As per the today i aquired thread, i have got hold of a mccullock strimmer/hedge cutter
Its missing a coupler to attach the drive to the tools
Appears to need a bit of square bore tube about 5mm across the flats, and about 50mm long
Cant see it in the spares list
How can i make one?
two L shaped pieces welded on the corners if you want a tight fit you can use the end of the shaft as a former as the weld will shrink slightly as the weld cools. or bend some sheet to a channel and then weld the top on that to form the tube......or bend a channel and then bend the two parallel side to form the 4th side and weld the seam, like the way they make square tube.
easy 2 flat washers with holes filed fitted inside of a bearing 2 flat nails through and marked cut below cut squeeze tight spot weld and your done fit inside a tube and you have a bearing coupler