I searched for dryboxes to dry silica which fits into Sunlu filadryer S2 and could be printed on my A1 mini. I found nothing. So I decided to create one by myself. I made the part which fits the roller in an 45 degree angle so there is no support needed. Everything prints without support. On the pictures You see my first try with Sunlu PETG grey. The profile I used for the A1 mini is included.