Not much happening with Dollo, nee involved with Prometheus System and it's taking my time. But I did print some extension parts, I'm planning to extend my build from 36xm x 36cm to 48cm x 48cm (outer widths). Z axis will remain the same, would need to get longer lead screws for that. Z-axis provides about 41cm of build volume, which is ebough for now.

One problem with such a large width is that the beams start to drag: even now I can see that Y-axis has ~1 mm sag in the middle. I think I'll have to buy some 8mm threaded rods to keep things straight. But that'll be in future, other projects take all my time now.

Oh I did print this thing to use in sauna:
https://www.dropbox.com/s/tiqx2ir8lm...19.06.jpg?dl=0
https://www.dropbox.com/s/em3lrleot4...19.11.jpg?dl=0
https://www.dropbox.com/s/fb43rvoyj7...19.26.jpg?dl=0

Black PETG, 0.3mm layer, height ~33 cm. Had bit of problem with over-extrusion, changed MK8 hobbed bolt to E3D HobGoblin and forgot to clean eeprom after updating E steps/mm in firmware. And support material was bit pain to remove as it's PETG.
Other than that the print is quite good, even et the top. There's bit more 'wobble' in layers towards the top as the bed isn't very rigid, but still good enough. And it seems to hold water