EACHINE FPV TX Mount - F450 arm mounting holes.

thingiverse

Print Settings for DJI 450/550 Arm Mounting Supports 3D Printing of Arm Attachments The mounting system designed by DJI for their drone arms allows for secure and stable printing. Printing Requirements In order to ensure a strong bond between the arm and the printer, certain settings must be adjusted before beginning to print. Raft Settings Rafts can be either on or off when using this design. Regardless of your preference, you will still achieve excellent adhesion with these settings. Layer Infill Pattern When printing an infill layer pattern for these arms, a density of at least 20% should be used for the best results. Support Settings Just like raft settings, supports can also be turned on or off depending on individual preferences and printer types. Nonetheless, this arm mount will function perfectly even without any additional support material printed in conjunction with the part itself.