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I spent Friday trying to modify my joggler jaws. I did not have any 6mm steel plate so I had to cut 4 x 3mm plates to make 2 x 6mm plates then weld them together. I then filed them with the crease about 2mm from the front face. Getting the crease line square to the front and parallel with each other was a challenge, but more so keeping the surfaces flat and parallel. Just about managed it but with probably a 0.005" bow in the surface. What I did not realise before I attempted it how important the geometry of the arrangement was. Moving the crease line further away from the pivot meant that the jaws would not work properly if they were parallel when clamped shut, they had to be parallel when clamped shut with a 1mm sheet between the jaws.
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