I’m trying to create a small gearbox for a small DC motor using some plastic gears with a 4mm diameter shaft hole. I have been trying to find something to use as a gear shaft for a while now and I am not having any luck. What do you guys use for this purpose?
Hello @martyfay,
Welcome to RobotShop community.
Unfortunately, the closet options we have are 1/8’’ and 6mm.
You can contact the manufacturer directly and order the 4mm one from this link:
Let us know if you need further assistance.
Sincerely,