Spare for Joint Genie dowelling jigs. Allows infinite end to end gangs of bars (bars are 6mm end drill/tapped) and side to side offset positioning of bars for accurate sheet stock work.
These allow for a simple and low cost method of locating the holes for dowells. Simply drill the hole in the first piece (accurate centering is not essential) , insert the dowell pin and bring the mating piece together and tap it which l