Expensive garden rake needed new shaft but couldn't find one long enough and had to get a yard brush handle. The shaft fits into a parallel sided aluminium tube and the old one drilled out easily with a cheap forstner bit. However the new shaft was about 6mm too thick. Adjusted a pipe cutter to the diameter of the old shaft and marked the setting on the frame of the pipe cutter and then cut a series of rings on the new shaft to that diameter, pared off the rings and the shaft fitted perfectly.
Peter K