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Refrigerator Magnet Gear Spinners

by MechEngineerMike Oct 15, 2017
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I made a couple of knobs for these gears


knobs for MechEngineerMike gears

these games are beautiful,
I thought you might be interested in my project, it's a lamp printer.
what do you say?
thanks bye

What do you mean by "3 perimeters all sides minimum"?

When you print these parts the shell that surrounds the infill should be thick so that the teeth arent weak.

Love this! I'm the Early Childhood Design Lab specialist at my school. I know my 3 and 4yo students will enjoy these. I am going to allow my first graders to print these as an intro to our printer and software. They will love creating something our younger students will use. Thanks for sharing!

Thanks Ikeener how nice to hear that feedback!

I noticed you used ABS. We only have access to PLA. Do you think these will hold up in PLA? This is all pretty new to me.

PLA is usually my preferred material but in this case I recommended ABS for a couple reasons.
In PLA you will have to watch out for sharp edges since these will be handled by kids. Also, the 4 pins on top will be more likely to snap off so I would recommend opening up the thingiverse customizer and turning off the 4 pins. (or just print them as is and intentionally break off all the pins so it doesn't happen later.)
Also on another note, I would recommend finishing off the assembled toys with a dab of superglue or epoxy to help keep the magnets inside just in case.

I can't seem to find the setting to turn off the pins in the customizer. Which option is it?

Super cool idea, but I'd be worried the magnets or bearings will pop out when they're dropped. Have you been having that issue?

There might be a better way to capture the bearing/magnet inside the gear, but that would certainly make it more complicated. Interesting problem!

There is a slight variance in the feel of the press fit between the magnets & bearings & some did fall out prior to gluing them in. I would definitely recommend epoxying each one.