass etching primer
Post by: essex2visuvesi on September 25, 2012, 11:02:21 AM
The U-Pol Acid 8 stuff works great on brass components, does stink a bit tho

Also you guys are lucky... the same stuff was 33 a can here in finland
Title: Re: Brass etching primer
Post by: Subculture on September 25, 2012, 12:50:32 PM
You can purchase etch primer in cans for brush painting. However if this is just for small components, I just dip them in some ferric chloride (PCB etchant) for a little while, wash them off, then prime them with any conventional primer, and that works fine. The etchant does the same thing by roughening the surface with milions of microscopic pits, providing something for the paint to grip onto.

You can purchase ferric chloride in Maplins or from Rapid online.
Title: Re: Brass etching primer
Post by: mrsgoggins on September 26, 2012, 08:00:32 AM
Precision Paints single pack primer works OK for me but has a limited shelf life which is a pain when you only use small amounts. I shall note the info given on this thread.