Lathe in a home workshop is not a luxury but a primary necessity: the fact of the matter is necessary to produce parts that are in the geometry are called solids of revolution. But is it really impossible to do without a lathe? Not to remember us on the old, reliable, easily formed material — plaster. There are many details that there is no need to sharpen the cutter for hours to iron with sandpaper, polishing, etc. and all they could be plaster. Working with plaster is much easier than with wood or metal, and “machine” for this can easily be done in just a quarter of an hour from a sheet of thick plywood or chipboard in the center of which is inserted the axle — a metal or wooden rod. Still need a “cutter” — a plywood template with a metal cutting edge. The contour of the edge must correspond to half of the cross section of future products, for example, the layout of the wheel.
Moulded half wheel rotating around the axis pattern: excess plaster is removed and the result is a workpiece of perfect shape. Then the two halves are glued together with a liquid solution of gypsum, and the whole wheel finish. If the suggested layout as close as possible to nature, the wheel is processed with sandpaper and painted by nitroenamel.
The axle is also possible to carve plaster, just like all items with small ratio of diameter and length shafts, axles, tubes, etc. For their manufacture required a machine with a removable horizontal axis of rotation — the spit and motionless, fixed in the grooves of the machine template. The base also serves as a thick sheet of plywood; the spit is of steel rod of suitable diameter. To secure the cast, the rod is wrapped in soft steel or copper wire. Rotating the handle and gradually increasing gypsum layers on a spit, the resulting solid of revolution configuration, approximately corresponding to the profile cutter template.
For details of relatively large diameter, it is recommended to use a frame shaped like a hamster wheel. So it does not rotate on the axis, at the point of joining with the frame hammer square. If the frame needs to be removed from the part after its manufacture, then it is pre-pasted several layers of paper.