The case is
made from a middle tube (steal clothes rail) and two end caps with end plates.
The end plates are made from 0,7 mm PMMA and hold by the end caps. The end caps
are made from thin walled PVC tubing (cable conduit). The PVC tube segments are
heated above there glass
transition temperature with
hot air and pushed then over the ends of the middle tube (thick leather gloves are
needed). After that some sanding is required for a nice looking finish.