I have trouble getting OPS to work I have compiled firmware with #define USE_OPS 1 and has eeprom settings as: OPS operation mode: 2 OPS move after x% retract [%]: 0 OPS min. distance for fil. retraction [mm]: 0.80 OPS retraction length [mm]: 5.00 OPS retraction backlash [mm]: 0.00 But it does never retract anything during moves. Any suggestions? https://reprap.org/forum/read.php?267,182252,182252#msg-182252 Fri, 11 Sep 2026 22:01:15 -0400 Phorum 5.2.23 https://reprap.org/forum/read.php?267,182252,183123#msg-183123 https://reprap.org/forum/read.php?267,182252,183123#msg-183123 repetier Repetier Fri, 08 Feb 2013 14:10:19 -0500 https://reprap.org/forum/read.php?267,182252,183117#msg-183117 https://reprap.org/forum/read.php?267,182252,183117#msg-183117 nikbjo Repetier Fri, 08 Feb 2013 14:01:34 -0500 https://reprap.org/forum/read.php?267,182252,182500#msg-182500 https://reprap.org/forum/read.php?267,182252,182500#msg-182500 never tested this with 0. You always need some retraction to start or the filament will start stringing. So perhaps 20% or so. Maybe that is the reason. Also 5mm retraction is very much. Good hotends need only 1mm and 2-3 should nearly always suffice.

One other point with ops is that the extruder starts with the set max speed - no acceleration. If you hear the extruder loosing steps during retraction lower max speed until you don't hear this any more.]]> repetier Repetier Wed, 06 Feb 2013 10:23:36 -0500 https://reprap.org/forum/read.php?267,182252,182252#msg-182252 https://reprap.org/forum/read.php?267,182252,182252#msg-182252
I have compiled firmware with #define USE_OPS 1
and has eeprom settings as:
OPS operation mode: 2
OPS move after x% retract [%]: 0
OPS min. distance for fil. retraction [mm]: 0.80
OPS retraction length [mm]: 5.00
OPS retraction backlash [mm]: 0.00

But it does never retract anything during moves. Any suggestions?]]> nikbjo Repetier Tue, 05 Feb 2013 13:54:49 -0500