i've heard that vac bagging a top coat with mylar gives a glass like finish you simply peal the mylar off afterward. so its essentially a resin layer.
haven't tried it myself yet tho!.
let me know if it works.
It works a treat trust me
The purpose is to obtain a thin skin which is resin as that is the only way to obtain a full and deep gloss/sheen
yes I vac bag mine.
The objective is to make a cured and finished thin laminate.
Thickness is up to you but I normally do a 2oz or thinner scrim layer with decals next followed by a layer of 4oz. Leave to sure then bond
If done right you end up with a completely finished fully glossy outter surface to your board.
Once the topsheet is cured leave thay Maylar if you like sheet attached, dont remove it.
skuff the top sheets bonding side with 40 grit and clean the dust off. Now simply go to your rocker table lay up the normal structural layers and put the pre-cured top sheet on and after the normal vag bagging process has been done, you can remove that film layer to reveal the goodness.
Here is a link to a video which shows a mate of mine revealing his new board many years ago now, not the best finish possible but this was a prototype process for me back then, they come of perfect noe
watch his face http://www.youtube.com/watch?v=bdVr7wWR ... _iN9xWZ1sN