Patent No. 635,175
The Mowery Tellurian: 3D-Printable DIY Kit
Bounty Yield
7,500 SP+ Royalties
The Founder's Briefing
"In October of 1899, Robert Mowery of Arkansas patented this magnificent Tellurian. It was engineered not just to spin, but to physically illustrate the ebb and flow of the tides, the changing of the seasons, and the equinoxes. Mowery designed an ingenious elliptical track and a vertical cam-actuated rod to maintain the Earth's perfect 23.5-degree axial tilt as it orbits the Sun. However, translating his 19th-century cast-iron linkages into a modern, 3D-printable DIY assembly kit is a staggering challenge. I leave it to the Vanguard to resurrect his masterpiece for the modern Maker's desk."
— The Time Traveller
📜 Archival Addendum
Mowery's genius never reached the mass production lines of the 19th century. The physical prototype was lost to private collections, and the machine remained an unfulfilled dream. The Vanguard is hereby authorized to grant this magnificent mechanism the global production run it was denied a century ago.
Chief Archivist Notes
To achieve a functional 3D-printable model, we must solve the lunar kinetic void. Mowery's patent utilizes an annular carrier (Part 43) with internal gear teeth (Part 44) driven by a pinion (Part 46) to rotate the Moon around the Earth.
The Moon must complete roughly 12.37 orbits for every 1 rotation of Earth around the Sun.
Optimal FDM Tooth Counts:
- Nring (Annular Carrier) = 99 teeth
- Npinion (Drive Pinion) = 8 teeth
*Note: An 8-tooth pinion requires a modified involute profile to prevent undercutting. Set pressure angle to 25 degrees.
Master Bill of Materials
To claim this Bounty, your submitted files must fulfill the following modular requirements.
- Module A (Foundation): Central Pillar and Elliptical Track sliced into 4 interlocking dovetail segments.
- Module B (Kinetic Arm): Radial frame featuring snap-fit carriage for a 608ZZ bearing.
- Module C (Lunar Drive): The 99-tooth internal gear and 8-tooth drive pinion.
- Module D (Axial Tilt): Vertical cam-groove bracket to force the 23.5° tilt.
- Module E (Celestial Orbs): Hollow spheres with 5mm aperture for LED diode insertion.
Do not mandate a 3D-printed base. Export a 1:1 scale .DXF routing template of the base geometry so Woodworking Artificers can mill it from solid hardwood.