HI all right I original got he idea for this project from a article in model engineer so I have adapted it to fit my lath I already had the worm drive and shaft as this came from a a scrap motor.
I turned dawn the end of the shaft to move the worm drive up on the shaft then i made up the two Bering's for the front and the back of the mounting tube the tube is 1mm thick front Bering over all length is 13mm turned dawn to fit in side the tube left a shoulder 5mm from the end for the tube to but up against drilled 8.8mm then reamed 9 mm to fit the shaft back Bering 13mm long by 26mm OD turned dawn to fit the tube left 5mm at the back turned the OD dawn to 25mm drilled 8.8mm then reamed 9mm to fit the shaft I hope the picks will help right the dividing plat cut a Peace of stainless steel 80mm OD by hand 10mm thick face off both sides and mack the plate 4mm thick that's as far as i have got right pics
I turned dawn the end of the shaft to move the worm drive up on the shaft then i made up the two Bering's for the front and the back of the mounting tube the tube is 1mm thick front Bering over all length is 13mm turned dawn to fit in side the tube left a shoulder 5mm from the end for the tube to but up against drilled 8.8mm then reamed 9 mm to fit the shaft back Bering 13mm long by 26mm OD turned dawn to fit the tube left 5mm at the back turned the OD dawn to 25mm drilled 8.8mm then reamed 9mm to fit the shaft I hope the picks will help right the dividing plat cut a Peace of stainless steel 80mm OD by hand 10mm thick face off both sides and mack the plate 4mm thick that's as far as i have got right pics