First trial to stabilize the z-axis thread shaft of the CTC printer. Ok, the z-axis is stabilized by the lateral plain bearings, but it wobbles very strong and thus reduces the accuracy of the X and Y positioning.
Perhaps also usable for identical Makerbot and FlashForge printers.
Best results in combination with better z-axis brackets like this: http://www.thingiverse.com/thing:497923
This thing was made with Tinkercad. Edit it online https://tinkercad.com/things/dXkjVFjrSjw
- with support
- layer 0.2 mm or less
- infill 60-100%
Before installation, check the ball bearing fits well into the hole.
- move the platform down
- mount at first the blank stabilizer (without bearing)
- let the screws loose
- move the platform in the top position
- adjust the stabilizer to center the axis in the bearing hole
- press in the bearing (F 605 ZZ, 5 x 14 x 5, see important note below)
- check the smooth moving of the platform (moving manual up and down)
- be sure there is no collision between stabilizer and platform case
- Pulling the screws with platform in top position
The Z-Axis of CTC's seems to be often different. In my case the Z-Axis has an pivot/spigot with 5 mm diameter on the top - so, I need an 605zz bearing. Some other has an 8 mm end-to-end Z-Axis - in this case you will need an 608zz bearing. So it's important to measure the top of the z-axis previously!