# Maximizing Speed test from TeachingTech **URL:** \ **Category:** General Discussion\ **Created:** [April 1, 2023, 6:30pm UTC](https://klipper.discourse.group/t/maximizing-speed-test-from-teachingtech/7588 "2023-04-01T18:30:21Z")\ **Posts on this page:** 7\ **Page:** 1
**Author:** ![sterlinggold](https://avatars.discourse-cdn.com/v4/letter/s/dc4da7/32.png) [@sterlinggold](https://klipper.discourse.group/u/sterlinggold)\ **Post date:** [April 1, 2023, 6:30pm UTC](https://klipper.discourse.group/t/maximizing-speed-test-from-teachingtech/7588/1 "2023-04-01T18:30:21Z")
Printer Model: Creality CR10v3 MCU / Printerboard: Creality 2.5.2 Hi everyone, I’ve been trying to run [Michael’s speed test](https://teachingtechyt.github.io/calibration.html#speed). The same printer while using Marlin I could see under extrusions happening above 80/90 mm/sec However with Klipper speed appear capped and will not enter under extrusion state. Attached is my config file. I can print and generate log, but suspect this is a config item. I’m using the “slicer” on the page to generate the gcode (attached) with speed between 120-160 which should def have some under extrusion articles, yet it printed just perfect, which tells me the firmware somehow caps things at 70 or so? Any ideas? thank you! [printer.cfg](https://klipper.discourse.group/uploads/short-url/f2nPINrLYPfgivJBmZbvs82T1tf.cfg) (5.6 KB) [speed (4).gcode](https://klipper.discourse.group/uploads/short-url/eDvUmIfSARgiVyEpfbVaavGhjXf.gcode) (1.3 MB) ![2023-04-01 14_26_34](https://global.discourse-cdn.com/free1/uploads/klipper/original/2X/9/9670b6b344bbd965103996cd75dbb437595bc76c.png) ---
**Author:** ![EddyMI3D](https://yyz2.discourse-cdn.com/free1/user_avatar/klipper.discourse.group/eddymi3d/32/1981_2.png) [@EddyMI3D](https://klipper.discourse.group/u/EddyMI3D)\ **Post date:** [April 1, 2023, 7:31pm UTC](https://klipper.discourse.group/t/maximizing-speed-test-from-teachingtech/7588/2 "2023-04-01T19:31:23Z")
Referring to this topic: > [@Will a Klipper Printer print much faster?](https://klipper.discourse.group/t/will-a-klipper-printer-print-much-faster/6322): > > Will a Klipper Printer print much faster? There is a widespread word that installing Klipper will make the 3D printer much faster than with any other other firmware. This is essentially false or only true under certain conditions. Key drivers for high speed printing Definition of printing speed Typically printing speed refers to finishing a printer job in the least possible time at best possible quality First influence: Acceleration [mm/s²] determines how fast the target Velocity is reach… ---
**Author:** ![sterlinggold](https://avatars.discourse-cdn.com/v4/letter/s/dc4da7/32.png) [@sterlinggold](https://klipper.discourse.group/u/sterlinggold)\ **Post date:** [April 1, 2023, 7:51pm UTC](https://klipper.discourse.group/t/maximizing-speed-test-from-teachingtech/7588/3 "2023-04-01T19:51:53Z")
Thank you Eddy, I’m not after speed, rather calibration to find the best setting (i.e. I’d be fine if Klipper ends up being slower than Marlin). It appears though that on my settings there is some governor on the feedrate; as I know this actual printer can move faster and start under extruding. ---
**Author:** ![jakep\_82](https://avatars.discourse-cdn.com/v4/letter/j/ea666f/32.png) [@jakep\_82](https://klipper.discourse.group/u/jakep_82)\ **Post date:** [April 1, 2023, 8:33pm UTC](https://klipper.discourse.group/t/maximizing-speed-test-from-teachingtech/7588/4 "2023-04-01T20:33:04Z")
I opened your gcode in Prusaslicer, and it shows the entire print at 120mm/s. A quick look at the text in the file shows every layer is set to F7200 which confirms this is a gcode issue, not a Klipper issue. ---
**Author:** ![jakep\_82](https://avatars.discourse-cdn.com/v4/letter/j/ea666f/32.png) [@jakep\_82](https://klipper.discourse.group/u/jakep_82)\ **Post date:** [April 1, 2023, 8:47pm UTC](https://klipper.discourse.group/t/maximizing-speed-test-from-teachingtech/7588/5 "2023-04-01T20:47:10Z")
It appears to be a known issue, and it also appears that he’s not responded to this issue more than 5 months after people began reporting it. I would look for a different way to generate this test gcode, or you’ll need to manually edit the speeds which would be a bit tedious. > > > Notice no matter what values set in the interactive feedrate/speed table on http…s://teachingtechyt.github.io/calibration.html#speed it stays at lowest. eg for the default (20,30,40,50,60 tower) file the code generates all layers at 20 (F1200). As shown in the gcode: > for z=9.601 > G1 X76.259 Y68.866 Z9.601 E0.0396 F1200 ; custom feedrate > G1 X77.247 Y69.246 Z9.602 E0.0852 > G1 X78.146 Y69.481 Z9.604 E0.1253 > G1 X79.129 Y69.635 Z9.605 E0.1682 > For z=48.241 > G1 X76.359 Y68.811 Z48.241 E0.0420 F1200 ; custom feedrate > G1 X77.277 Y69.149 Z48.242 E0.0842 > G1 X78.227 Y69.387 Z48.244 E0.1264 > G1 X79.195 Y69.524 Z48.245 E0.1685 ---
**Author:** ![sterlinggold](https://avatars.discourse-cdn.com/v4/letter/s/dc4da7/32.png) [@sterlinggold](https://klipper.discourse.group/u/sterlinggold)\ **Post date:** [April 1, 2023, 9:09pm UTC](https://klipper.discourse.group/t/maximizing-speed-test-from-teachingtech/7588/6 "2023-04-01T21:09:34Z")
Thank you Jake! Appreciate the deep dive! ---
**Author:** ![EddyMI3D](https://yyz2.discourse-cdn.com/free1/user_avatar/klipper.discourse.group/eddymi3d/32/1981_2.png) [@EddyMI3D](https://klipper.discourse.group/u/EddyMI3D)\ **Post date:** [June 10, 2024, 3:08pm UTC](https://klipper.discourse.group/t/maximizing-speed-test-from-teachingtech/7588/7 "2024-06-10T15:08:56Z")
Closed on June 10, 2024, 3:08pm UTC