From your other post you are quite competent with tools, why not use this opportunity to be creative, first get a bit of steel or aluminium plate 3-4mm and drill some holes, some 'filing' for the slots:
Next get a pack of U rollers from Ebay something like 8 or 10mm radius, they are dirt cheap.
Just a quick sketch not to scale, does not include bolts, washers etc, you can make it any size or design you want should not take long a nice project.
You would probably get away with a bit of 12mm ply and 3 rollers thinking about it, 2 fixed and 1 adjustable, I think 5 would give a better result though.
From your other post you are quite competent with tools, why not use this opportunity to be creative, first get a bit of steel or aluminium plate 3-4mm and drill some holes, some 'filing' for the slots:
Next get a pack of U rollers from Ebay something like 8 or 10mm radius, they are dirt cheap.
Just a quick sketch not to scale, does not include bolts, washers etc, you can make it any size or design you want should not take long a nice project.
You would probably get away with a bit of 12mm ply and 3 rollers thinking about it, 2 fixed and 1 adjustable, I think 5 would give a better result though.
