A couple years ago I tried it on my Mustang build (Miss America) I put the minwax on after I skinned it.
View attachment 143544
The minwax yellowed the paper a bit and the skin being heaver stock (and I didn't strip off the original paper first) she was a bit over weight. Still flew okay... but I was just transitioning to 4 channel back then (iow, she didn't last long.)
It was a lot of work for a plane that saw a handful of flights...
I do have several sheets already minwaxed, I planned on seeing how they cut in the laser after curing for awhile (or just burst into flame...)
Winter is coming and soon I hope to wrap up some existing projects to focus on some sea planes for winter/snow fun! (Which reminds me, the next batch of ESCs need to be waterproofed!...
I am just about to start finishing my Spitfire (that IS what this thread is about isn't it?!)
I will try your suggestion and minwax it tonight.
Thanks