Ackcherly Doddy,

My motivation was to avoid buying filler rods, when I have all the MIG wire I need.

These feeders are available commercially, but they are silly money and I had the time to make one whilst I am bored out of my brain being not able to do much more than lie in bed or sit in a chair, dosed to the tits with painkillers.

If the thing works, then I will be revising the design of the case to incorporate the drill and file mods I made to this one, then I might publish it as an 'Instructable'. There is plenty of rubbish published there already.

I am just keen to get back into the workshop.