Simple Earth Orrery

A complete waste of material, with unacceptable tolerances rendering it entirely uninstallable, a colossal waste of time and resources, compounded by preposterously unhelpful GIF instructions—was this designer deliberately trying to be obstructive?

The parts used in the 15th and 16th gif animations are earth_fix_pin.stl and earth_small_gear.stl? If so, then the earth_fix_pin.stl only sticks out by 0.5 mm when the EarthAxis_holder.stl is installed in the 20th gif animation. Am I choosing the wrong part?

i printed this but had great difficulty. There are some errors in the model that need to be addressed, but ended up getting it working. I had to do multiple prints of each of these parts to figure it out. This also means you need glue for certain sections. I printed using bambulab PLA on the H2D. Please be aware of these changes before printing and avoid the headache. Here is what I had to change: * earth_fix_pin: resize to 99% and add an extra 5mm to the z direction * earth_axis: resize to 97% * spinaxis: resize to 99% * roata conica bun1: resize to 101% * roata conica bun2: resize to 101% * 3rd_gear_axis: resize to 99%

Printed this on Bambu A1 mini. The supports on tall parts worked well and the design is really well. I had to file some of the holes but better fits could have also been by scaling if I were to make another. Really a fun project and very good model when finished. Definitely 5 stars and I'm giving two boosts.

very hard to assemble

There are 13 zodiac constellations (crossed by the ecliptic) that the Sun travels through in the course of a year. Your piece only has 12.

Definitely a very difficult assembly to get working right.

First of all, I did this as well—thank you for sharing it. For anyone looking to try it, be aware that some parts have issues, as noted in the comments. I’ve redrawn those sections in my project.

the drive shaft needs to be printed flat on the bed instead of upright, so that the filament print direction lends its strength. otherwise the drive shaft will break because of the force required to turn the not-perfectly-aligned gears. after breaking two drive shafts, i designed a rectangular one instead with two drive handles. now it works like a charm (other than the sphere prints which i will just make out of clay. and just one more thing: the moon should technically be spinning counter-clockwise for accuracy, but understand the difficulty in gearing this ;) if you're building this, prepare to do test fits before final assembly. it would be great if instructions included which pieces should be tight fit vs loose.

I love this model, And a SUPER sturdy print. Only problem I had, was that none of the parts had any tolerances. Some of them I could fit together by tapping them in with a mallet, but others had to be able to move (("Earth_fix_pin" & "earth_small_gear")where the gear must be able to spin around the pin), and as such made the model unusable. a real shame. PS: I'm adjusting those parts now to see if I can get them working ;) Thanks for the work you put in to create this, but it doesn't work for me out of the proverbial box