After the initial build of the printer several issues with SPECTRA line and printer size made it clear that it will not work with required precision with sufficient speed.
So my observations are as follows:
- SPECTRA line should be over 60kg strong (mine was 20kg)
- bigger the print area and more visible is SPECTRA stretching (this was most noticeable in the long Z Axis)
- Spools for the SPECTRA for big printers are easily getting BIG. Also printing them in PLA is a no go.
- Building Z Axis with SPECTRA longer than 200mm can get tricky quite fast
Because of this issues I went with more proven design with GT2 belts in X Axis. I left SPECTRA line in the Y ...