Not trying to be confrontational or argumentive, but if your time is worth Say $5.00/hour and you spend 2-3 hours running around getting foam, tape, foil, fiberglass, resin. stir sticks, cups, acetone and miscellaneous supplies, gas and milk, that's going to cost at least $40.00 plus we can't forget the $15.00@ $5.00/hour. So our thrifty "Do it yourselfer" in our little scenario is into his project for $55.00 and he/she hasn't even started mocking it up yet. then there are the joys of mixing the resin laying the cloth and dripping sticky stuff all over everything within shouting distance. (probably another 4-5 ($25.00) hours mocking it up and laying down the glass, maybe cleaning the mess, maybe not) So where are we now? did we just make a mould that more likely than not has been done a thousand times before, or are we going take our hardened creation to perfect symmetry and fit with the old grinder and lots of sandpaper and bondo and sandpaper and bondo. Let's face it grinding fiberglass has to be one of lifes greatest pleasures, and it hardly makes any mess at all and it makes your skin feel soft and smooth. I am guessing you perfectionists out there spent at least 4 hours getting it ready for paint ($20.00 @ $5.00/hour) And if all goes well you have a one of a kind piece of art that you can take pride in having created it with your own hands. That is what makes it worth all the time and effort. But you could end up with a seat that looks exactly like my $65.00 not such a bargain seat. Or you just might end up with a piece of crap and a $100.00 hole in your pocket.