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8 Planet Motorized Orrery - 3D Printed instructables 8 Planet Motorized Orrery - 3D Printed by Widgetwizard For those not familiar with what an Orrery is I would (84.01 years) like to oer a brief description. It is an apparatus used to illustrate the relative motion and sizes of planets to Neptune- Orbits the Sun once every 60,190.03 days each other and their orbits around the sun. To put the (164.79 years) orbit times in perspective I have listed the times for the planets below. The planetary orbits around the Pluto- Orbits the Sun once every 90,553 days (247.91 sun are in days/years. years) Mercury- Orbits the Sun once every 87.97 days (.24 After discovering what an Orrery is I was surprised to years) nd that a 3d printed version of any size was not common. I would like to mention that Dragonator has Venus- Orbits the Sun once every 224.7 days (.61 years) a nice 3D printed Orrery on Instructables. There are many nely crafted brass Orrerys available for Earth- Orbits the Sun once every 365.26 days (1 year) purchase if you are so inclined to purchase one. I had discovered some very nice wooden Orrerys available Moon- Orbits the Earth once every 27.32 days (13.37 as well. What I also discovered is how coveted the times per year) information is on how to make one. The craftsman who design these things do not like to share their Mars- Orbits the Sun once every 686.98 days (1.88 information, particularly on what gear ratios they use years) achieve the correct relative planetary orbits around the sun. To speed this process up I created an Excel Jupiter- Orbits the Sun once every 4,332.82 days spreadsheet. To quickly change ratios I merely had to (11.86 years) change the number of teeth in any or all of the appropriate cells and a ratio was calculated instantly. Saturn- Orbits the Sun once every 10,755.7 days (29.45 This saved an unbelievable amount of time. For years) anyone interested in playing with this I have included it in this instructable. Enjoy! Uranus- Orbits the Sun once every 30,687.15 days 8 Planet Motorized Orrery - 3D Printed: Page 1 https://www.youtube.com/watch?v=_iDUASuZ-xA Download https://www.instructable…s.com/ORIG/F57/APCZ/J282Z5CK/F57APCZJ282Z5CK.xlsx Step 1: Materials and Tools You Will Need Attached is a complete material list of items needed 5. Utility knife to build this Orerry. Also included are data sheets for some of the purchased items that you may nd very 6. Soldering iron, and solder (preferred if available) helpful. The tools needed are as follows: 7. Wire strippers (preferred if available) 1. Phillips screwdriver (medium and small) 8. Dremel (preferred if available) 2. Flathead screwdriver (medium and small) 9. Glue gun 3. Small adjustable wrench 10. Pliers (used to hold threaded rod when turning 4. Drill bits- 1/8, 5/32, 3/16, 7/32, 1/4, 9/32, 5/16, 11/32, nuts on). 3/8, 13/32 Download https://www.instructable…s.com/ORIG/FHP/D3D9/J2AWKCDV/FHPD3D9J2AWKCDV.pdf Download https://www.instructable…s.com/ORIG/FVB/7AY1/J2AWKCDU/FVB7AY1J2AWKCDU.pdf Download https://www.instructable…s.com/ORIG/FJL/UZLI/J2GEW189/FJLUZLIJ2GEW189.pdf Download https://www.instructable…s.com/ORIG/F48/254S/J2GEW18T/F48254SJ2GEW18T.pdf Download https://www.instructable…s.com/ORIG/FTV/GZJO/J2GEW1NB/FTVGZJOJ2GEW1NB.pdf Download https://www.instructable…s.com/ORIG/F0W/U8QA/J2GEW1TV/F0WU8QAJ2GEW1TV.pdf 8 Planet Motorized Orrery - 3D Printed: Page 2 https://www.instructable…s.com/ORIG/FKU/KDIB/J2GEW1WS/FKUKDIBJ2GEW1WS.pdf Download Step 2: 3D Printed Parts Discussion This project is not for the faint of heart. There are over parts. 3D printed parts in general are not super 100 parts used in the build of this Orrery. One of my precise. I designed the parts with the exact hole size goals in designing this project was to build it as large knowing that they would be slightly smaller. It was as I could (within reason) using a 200mm x 200mm important to have a nice t for the brass tubes. All of print bed. The actual print bed size is larger than this. the other holes in the gears and frames on the driver As you can see from the photo I pushed the limits of side as well as the secondary gears are 1/4". M ake the printer with the frames and the Mercury driver sure t o run t he bit t hrough t he part s gear. You may or may not be able to move your limit st raight , ot herwise your gears may wobble. switches enough to use the entire print bed. I printed these parts on one of my DIY printers and could move You will notice that the printed parts for the motor the limit switches out further. If necessary there are and mounting brackets are dierent than what the many companies out there that can print these for video shows. The motor itself is also dierent. When I you for a reasonable cost. Pay close attention to the made this originally I used a motor I had laying parts as you import them into your printing/slicing around. When I decided to post this I knew I would software. Some of the frames for example have have to buy something so I could provide the part spacers incorporated in them so that side will need to number and information to order it by. be faced up. Some of the gears are compound gears (2 gears in one part). They will also need to be I have tried very hard to make sure that the ts are positioned correctly. good and minimal work will be needed in cleaning the parts. I would however like to make you aware With a couple of exceptions I printed all of the parts that the gear teeth will need a little cleaning up on at 50% ll. Feel free to try a dierent amount. The the print bed side, especially if you use larger print exception to this were the gear spindles. I printed nozzle sizes. Since you want good adhesion of your these at 100% because I wanted the strength. Caution part to the print bed the rst layer is usually squished here, if you print only one or two at a time the parts down pretty good. This will create a raised area along may not have enough time to cool a little between the teeth. If you are having issues with warping and layers and they may sag. Use a cooling fan, slow the use a brim around the edge you will of course need to print speed down or print a few extra spares. The clean the edges up. Since it is important the gear added number of parts will also allow more time teeth mesh well this will need to be cleaned up a bit. I between layers. The planets can be printed 20-30% ll. like to use a utility knife by scraping it (not cutting) The lighter they are the less sagging of the longer along the edge of my parts. I have added a radius planet support rods you will have. I also recommend along the edges to help some with cleanup. using supports enabled when printing to improve the way they look on the bottom side. The Earth's Moon One nal word about the printed parts. If you will was not printed. I used an airsoft plastic bb for this. It notice in the video I have printed each planet, planet was 6mm in diameter. You can use anything that is arm and gears the same color. I thought it would be approximately this size. Remember that you will have nice to see which gears were actually driving each of to drill a small hole in it for the support. the planets. You certainly do not have to do this, I just thought I would mention it. I used drill bits to clean-up the holes in the printed 8 Planet Motorized Orrery - 3D Printed: Page 3 Download https://www.instructable…s.com/ORIG/FAG/HVX1/J2AWKCDN/FAGHVX1J2AWKCDN.pdf Download https://www.instructable…s.com/ORIG/FRM/F4YC/J2AWKCDO/FRMF4YCJ2AWKCDO.pdf Download https://www.instructable…s.com/ORIG/FK3/59QU/J2AWKCDP/FK359QUJ2AWKCDP.pdf View in 3D Download https://www.instructable…s.com/ORIG/F3T/3U14/JE4KPE3G/F3T3U14JE4KPE3G.stl Download https://www.instructable…s.com/ORIG/FHW/B1X2/J2GEWALO/FHWB1X2J2GEWALO.pdf Download https://www.instructable…s.com/ORIG/FYU/RPMG/J2GEWAE3/FYURPMGJ2GEWAE3.zip Download https://www.instructable…s.com/ORIG/FVP/5ZX7/J2MAUN4Q/FVP5ZX7J2MAUN4Q.zip View in 3D Download https://www.instructable…s.com/ORIG/FVC/W7AE/KA5CYH4J/FVCW7AEKA5CYH4J.stl View in 3D Download https://www.instructable…s.com/ORIG/FDS/JGLH/KA5CYH4K/FDSJGLHKA5CYH4K.stl View in 3D Download https://www.instructable…s.com/ORIG/F3G/HAFL/KA5CYH4L/F3GHAFLKA5CYH4L.stl View in 3D Download https://www.instructable…s.com/ORIG/FM4/7L60/KDHDUML7/FM47L60KDHDUML7.stl View in 3D Download https://www.instructable…s.com/ORIG/FS9/YXZU/KDHDUML8/FS9YXZUKDHDUML8.stl 8 Planet Motorized Orrery - 3D Printed: Page 4 Step 3: Let's Start Building - Frames Assuming at this point you have purchased all of your a 10-24 nylon locknut. Screw nut on until 1/8" of materials, printed all of the parts and gathered the threads are showing. Repeat this for the remaining six tools you are ready to start the assembly. Listed below rods. Shown in image above. are the rst steps.
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