ackerman steering conversion of ’conventional’ swivel casters. I’m making this dolly to hold my ancient airco dip-pak 200 MIG welder (along with its’ 250 cubic foot argon tank). movie has more details and closeups “we like to keep you informed“. always a joy to hear from fellow airco dip-pak MIG welder owners - hopefully, we can share parts sources, maintenance tips, and ideas...