The self-healing surface works perfectly with paper cuts. If a fuzzy fabric on one cuts (plush), some lint remain in the "pores" of the cut stick. The self-healing surface it no longer lets go. But at A4 probably cut the fewest people substance, but rather paper. For this purpose, the mat is perfect. Whether I cut with the rotary cutter or with the box cutters - the mat remains intact. The scale is very convenient and very accurate! Strong buy recommendation for hobbyists with only mediocre place!