Can be used for all laptops, also suitable for MacBookIf you have enough space on your 3D Printer, multiple parts can be printed at the same time. Also, use line support with 20 mm support line distance. 10% infill will be enough for your print. Increasing inner and outer wall speed will help. In order to print this model functional, you must print 2 of all part except Roller Mid Connection and Roller Pin. Also place Arm Pin to Carrier and GLUE Level Arm to Arm Pin. You can use glue at pin edges for secure model. Check the images.