I am restoring a 70ish PU board. i am putting a yellow hot coat on the bottom and it turned out like swiss cheese-help direct me to a fix,please!
i really sanded off the gloss and some of the old hot coat. Next, I cleaned with denatured alcohol and let dry for a day. Finally clean up with light roll of the sticky tape…Then mixed the PU white to make it opaque and then mixed in my yellow; no waxing agent. it went down perfect. Brushed lengthwise, crosswise, lengthwise. Baby sat for 20 mins until the resin in the pot was hardening. Came back 3 hours later and the coat looks like swiss cheese:( Now, how to fix. Do want to sand cause no waxing agent. Can I just mix up another batch and try to fill in the dimples?
Howzit Kokua…you may be old but I ain’t. They say 62 is the new 32. Anyway…I would go ahead and try to flow another coat on. It may or may not work. Either way it will make it easier to sand off (if you have to) sanding unwaxed lam resin is pretty hard to do. The good thing is that it’s all fixable so keep your head up.
It won’t flow out unless you add wax. Opaque resin color used on a sanded finish is usually waxed resin with pigment added. After this dries you sand or scuff with scotchbright and gloss with clear gloss resin. The clear gloss allows you to wetsand and polish without burning through the underlying resin color. Old school technology.
Gotcha, so what do I do from here? Mix up another batch with wax and try to fill in the dimples, maybe try to sand it first or just flow it on? I do plan on clear glossing when done
I'm sure the pundits will come along with a definitive answer. My money is on sand the errant coat off, and re-do. Trying to "patch" a problematic coat (fill dimples) or flow over defective surface never works. IMO.
Ok Cleanlines, I will give this a cry, I mean try. And I appreciate the kind words, my wife doesnt understand a 55 year old guy crying over a bad color job.