RC Foamie Vulcan Bomber It is reasonably easy and low cost to make a RC plane from Styrofoam. Foam costs almost nothing - about Euro 2.50 for a block of 5x50x150 cm - and it is available in various thicknesses, 5, 8, 10 and 20 cm being common. I am building a delta wing plane that resembles an Avro Vulcan bomber, with a 1.3 m wingspan, and a Ducted Fan Engine inside the fuselage. From a safety point of view, nothing beats a foamy with a fully enclosed motor. There are two kinds of styrofoam, Expanded Polystyrene (the stuff used for exterior insulation of a home) and Extruded Polystyrene (More smooth and easier to sand, but heavier and used for roof insulation). Both kinds will cut super smooth with a hot wire and it is the same plastic, so you can just as well use the cheaper and lighter white beady stuff, since if you tune your cutter temperature properly, then you don't need to use sand paper. For reference, Polystyrene melts somewhere ...
We live in a village outside Bratislava in Central Europe. This is prime agricultural land and there are infinite numbers of moles in the fields around us, so some will eventually stray into the garden. Once they are enjoying the good life in the village, it can be hard to convince them to relocate. I tried a few things and can now present here the 100 Horse Power Mole Eliminator : It costs nothing and it works. If you have an old lawn mower, garden tractor, or moped, that may be easier to move around and it produces more global warming badness, but a car starts with the press of a button and a couple of hose pipes clicked together, to go from the driveway to the far end of the yard, works well enough. The trick is to get all water out of the pipes before you start - lift it shoulder height and walk along the pipe a couple times. The exhaust of a modern car is not very hot and will not melt plastic, but I used a short piece of metal pipe since I really don't want...