making your own shell to any design is easy.
step 1/ get an old damaged sheet of celotex foam board from your local builders merchant,cheap,about a £5.
cut it up into bits approx the length and width of your car.
glue these together with wood glue to the height of your car usually approx 40cm.
once dry you should have a big square block of foam slightly bigger than your proposed new shell.
This foam sands super easy,but before shaping this foam do the following.
mark centres of wheels by pushing old pencils into the foam,then mark your high points also with pencils IE: shock mounts wing mounts ect,by again pushing pencils in the foam.
What this does, is it gives you guides to sand to so you don't sand too far
next google the net for pictures of buggies there's thousands of them.
heres one i'm doing for an mcd.
once you have chosen your design start sanding the foam as close to the design as you can get.
you should end up with a foam block in the shape of your chosen design.
rub over foam in release wax available from suppliers as below
paint or spray over this with pva glue approx 15 to 20 coats.
mix up white fiberglass gelcoat (available from auto,marine shops or as i got from my local fibreglass factory) i took some glass jars and he gave me gelcoat,fiberglass resin,hardener,and fiberglass cloth,all for £12.
coat your pva foam mould with the mixed up gelcoat with a brush or best sprayed.
once dry mix up normal fiberglass resin and lay fiberglass cloth and smooth over.
repeat this to give a thickness of about 3mm.
once dry release the mould from the foam and hey presto you now have a master mould of your special one of a kind shell.
now that you have your master mould repeat the process explained
previously but you will be coating the inside of the master.
so coat in release wax, pva, gelcoat, resin, and cloth to you required thickness.
Then once it has dried release and you now have your master still intact and a new fiberglass shell ready for painting.
you can as an extra process beef up any areas you think will suffer in racing/bashing with metal micro-mesh reinforcing available from auto parts centers for about £3 a sheet.
do this when your laying down the fiberglass cloth layers.
You now have a shell that is many times stronger than crap lexan bodies,is reinforced,is a one of a kind shell that you shaped and sanded and cost you about a third of what a new lexan shell cost,and if you damage it, you just mix up fresh resin and 10 minutes of sanding and its as good as new,but then again hey! you've still got your master to make a new one if you so wish.
this process can be used for all scales of bodies not just 5th scale.
costs:
pva
gelcoat
resin
hardener
cloth £15
foam from builders merchants £10
total £ 25
lexan body approx £90
saving overall £65
about 4 hours work evenings or weekends
you can find many videos on youtube on this subject and is fairly easy to accomplish.
i hope this is helpful and why not post your finished bodies
regards to all
john