- A 32-BIT FISHINO! WiFi, SD card, RTC, audio codec, LiPo and more…Posted 3 days ago
- A full featured mp3 DemoboardPosted 2 weeks ago
- A 32-BIT FISHINO board for your powerful IoT!Posted 4 weeks ago
- FairWind: when marine electronics, open source and the University meetPosted 1 month ago
- The Discovery of the Future: Stretchable integrated circuitPosted 1 month ago
- Robots are going to replace developers quicklyPosted 1 month ago
- 3D Prints with Computational HydrographicsPosted 1 month ago
- Open Source into Microsoft’s reality finallyPosted 1 month ago
- Guide to Mobile Apps for 3D DesigningPosted 1 month ago
- A FPGA controlled RGB LED MATRIX for Incredible Effects – the SoftwarePosted 1 month ago
Updates from the 3Drag 3dprinting contest: Roland Hoffert’s Hacks
Roland Hoffert, from www.eytec.de, submitted us this 3Drag (Velleman K8200 version) hack to improve the z-wobble issue, one of the most known problems affecting the RepRap family printers.
Roland identified one of the weak points that could cause the z-wobble in the fixed coupler of z-stepper motor. With the standard fixing, when the z-stepper moves the z-axis rod it starts shaking and this unwanted movement pushes the z-axis up and down, causing the wobble.
As a solution, Roland replaced the coupler with a flexible one; the elastic support absorbs part of the rotational force and stabilizes the z-axis. In addition, also the top z-axis holder has been replaced with a more stable one, in order to absorb better the vertical vibration. This hack is necessary since the flex coupler is a kind of preloaded spring and it couldn’t keep the weight of the arm and axis itself.
Here you can find more pictures and the downloadable project.
You can still provide your submission to our 3D Contest!