See, this is why I love this forum. Everyone is always so helpful and freindly, even if i seem to ask a simple question.

Thanks djsures and jeremie, the servos im using are from hobbyking. awesome servos but don have a clue how many teeth they are.

I added the part im printing as it was in the stl file ( image attached ). 0.1mm resolution and ive added supports and rafts if its as simple as my servo output gears are a little larger, i can deal with that so thats fine. When these first came out, i had a company send me a sample print of this lever and it fit perfectly.

In fairness, im now doing my 3rd ever print and i seem to be getting closer to understanding things a little more

Ok so i just completed the lever print, used rafts and supports picked away at each little part and managed to force it onto theservo and it holds stron and is the perfect size. thanks guys!

just a question about the next peice, the bit that goes onto the back of the servo to complete the servo arm. Am i supposed to remove the servos own back and replace it with this or does it just go straight on?

Remove the one presently on the servo and replace it with the one you print out. Use care so you don't pull the motor out when you disassemble it or pinch wires upon reassembly.

I have made a few and they work well.

Ron R

awesome thanks