The local lab has recently acquired 2nd hand rapid prototypers, a lazer cutter,
and one of the k8203s.
The significant differences? Slightly larger print area, 1 - 3 minutes quicker printing (mostly a software difference and parallel assembly)
easier mounting of the CNC attachment arm for router-ing, and easier option to mount multiple extruders/canabalised hot glue guns = )
The z axis movement is smoother in smaller increment movements- 0.5mm moves are much smoother.
Apart from that, printing large objects still takes a long time, even with the k8203, and with optimised and hollowed objects.
Still a 2-18hr prospect for the 197mm cube project,
and polychora such as split compound void curve, 127-cell, and tetrahedral points… they are still difficult to achieve with a well-calibrated machine (and, matching 1.75mm filament feeder).
Check your filament measurements too… many “1.75mm” are highly variable, being between 1.2 and 1.89mm dia, which causes some auto-feed problem…
It would be even better, if the nozzle height approached 0.1-0,01… and the extrusion made more of a film than discrete ‘lines’…
also, that the film was more consistent flowrate…
if only the nozzle were less of a round “mound” shape, and more like a cone; less surface areas for ‘splotches’ to come into contact with, and destroy some prints… = )
anyone expecting the k8203 to be 'Form+1" or scintilated lazer/lazer ablation quality, or resin extruded…
it is not that quality. But, it is a vast improvement over the earlier repstrap, or many flimsy plywood ones from Alibaba (we’re onto the 3rd of a competitor 'torture test" machine.