A tricky thing to explain. My son has asked me if I can make for him a wooden frame incorporating 2 rollers so that a 30M x 20CM roll of paper can be scrolled through. Big lump of paper. I can do the woodwork and any turning required but I can't figure out how to tension the paper between the rollers. Something like the roller-map used by Stirling Moss & Denis Jenkinson in
1955.Any thoughts please Nick