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parts needed:

• resin and hardener - can be found in any home-improvement-shop, if you can't find some, look in the car-supplied part. A small box with some fiber-mattress is fine.
• modelling-mass or clay - can be found in artist-supplies and toy-stores. you can get modelling-mass that get's hard with time for permanent negatives and some that stays soft. It is generally much better quality then children-clay.
• a strip of paper or plastic, fold the paper into a stick

procedure:

Get the modelling-mass soft by kneding it a while. To dublicate some object (e.g. the arm of some sunglasses) you can first use some hand-creme on it if you're using clay and it's sticky. You can either make yourself a small pot of clay or use the negative to put some resin in. Then get a bit (about 1:10) of hardener onto the surface or the (folded) paper-strip and stirr until you cannot make out the hardener anymore. Let the resin dry and harden for about a day and don't move the object during that time, even after it it only a bit sticky but rigid.

you can use a fiber-matt to make larger parts stronger but use much more resin then, you need to soak it. A wire does work with smaller parts too.

For having holes for screws you can put plastic-bolt in there instead of using a bolt-cutter (the resin will be too brittle for that). Metal-bolts will not work as well (and they tend to conduct ;) ).

-- MarcusWolschon - 13 Apr 2002