How did your search on 4T parts go? I do have parts of a mold for a 4T sprocket
But not complete some is missing it could be redone. I would cast in polyurethane not rubber, but you needed the complete sprocket correct ?
We could also build the centers but at this time we are swamped on some big projects
shouldn't have bounced your head you wouldn't have got so far behind of course what am I talking about I was in bed sick all day yesterday.
Curious, wonder what way would be the most affordable? CNC milling or 3-D metal printer or resin molding?