Hoover filter

Originally designed to catch Lego blocks but far better suited to the tool room for picking up washers, nuts or small connectors.

Mounted at the end of the pipe, before the final squeegee. The original fits a pipe with an internal diameter of 33mm. For others the design must be scaled. So far, it has proven itself in both domestic hoovers (Electrolux, Bosch) and workshop hoovers (Karcher).

It is best to print from a flexible material; that way it is easier to attach and pull out the collected items.