I am using the actual developer version of Slic3r from Github (510ca9f). The last Commit was "Merge pull request #3303 from hyperair/fix-cooldown" I have enabled "Auto cooling" and slow down printing if the print time is below 20s with minimum print speed of 1mm/s. With this configuration the print slows down to approximately 20s on small objects if I am using Slic3r 1.2.9. But if I am using the above mentioned actual developer version there is no slowdown. https://reprap.org/forum/read.php?263,660414,660414#msg-660414 Thu, 10 Sep 2026 06:13:40 -0400 Phorum 5.2.23 https://reprap.org/forum/read.php?263,660414,663061#msg-663061 https://reprap.org/forum/read.php?263,660414,663061#msg-663061
The slowdown is only working, if "verbose output" for the GCode is enabled.]]> Wowbagger Slic3r Thu, 12 May 2016 08:07:02 -0400 https://reprap.org/forum/read.php?263,660414,662149#msg-662149 https://reprap.org/forum/read.php?263,660414,662149#msg-662149 It is easy to replicate, even as dry run:
- cube with 20mm size
- perimeter:1, no infill
- speed for perimeter 60mm/s
- one layer is 80mm long

- without auto cooling:
layer time around 2s

with auto-cooling (slow down if below 20s, min print speed 1mm/s):
layer time is again around 2s (no slow down), but should be around 20s.]]> Wowbagger Slic3r Tue, 10 May 2016 02:54:54 -0400 https://reprap.org/forum/read.php?263,660414,661158#msg-661158 https://reprap.org/forum/read.php?263,660414,661158#msg-661158
I only expect a slowdown if the time for a layer is lower than then given threshold.
OK, example:
- My threshold is 20s.
- If the layer time is around or above 20s there is no slowdown and this is correct and expected.
- If the expected layer time is lower than 20s (e.g. 3s), there should be a slowdown, so the effective layer time is around 20s.

With 1.2.9 and an older dev-version (A) it works as expected and described.
With the actual dev-version (B ) there is no slowdown.

example:
- small object (cube with one perimeter an no infill)
- auto-cooling disabled: layer time 2-3s for A and B.
- auto-cooling enabled: layer time for A: around 20s, layer time for B: 2-3s]]> Wowbagger Slic3r Sat, 07 May 2016 04:22:41 -0400 https://reprap.org/forum/read.php?263,660414,661141#msg-661141 https://reprap.org/forum/read.php?263,660414,661141#msg-661141 amigob Slic3r Sat, 07 May 2016 03:51:54 -0400 https://reprap.org/forum/read.php?263,660414,661126#msg-661126 https://reprap.org/forum/read.php?263,660414,661126#msg-661126 The older version 1.2.9 (with the nasty gap infill bug) or some older developer version slows down as expected.]]> Wowbagger Slic3r Sat, 07 May 2016 02:44:32 -0400 https://reprap.org/forum/read.php?263,660414,660963#msg-660963 https://reprap.org/forum/read.php?263,660414,660963#msg-660963 amigob Slic3r Fri, 06 May 2016 11:42:49 -0400 https://reprap.org/forum/read.php?263,660414,660414#msg-660414 https://reprap.org/forum/read.php?263,660414,660414#msg-660414 The last Commit was "Merge pull request #3303 from hyperair/fix-cooldown"

I have enabled "Auto cooling" and slow down printing if the print time is below 20s with minimum print speed of 1mm/s.
With this configuration the print slows down to approximately 20s on small objects if I am using Slic3r 1.2.9.

But if I am using the above mentioned actual developer version there is no slowdown.]]> Wowbagger Slic3r Thu, 05 May 2016 03:11:44 -0400