Proud owner of a Velleman K8200. Due to the low price they also delivered som problems with it, but it ok, then i have something to work on. The goal is to improve the printer as much as possible.
These are my projects:
Design a new z-adjustemnt device- DONE
Change the extruder gears to helical gears (actually no improvement, bute it´s DONE anyway)
Change the extruder helical gears to a gt2 belt transmission or solid metal gears.
Change the pulleys on the x- and y-axis to avoid backlash in the machine.
Try to chanche the linear bearing to an expensive quality model.
- Attach a threaded rod instead of the sliding rod on the z-axis to avoid deflection in the beam. A pulley and belt transmission will be designed.
And probably lots of more things. Tell me if you have an idea!