Mimaki CJV150 - Won't cut properly

I would try to set the blade deeper in the holder, once i use more than 30g of pressure i typically adjust the depthe on the blade holder.

also try the PC or TP adjustment to mitigate the corner issue, if you cant find those adjustments or dont feel comfortable doing them you can always compensate for this in your art.

 

No problem, refer to the operation manual for adjusting "PC (Print Cut)" and "TP (Target Point)"

If you use genuine mimaki 30 degree offset tangential blades (SPB-0030) you should be able to cut and perf cut or "half cut most materials with the blade sticking out half the thickness of a credit card.

while uncommon you could also check the inside of the blade holder for debris or adhesive residue, the blade is tangential so if its pivot is restricted it may not finish a small cut as accurately