I plan on making some small moulds of interior car parts that i can repeat (the usual kind of pieces bits of trim etc) I dont want to skin the parts as that is a permanent change and want to revert back if need be.  Im looking for a nice high gloss shiny finish but not sure which is the best way to get it. Is there a preferred method depending on the application? I guess i will be doing the lay up method without a vacuum at the moment.

It is epoxy compatible. I always scotchbrite the coating once cured before following up with the laminate. Not sure if this is necessary??  It's just regular polyester gelcoats cure with a tacky surface which bonds well with the laminate but the Duratec cures with tack free surface so I abrade it just to be sure.