Rotating moon/planet lithophane lamp base

After printing a couple of these fantastic moons. I really wanted a way to be able to spin the moons around and also maintain the internal lighting from a lamp base. So I set about making this adapter. Thanks to DasLukas for making a simplified adapter plate that I used as a starting point.

It is sized to take a 201cc automotive bearing. This is just a cheap way of getting a 6201 (specifically a 6201rs) bearing at a local store with out having to wait for shipping. They are the cheapest I could find locally with a size that would fit my needs with a little work. Bonus is that they are sealed.  

(NOTE: Check around for the best prices by vendor/brand/store before you buy any bearings! The prices varied wildly some brands were almost $30 USD in store, but the cheapest brands were only $1.99 USD .) 

The inside bore diameter of these bearings are 12mm and the outside race diameter is 32mm  and they are 10mm tall.

There is an included file to act as a spacer to center the bearing on a standard threaded lamp shaft. Standard lamp rods are 1/8th I.P. , in the United States, not sure if that is a global standard or not. (1/8th I.P. is 1/8 inch diameter pipe with 27 threads per inch. They are straight cut with no taper. The more you know ;) .)

The bearing is a press fit into the housing. You probably will want to use a material for the base that you can warm up slightly to help ease the bearing into the bore. I didn't have to much trouble after just warming the base up just a little to help it expand slightly. If you use something like PLA just keep in mind that you are pressing it in. Pounding on the bearing may split the printed part.

I have included two versions of the bearing housing with different sized holes. 
The larger hole if you wanted to use the lamp socket as one of your bearing clamping surfaces. Just make sure it will fit through the hole.  
The smaller is for using nuts/couplers to clamp the bearing. 

I hope you enjoy!

<>  Assembly Process <>
I pressed mine in by hand to get it started and then flipped it over on the counter bearing side down and pushed the housing down over the bearing.

Place the spacer and bearing over your threaded lamp tube and tighten down hardware on one, or both, sides as needed. You are trying to firmly grip the center bore housing of the bearing and clamp it to the lamp base.

Then you just install your lamp shade like you do with any of the other base options. The grooves in the base are to help you have some grip to twist the locking tabs into place. Found it way to hard to install remove the lamp shade otherwise.

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Eventually I will also probably figure out a motorized version of this mount. But that is a task for a different day. 

Built an entirely new mounting system for the moon/planet lamps using this simplified Template as a starting point.