Building accessible desktop robotics 🤖 3D printable. Precision built. Powered by innovation. Home of Armold, a 6-DOF robotic arm for makers.

Joined April 2025
Our 3D-printed rolling wave drive. 8:1 reduction in a tiny package. #rngineering #3Dprinted #robotics
1
5
427
26:1 Micro Harmonic Drive & 20:1 Micro Cycloidal Drive in action! ⚙️ Both delivering exception torque and precision in a tiny 42x42mm package. Compatible with Nema 17 stepper motors. #3DPrinting #Robotics #engineeringdesign
1
4
319
First three joints of Armold MK8 prototype in action. Powered by our 26:1 high-torque cycloidal drives, offering high performance at an affordable cost. #Robotics #Engineering #Automation
1
3
323
Side-by-side of our Armold actuators. MK8 upgrades to 26:1 reduction (vs MK7's 20:1) with a more robust design. Result: Smoother movements, heavier loads, better performance.
1
239
Our Micro 20:1 Cycloidal, and 26:1 Harmonic drives. Both 3D printed and made from readily-available materials. Perfect for desktop automation tasks and hobbyists!
2
239
Our new 26:1 High-Torque cycloidal drive! ⚙️🤖 Exceptional torque with minimal backlash, perfect for precise movement under load. We've engineered this drive to withstand repeated use while maintaining affordability. #Robotics #3dprint #mechatronics #Gearbox
1
2
206
Our fold-ball sized 26:1 harmonic drive! High torque and precision in just 42mm. Ideal for desktop automation and hobbyist projects. #3dprinting #3dprint #gearbox #Robotics
1
2
377
Sweep Dynamics retweeted
26:1 Cycloidal from @SweepDynamics up and running today ✅ must get printed in nylon next, then build 5 more for a 6 DOF arm
1
1
2
242
Just tested our mini 3-axis arm with micro-harmonic drives achieving 26:1 reduction in a golf-ball-sized footprint. The future of automation fits on your desk - perfect for PCB assembly, pick-and-place, and micro-manufacturing. 🛠️ #harmonicdrive #roboticarm #diyrobot
2
8
216
Testing our 20:1 Micro Drive under load conditions! 💪🔬 Our compact cycloidal drive powers through this stress test—supporting joint 2 of our 6-DOF Armold with another stepper motor mounted at the end acting as dead weight. #robotics #cycloidaldrive #roboticarm
2
4
188
Demonstration of our 20:1 drive in our robotic arm prototype. Right torque & compact form factor. #robotics #cycloidaldrive #3dprinting
2
158
The true speed of our 20:1 cycloidal drive. Even paired with a tiny 23mm Nema 17, this actuator packs a punch 🤛 #Robotics #3DPrinting #engineering
3
139
Our compact & speedy 20:1 cycloidal drive. Perfect for robotics, automation & more. #robotics #3dprinting #gearbox #diyrobot #steppermotor #actuator
1
2
213
Assembling our custom-designed 20:1 cycloidal reducer 🛠️ 🔸 Compact footprint 🔸 High torque density 🔸 Minimal backlash 🔸 Fully 3D printable with standard tolerances Ideal for precision robotics and motion control. #Robot #3DPrinting #engineeringclub
2
136
Our ultra-compact 20:1 cycloidal drive⚙️ ✅ Easily 3D printable ✅ Minimal backlash ✅ High torque output Perfect for robotic arms, automation & more. Fits to all Nema 17 stepper, can make adjustments if needed.
2
143