The most typical and cheap way of stretching paper would be to start with soaking it in clean water. For big sheets of paper it could be far better fill your clean bath with 5-6” of lukewarm water. Slip the paper very carefully in to the bath bath tub and then leave it to immerse for a minutes that are few. This can break down a small of the size associated with paper. Very Very Carefully carry the wet paper from the pipe and lay it on to on a clean and dry board – a sheet of sturdy MDF works fine.