Einhell TE-BF Belt Slitter

Einhell TE-BF uses 2 types of sandpaper belts, 13x457mm and 9x457mm. 13x457mm belts are easy to find and very cheap at online marketplaces. However, 9x457mm belts are proprietary and only sold by Einhell. So, here is my design to cut cheap 13x457mm belts into 9x457mm.

Print the design vertically and insert a regular X-Acto #11 Blade into the slot. Then you can place the 13mm belts and pull them to cut them.