While doing a bunch of bed adhesion tests, both on Creality's
FakeTak as well as on smooth PEI, while 50 degrees seems to work
with most lower temp PLAs at least, but less so with the higher
temp PLAs, it universally requires the first layer height to be
dialed in much better to not get any warping.
With the bed temperature set to 60 degrees, there is much more
leeway in the first layer height while still getting unwarped
prints.
Particularly given that most Creality printers don't have ABL as
standard, I think it might sense from a robustness perspective
to have all PLAs default to at least 60 degrees, as to increase
chances prints will come out just fine.
https://www.prusaprinters.org/prints/4634-bed-adhesion-warp-test
This glitter PLA requires a significantly higher hot end temp to
get a similar amount of flow as the same brands counterpart
regular PLA filament
It even needs a slightly higher bed temp to prevent warping on
sharp corners
printers with a large bed are probably more prone to heat induced
bed warping, there we'll split up our abl start_gcode in fast
and slow variants, where printers with a smaller bed like
the Ender-3 will still use the fast variant, printers with
a large bed like the CR-10 will use the slow variant which
heats up the bed before starting the abl procedure.
Based on test-dog.gcode on the SD card included with the Enter 3 Pro
M190 S50.000000
M109 S200.000000
I also did a temperature tower test with the sample filament spool included
with my Ender 3 Pro, which I still hadn't opened.
And at all temps 190-215C I've seen fairly poor bridging, with 190C being the
least worst. I still have to test, but it'll likely perform well at 185C.
The semitranslucent white PLA included with my Ender 3 Pro, probably has a
matting agent in it, which explains why it's very flowy, and very similar
in performance to another Matte PLA filament I have, which also exhibits
poor bridging at even moderate temperatures.
For the time being, let's stick with Creality's own sample settings.
