Archive for March 23rd, 2015
The first layer started out a bit squashed:
The clearance under that switch lever doesn’t amount to much…
The patch came out looking pretty good, though:
The small red blob on the right side of the nozzle in the first picture tells a tale: the nozzle tends to pull fine hairs from one perimeter to the next, despite 1 mm of retraction. Fiddling with the retraction on subsequent patches didn’t improve matters.
Even though the infill isn’t overstuffed, the nozzle tends to collect and redeposit small amounts of PETG as it travels over the surface. Those small blobs turn into fine hairs when the nozzle moves from one island to the next.
Reducing the bars from six threads to four threads shows that bridging (at 25 mm/s and 0.9 flow rate) seems messier than PLA:
Despite that, all the links came out OK and the sheet was reasonably flexible. After some fiddling with speeds and patterns, these small-link patches popped off the platform easily and were just as flexy as the PLA sheet below them:
So far, so good.