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Building Tips and technical articles. => Paint and finishing => Topic started by: Perry Rose on February 12, 2020, 12:02:54 PM

Title: DC-540 primer.
Post by: Perry Rose on February 12, 2020, 12:02:54 PM
Have we decided on a replacement for DC-540? If so what is it?
Title: Re: DC-540 primer.
Post by: Avaiojet on February 12, 2020, 03:10:49 PM
Not cheap but great stuff. Keep in mind, I don't use dope over this.

https://www.eastwood.com/sem-high-build-primer-grey-16-oz-aerosol.html?SRCCODE=PLA00020&gclid=EAIaIQobChMI_ori3YLN5wIVzZyzCh0cyACmEAQYBCABEgJIT_D_BwE



Title: Re: DC-540 primer.
Post by: wwwarbird on February 12, 2020, 07:00:42 PM
Have we decided on a replacement for DC-540? If so what is it?

 Each time mine runs out I replace it with another can of DC540.  :)
Title: Re: DC-540 primer.
Post by: Dennis Toth on February 12, 2020, 08:19:40 PM
Ty is right, butyrate dope is not compatible over acrylic lacquer (see attached chart).

Best,   DennisT
Title: Re: DC-540 primer.
Post by: bill bischoff on February 13, 2020, 02:06:48 PM
Elsewhere on Stunt Hangar there was talk of Harbor Freight's spray can primer being a substitute for DC 540. After being thoroughly disgusted with my last can of DC 540, I bought some of the Harbor Freight primer. However, I haven't had good enough weather to use it yet.

I got to use some of it the other day. Seemed just like the good/old DC540 to me.

BB
Title: Re: DC-540 primer.
Post by: Paul Wood on February 13, 2020, 03:06:59 PM
Perry,

I use Dupli-Color high-build gray primer from the auto supply stores. It's lacquer based and I've used it over Minnwax Polycrylic (water based) with good results. Fills the sand paper pretty quickly, so I have better luck wet sanding. I use Windex to keep the sand paper clean. NOTE, I do not use dope, only lacquer or enamel for a top coat.

Paul
Title: Re: DC-540 primer.
Post by: Bootlegger on February 13, 2020, 05:31:32 PM

        Perry, I have a few cans if you want to come and get them...
Title: Re: DC-540 primer.
Post by: Al Ferraro on February 15, 2020, 06:18:24 PM
 I gave a can to Sparky to test and he loves it.  y1
Al