What's new
VORON Design

Register a free account today to become a member! Once signed in, you'll be able to participate on this site by adding your own topics and posts, as well as connect with other members!

Accuracy Charts Interpretation

Is there anyone that can help me interpret these charts? Maybe this could be a good start of a thread on how to interpret them? I think I'm failing to understand them, or failing to perform them correctly, or both. These were taken today with a cool bed/chamber. It seems like the first couple probes are really inaccurate and then it settles in and becomes very accurate. I've checked all my grub screws on Z motors. Checked tightness of Z belts (just pushing with finger and making sure all were similar). I have a classic bed mount, not kinematic. I have the z0 (front left) screw *tight* and the other three are barely tightened (but not loose).

Do these tests need to be performed after a heat soak? Going to try this and post results.

Physical Build
  • 250mm v2.4r2 (upgraded from r1)
  • Stealthburner with Voron Revo
  • Bed: Cast Aluminum Tool & Jig Plate (ALI516/MIC6/ATP5) 5/16" thick
  • X rail: Hiwin MGN12H
  • A/B motors: LDO-42STH48-2504AC
  • Z motors: OMC 17HS19-2004S1
  • Mods:
    • TI backers
    • Rama idlers
    • Pins mod (only X/Y, not Z)
[stepper_z] rotation_distance: 40 gear_ratio: 80:16 microsteps: 32 endstop_pin: probe:z_virtual_endstop homing_speed: 15 second_homing_speed: 2 homing_retract_dist: 2 [tmc2209 stepper_z] uart_pin: PC4 interpolate: true run_current: 0.8 sense_resistor: 0.110 stealthchop_threshold: 0 [heater_bed] sensor_type: NTC 100K MGB18-104F39050L32 max_power: 0.6 min_temp: 0 max_temp: 123 pwm_cycle_time: 0.0166

Cold Chamber, Cold Bed, Cold Nozzle
20221223_1212_corner_test(box).png
20221223_1212_corner_test.png
20221223_1212_drift_test.png
20221223_1212_repeatability_test(box).png
20221223_1212_repeatability_test.png

120 Bed, 50+ Chamber, 150 Nozzle
Here are the results after a good heat soak. I stopped heatsoaking when the chamber temperature stabilized at 54.6°C without fluctuation for 20 minutes. That was roughly two hours.

20221223_1521_corner_test(box).png
20221223_1521_corner_test.png
20221223_1521_drift_test.png
20221223_1521_repeatability_test(box).png
20221223_1521_repeatability_test.png
 
Last edited:
Top