HobbyKing 3D-printer Filament 1.75mm polycarbonaat of PC 1.0kg Spool (zwart)

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Difficult, but Great Filament!

Oct 14, 2018

I was able to get this to print easily at 258C, but it wouldn't adhere to anything. My first problem was getting the temp to stay within range. On my Prusa MK3 there is a set limit of 300C max, so I had to calibrate the sensor at 290C. I replaced the stock parts with a e3d nickel plated copper block, a 0.4 mm copper nozzle, and I put on a silicone "pro" sock to help the hot end stay warm.
After some fiddling, I increased the temp to 290C for 1st layer (288C on layer 3 & higher), set the fan speed to 0% (5% at layer 5 & higher), and the bed up to 119C (115C on layer 5 & higher). I slowed the 1st layer speed to 20% maximum, decreased 1st layer height to 98%, and increased 1st layer height at 105%.
I am using the glossy spring steel PEI-coated bed. This material comes very tough once printed! The only thing that would be close to this is ASA, a UV resistant variant of ABS plastic. I do not have a enclosure currently, and the material is definitely suffering from some warpage.