SummaryThis is a GoPro attachment for longboards, skateboards and anything else has a flat surface Hardware is made with M4 screws and nuts To prevent any loss of nuts during activities my design involves use of captive nuts ... so remember to pause the printing and inser nuts in their housing test video : https://youtu.be/1ejxgdxdSbY Consider that is 205 mm long (about 8inches), so you need a 200x200 mm printing area and print it on the diagonal of the square