Phil- although I seal mine right from the start, I also started sealing the acrylic paint on the last 1/2 dozen I made, just before going to US and (by my eyes anyway) they were by far the best and most consistent finishes I ahve done, so far. I sprayed them (air brush) with one good coat of "Clear Hard Shellac". I think this must fill any pinholes in the paint, and 'fixes' any invisible fine dust. pete
I am sure if you looked at the paint job under a microscope it would reveal pores. I have heard you talk of this clear shellac before. We do not seem to have clear shellac but I do have what is known as shellac sealer which is a horrible brown colour, it is a fast drying sealer used by decorators working with new woods, it is more commonly termed as 'Knotting' in the trade as they use it primarily for painting over the knots in wood to prevent the resin oozing out of the knot. It's made from crushed beetle shells. Maybe your 'Clear Shellac' is an adopted name and is not 'shellac' at all but a man made replacement.
Having said all that, whilst typing this I have looked around a couple of UK web sites and found clear shellac, here is the description of it.
"Clear Shellac Sealer"
"Clear Shellac Sanding Sealer is a traditional sealer for use under French polish or for sealing wood prior to waxing. It is based on waxy white shellac, which gives it a milky appearance and has additives added to aid sanding."
I don't really like it being based on waxy white shellac , do you think this is the same product ?? Here is a link to the site I found it on.
Jeff. Sorry if the thread has been hijacked somewhat but I suppose sealing goes hand in hand with finishing.
Edited by philB, 20 August 2008 - 11:06 AM.