Sticking Issues with AnyCubic UltraBase
So, I got a fancy new AnyCubic UltraBase for my Monoprice Maker Select v2.1 yesterday (only took 21 days to deliver!) and it went on without a hitch. After leveling, I printed a calibration cube with absolutely no issues (I love how it literally just pops off the plate at 35°C). However, I then went on to try and print a Nicolas Cage lithophane "for a friend" and after three tries so far, I cannot get the whole thing to stick (poor Mr Cage)
Bed Temp: 65°C for first layer, 60°C after that
Extruder Temp: 210°C (same temp I've used on this roll of filament so far on my old glass bed)
Material: Red Hatchbox PLA
Any suggestions on how to fix this would be deeply appreciated. The first two prints, I can understand this happening since the room was unevenly heated, but I got the room up to about 72°F overnight and tried again with exactly the same result this morning.
Posted Nov 7, 2017, 5:26 PM UTC
I got my UltraBase ~2 weeks ago. I found I need to keep the bed at 70c to keep it stuck. That temp seems to be the sweet spot for everything (Multiple brands of PLA, color change, and glow, as well as eSun PETG).
Okay, I'll give that a shot, though isn't it above the glass transition temperature of PLA?
The glass used for the UltraBase is borosilicate glass.
The glass transition temperature is the point at which PLA undergoes a change that will result in a brittle, crystalline end-result. PLA that has surpassed its glass transition temperature is less flexible and weaker than that which has not.
I'll admit that's total over my head and I (clearly) have no idea.