ORIGINAL: doxilia
Matt,
With the KK clear, do you spray a tack coat on to the wood, lay the cloth down and then reshoot it with a heavier layer of CC prior to primer? Or do you even use primer under the paint?
The concerns I've heard about epoxy based clears as top coats is that they are not impervious to UV - reason for which many classics finished with K&B or Hobbypoxy yellowed as the aged. Any thoughts on that?
David
Dave,
Did I ever send you my scribble on how do all of that? Thot I had but could be wrong. Memory ain't what it used to be.
Talking with Bob Hunt a few weeks ago he suggested that the final sanding of the balsa should be with 1500 or 2000 grit, used dry and not completely removed. I think he is right! The sanding particles are small enough to actually fill pores so the next coat of anything will seal better. Balsa is then sprayed with hairspray to initiate the seal, dried, and fine sanded. Alternately nitrate could be used to seal.
Anyway, once sanded, the cloth is laid down on the prepped wood and epoxy clear is brushed right through the weave just the same as using finishing resin. One bedding coat and one seal coat of the glass, sanding in between and after, and you are ready for primer.
With auto air colors you want to spray light coats until it just covers. I am still developing the technique of opacity and lightness using auto air colors. You have got to take your time