How to decrease Print Start Time
Hello,
We recently added a CORE One to our printers at work, and it has been fantastic so far. However, we've encountered one issue: the increased start times for prints. Currently, we primarily print using ASA, and the only adjustments we've made from the default settings are adding the advanced filtration system from Prusa and implementing an XY shrinkage compensation of 0.52% for Prusament ASA. Nevertheless, it seems to take about 25 minutes for the printer to start a print due to the chamber heating process, with the "absorbing heat" phase consuming most of that time.
Is there a way to reduce this startup time? For longer prints, this isn't a concern, but we often have many 15-20 minute prints where waiting the same (or longer) time as the print itself isn’t practical.
Thanks in advance!
RE: How to decrease Print Start Time
So turn off heat absorption in the printer's gcode startup section. It's easy to do, but you have to figure it out yourself. And once you do, you'll definitely start complaining about your prints curling, not sticking to the bed, and similar complaints!
RE:
As @miroslav.h4 pointed out and unless it's a small print, ASA and PC can be problematic if there is an uneven bed temperature. As for the chamber taking time to heat up, I use an "active heater" otherwise known as a hairdryer. Of course for this to work you need to be physically at the printer.
This is what I do for the specific types of filament not prone to warping.
{if filament_type[initial_tool] !~ /.*(FLEX|PLA|PETG).*/}
G29 G ; absorb heat
{endif}
RE: How to decrease Print Start Time
Probably worth pointing out for folks not familiar with editing the startup G-code:
1. You have to be in PrusaSlicer's Expert mode to see that option.
2. It's under Printers>Custom G-code.
3, To make your changes persist, save them as a custom preset (clipboard icon next to profile name). From now on just use that custom preset for your new projects,
Formerly known on this forum as @fuchsr -- https://foxrun3d.com/
RE: How to decrease Print Start Time
Yeah its significantly slower than my MK3S on small parts due to the slow start up procedure. The Mk3 just warmed up and smacked out the print, without going up and down in temp, and just sitting and waiting. I often skip the absorption process and chamber heating(after it reaches some temp) for small parts, doesnt seem to affect the results. But for winter I think i will have to get a chamber heater, its just way to slow. I wish there was a simple option in the slicer for quick printing of small parts where maximum even heat isnt that important, without having to resort to G-code editing.
RE: How to decrease Print Start Time
I keep pondering that I should add an active chamber heater of some sort and use the IO-hack thing / I2C to control it, so that I could then replace the 'heat soak' phase.
Also worth pointing out, there's more ways to improve the bed adhesion/warping situation. Just as others, I'm now almost exclusively using the BQ CryoGrip plate for all prints and materials.