I've seen conflicting advice on the correct printing temperature for Microcenter's house-brand Inland PLA+, particularly after a supplier change announced in April 2018.
There's an official post from Microcenter, where they state that their PLA+ from both the suppliers they use prints best from 215-225 °C. (The label on the spool specifies 205-225 °C).
However, I've run a series of Benchy prints with recently-purchased white inland PLA+ at different temperatures (with a Lulzbot SL toolhead and 0.1 mm layer depth, slicing by Cura LE 3.6.10 after repairing the STL with Microsoft's repair tool, movement 30 mm/sec), and my experience is very different:
- 220 °C has very severe stringing and blobbing, including blobbing on top surfaces. The text on the base is not visible at all.
- 215 °C has substantial stringing and blobbing, particularly on inside surfaces, but not on the roof of the boat (except the prow). The text on the base is partially visible.
- 210 °C looks very good; there are some tiny blobs on the nameplate and the inside door, and no stringing. This was the first one that didn't require a razor blade to remove from the PEI surface. The text on the base is very clear.
- 205 °C looks great.
Is something wrong with my equipment, such that it's printing with a higher temperature than it reads? Is Microcenter's advice off? Could I have a batch that behaves differently than is expected for the same filament in general?
More to the point -- what advice do others have to get good results with Inland PLA+?