I am trying to determine what type of clamps I should purchase. I saw some C-clamps from Testors that looked to be good for plastic modeling. But I also read that C-clamps are not great for plastic models. The article I read indicated that plastic clamps like those shown here:
In addition to cloths pins (I saw off the opening mouth to make a sharper point) and the little plastic spring clamps, I am using a new style clamp that is becoming popular and has a VERY fine adjustment. These clamps have a steel bar (the clamps are bar-clamp type) and have a plastic end and a plastic mechanism. There are two levers on the moveable part- a quick release and a trigger that closes the clamp a very small distance for each pull. This allows careful pressure adjustment, and they work fine on plastic models. I have bought several 6 inch Irwin brand when my local hardware store has them on sale. I have also bought some four inch versions from Harbor Freight at a very low price (I think a buck a piece) and they work as nicely as the Irwin ones.
BTW, Model Expo has tiny “modelers” clothespins, about an inch long (I still have to saw off and reshape the ends).
Actually, a modeler needs many different kinds of clamps for different purposes. For example, I bought some alligator clips at Radio Shack, glued a 1/8" wooden dowel into the open end (where the wire would normally go) and I use these for holding fiddly bits while airbrushing them and drying them. Just stick the wooden dowel into a block of styrofoam and spray them as they stand there!
FWIW, I use C-Clamps of various sizes that I get from home improvement stores. They’re big enough to work on 1/32 aircraft where smaller clamps don’t reach.