3D printed master flanges

The stencil material used through the years has changed somewhat (especially to accommodate more even tone when printing and different ink formulations), but the newer material can be used normally in older machines. The main difference in old and new stencil rolls is the diameter of the cardboard tube the rice paper material is wrapped around.

On older machines the tube is held in with a pair of detachable plastic flanges (spools that stick into the ends of the roll). These click into holders on the riso that both support the stencil roll and provide some backwards tension as stencils are pulled off of it. The most common method to get newer rolls to fit is to 3D print new flanges.