Drink Coasty Laser Cutter

I try to make a Drink Coasty Laser Cutter refer to the Barton Dring creater.
Due to my 3D printer limited to print area of 120mm, some main body parts is cutted to a half size.
The laser module , I use 500mW only because the price is ¥185.
nema 14 step motor x 2
Arduino nano x 1
A4988 x 2