oh yeah, let me lay down some basics on what makes a ski work the way it does:
Topsheet: clear plastic, the graphics are silkscreened on the bottom. some times they use white, and subliminate them into the top few molocules of the plastic. these get scratched off and look crappy.
fiberglass: usually, its triaxle, which means the fibers run in 0, 90, and 45 degrees. composites only have strenght in the directions the fibers run, and triaxle provides strenght up and down the ski, and diagonally, toward the edges. biaxle creates a much softer ski torsionally, which could be benificial for a park ski. heavier wghts will have more material, and be stiffer. also, the ski is build with epoxy resin. not some off the shelf glue from DIY. (oh yeah, the less epoxy, the lighter the ski, cause its the heaviest thing in the ski, and thats why a good press is important)
you want to use good wood. you cannot have knots or imurities in the grain. thats why skis are built with a vertically laminated core; it gives them a plank of solid wood without having to scrap a ton of bad wood. again, the more strips, the more epoxy is used, the heavier the ski. also, the camber and contour of the core is veryimportant. machinging this stuff is not easy either.
theres a layer of glass under the core
the base is cut out in the shape of the ski. the edges are glued on, usually at every three or four tabs, cause when the ski is laid up, the epoxy holds it in. a rubber strip is usually built in abouve the edge and inside the sidewall to minimize vibrations. not all skis have these, but they are reccomended.
most skis use ABS, but that doesnt take impacts or flexing as well as PTEX, so skis like 4frnts use that. it is also much easier to repair.
anyway, you really dont have much of an idea of what your doing, and i wouldnt recoomend throwning away your money.
I drink pepto bismal like its water.. -PJO