John, This the one I ordered:
https://www.walmart.com/ip/Markal-Lacquer-stik-White-Fill-in-Paint-for-Engravi/34783848 Apparently it is "long lasting", "stays flexible", "will not rub off", etc., etc. I'm not sure if I can mimic an engraving in a spare aluminum piece but might try with a thin hack-saw. Thanks for the reply, Barry - N4BUQ > Barry,Given you have a lacquer-stik, i would make some test applications of > that > material on a piece of aluminum or steel to first hand assess application, > adhesion, how hard it cures, the time needed, and specific chemical > resistance, > durability etc.I would also indicate if you are going to be using the "putty", > "crayon', or "paint" type of laquer-stick.I looked up the name and received > quite a large number of products on the market.Engravers crayon is the only > type I have applied to my engraved panel that I over achieved with a > thermally-fused electrostatically applied paint.I am interested in the > results. > John N3JKE > > Sent from AOL on Android > > On Tue, Jul 2, 2024 at 10:34, Barry Scott<[email protected]> wrote: > (Trying from the GMail page as the first attempt from my other email > account was undelivered.) > > I'm going to attempt to use a Lacquer-Stik(r) to fill in the engravings in > my R390. I've read where this product takes weeks/months to fully cure. > Does that sound correct? I don't mind waiting as I have a lot more stuff > to do for this radio but would just like to know what I'm getting into. > > I'd also be interested in its durability. I presume that once it fully > cures, it's probably fairly tough but I don't know. > > I tried using acrylic craft paint for one small area of engravings. That > was a complete failure. After letting it dry overnight, I literally washed > it off with soap and water and an old toothbrush! Not good. I think model > car/aircraft paint might work but it might be somewhat difficult to wipe > clean after application and it could be aggressive on the paint if there's > much residue. > > For prep, after wet-sanding the front panel down to the bare aluminum and > scraping out the engravings, I used Rust-Oleum self-etching automotive > primer followed with two light coats of Rust-Oleum satin enamel. I let > that cure in the hot sun for a couple of hours for two or three days in a > row which seemed to have a good hardening effect and reduced the > out-gassing quite a bit. Hopefully that will be durable. > > Thanks for any comments, > Barry - N4BUQ > ______________________________________________________________ > R-390 mailing list > Home: http://mailman.qth.net/mailman/listinfo/r-390 > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[email protected] > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > > ______________________________________________________________ > R-390 mailing list > Home: http://mailman.qth.net/mailman/listinfo/r-390 > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[email protected] > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html ______________________________________________________________ R-390 mailing list Home: http://mailman.qth.net/mailman/listinfo/r-390 Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
