As an Amateur I sometimes need a tool that is rarely or on sale, or is not satisfied by construction, (and today — and for the price). So we have to invent and produce itself, looking for possible easy solutions. I would like to share with readers his versions of such popular devices as the machine (frame) for sawing metal.
Start with the requirements to such instruments. Chief among them: during operation, the machine must keep the saw blade well tensioned, to provide comfort when cutting at different angles, and if necessary — and easy replacement of the canvas the new.
The simplest machine-impromptu (option to give) I made in a few minutes. Took him fresh cut branch of a willow (willow) of adequate thickness (not less than 25 mm), bent into the form of an onion (Fig.1) and instead of string tied soft steel wire mounting holes for the saw blade. Fabric fastening with nails, screws or bolts is unacceptable as will lead to splitting of the wood. However, this method only in extreme emergency: still the tree dries out, losing the elastic properties.