I’m very new to robotics and I’m currently working on a project that requires the use of gear. What I’m looking for is something that I can use to connect the gears together on, I don’t want to use a cardboard to poke holes into it and put the gear axle on the cardboard and I do not have a drill to drill holes into some harder material for me to put gear axle in. The closest thing I found to what I need was a Lego piece called a liftarm but those definitely is too big for usual gear axle and even if I go out of my way to buy Lego gear and axle, I don’t think I can easily connect it to a normal motor plus those are very expensive plus I’m just working on a small project and don’t want to spend too much. I don’t own a 3d printer nor knows anyone who own one to print custom parts and I don’t live in a country where I can easily order custom 3d printed parts to deliver to me. Is there anything that is readily available and is made to fit gear axle or is there a name for something like this? By normal axle, I’m talking about the axle that is the size of the axle in normal DC motor. Thanks.