it seems the CR-6 SE uses 120C for it's strain gauge based bed leveling,
so we'll make this our general default, so we can limit the number of
start_gcode variants we'll need to maintain.
this also introduces a 10 second dwell before any homing happens, to
allow the nozzle to warm up, so that any filament stuck on the nozzle
becomes somewhat pliable.
With low prints, moving the print head up 70mm can still be too low
to be able to remove a print conveniently, so make sure the print head
is at least 60% up at the end of a print.
reduce the prime line sufficiently so the Ender-2 no longer requires
a seperate start_gcode
the extrusion pressure is scaled proportionately, and reduced slightly,
as previously some nozzle ooze could happen between the prime line and
the skirt loops due to excessive pressure buildup
Replace hardcoded print presentation coordinate with print_bed_max[1],
where we move the print bed ~3/4 of the bed size across the y axis
at the end of the print.
At 50C prints with sharper corners can be prone te warping if the
first layer height isn't quite optimal, and given that most Creality
printers don't have ABL, it often isn't.
So to optimize chances of getting good non-warped prints, we keep
all PLA bed temps at 60C for Creality printers.
given the diversity of printers and bed types and a typical lack of
auto bed levelling, it will be impossible to get a good fit
for everyone by default.
A very conservative 0.1 for elefant_foot_compensation is unlikely
to cause overcompensation.
And I'd prefer to undercompensate as opposed to overcompensate
as a default.
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.
with some exceptions most regular PLAs seem to print well
around 200C, which is most likely due to the limited
effectiveness of the part cooling fan design on most
Creality printers
print temperature based on a temperature tower test
190C seems to produce some inconsistencies
200C seems like the best tradeoff
210C has noticably worse bridging/overhangs
Offical pricing from the vendor is 19.50EUR per 1KG roll
print temperature based on a temperature tower test
going lower than 200C doesn't seem to give many benefits
going higher than 200C seems to produce slightly worse
overhangs, which becomes particularly noticeable at 210C
Offical pricing from the vendor is 21.99EUR per 1KG roll
print temperature based on a temperature tower test
going lower than 200C doesn't seem to give many benefits
going higher than 200C seems to produce slightly worse
overhangs, which becomes particularly noticeable at 215C
There is no reference pricing from the Belgian vendor,
however 20,99 per 0.75KG roll seems common
