300D50 wrote:
Housings look great!
18 hours does seem a little bit high, even given that volume. What were your layer height, infills, perimeter, and print speed?
I'd probably go 0.3mm layers, 3 perimeters, 45mm/s speed, and 25-30% infill, off the top of my head in PET-G. Adjust print speed for PLA.
TooBusy wrote:
2 my slicer turns circles into 28 segments of straight lines. That means I either have to file them round or make the holes 0.3mm oversized.
It took about 10 minutes with the file and sander to get the lights to mate up with the housing. I filed the holes round and sanded a bit of clearance on the light housing.
It might not be your slicer, check your .stl export settings in CAD and make sure the accuracy is high enough.
I've ran into that with Inventor before.
TooBusy wrote:
3 getting a perfect first layer is tough. You have to play with settings and/or start sequence to get the first little bit of filament to stick.
On an un-coated glass bed I've had the best luck using a cotton pad/round with rubbing alcohol to clean the bed while hot, or going the total opposite and using a thin film of cheap aerosol hairspray while hot.
The coated glass surfaces all get rubbing alcohol when hot with a cotton round.
18 hours was with 0.4 nozzle, .2mm layer, 3 perimeters, 35mm/s print speed, oh and I'd upped the infill to 60%.
Before I printed I changed to 0.6mm nozzle, .28 mm layer, 3 perimeters, 35mm/s print speed, and lowered the infil to 40%. Was done in a few minutes less than 10 hours.
I'll take a look at the export settings. The "model" looks smooth until the slicing is done, but I know that doesn't mean anything.
For these I laid down painters tape after 3 false starts. It worked like magic; but I'd much prefer getting my settings correct so that I can have a repeatable start routine.
Time for more reading...