I have 3D printed the STL file from here (Section 2)
But the design isn’t working for me. I don’t understand the following:
- The hole in the Servo grabber arm is too small for the round centre of the servo arm. I managed to file this out so the cut down plastic piece from the servo (bought from Dexter) fits in.
- Why is there a hexagonal hole on the side of the free moving arm? I would expect a 3.5 mm hole (which is approx the diameter needed for all the GoPiGo3 bolts). Also I would expect a recess underneath for the bolt head to fit in. Using a large non-GoPiGo nut in the Hex hole and a larger bolt and washer, the head of the bolt stopped the Printed Cap from clipping onto the Servo.
- ie. Why isn’t it designed for the standard GoPiGo3 bolts?
Any pointers? I have no 3D print experience, but I will aim to adjust the STL file so it works with the nuts and bolts that are available with GoPiGo. Is FreeCad the right way to go?