@norder
Yes the measurements were taken from the printed hexagon (side to side length of 75 mm as per design).
Is the shrinkage uniform on all 3 sides ?
I am trying to reduce the length-difference amongst all sides. Once the dimensions are precise (equal on all sides), I can play with diagonal rod length or M579 to get the dimension accurate if required.
@phaedrux
Okay.
If I change the calibration routine from S6 to S7 or S8 or if there is a hardware change, do I need to delete the config-override.g before calibration ?
I did as per the instruction. I did the S6 calibration.
The new dimensions of the hexagon are:
Against tower Z: 74.52 mm
Against tower X: 74.62 mm
Against tower Y: 74.90 mm
Surprisingly, the max deviation has come down to 0.38 mm from 1 mm, which is still a huge deviation.
Shall I try a S7 calibration ?
Bed - bed.g
Configuration - config.g
Config override - config-override.g
Homing - homedelta.g
M98 P"config.g"
Turn off the current WiFi mode before selecting a new one
HTTP is enabled on port 80
FTP is disabled
TELNET is disabled
Warning: Heater 1 predicted maximum temperature at full power is 500°C
M122
=== Diagnostics ===
RepRapFirmware for Duet 2 WiFi/Ethernet version 3.4.0 (2022-03-15 18:58:31) running on Duet WiFi 1.02 or later
Board ID: 0JD0M-9X6JA-JUNSN-6JKFJ-3SD6K-T9R3U
Used output buffers: 3 of 24 (13 max)
=== RTOS ===
Static ram: 23868
Dynamic ram: 73872 of which 36 recycled
Never used RAM 14304, free system stack 184 words
Tasks: NETWORK(ready,13.0%,243) HEAT(notifyWait,0.0%,316) Move(notifyWait,0.0%,364) MAIN(running,86.2%,448) IDLE(ready,0.8%,30), total 100.0%
Owned mutexes: WiFi(NETWORK)
=== Platform ===
Last reset 00:02:12 ago, cause: power up
Last software reset time unknown, reason: User, GCodes spinning, available RAM 14184, slot 2
Software reset code 0x0003 HFSR 0x00000000 CFSR 0x00000000 ICSR 0x0041f000 BFAR 0xe000ed38 SP 0x00000000 Task MAIN Freestk 0 n/a
Error status: 0x00
Aux0 errors 0,0,0
Step timer max interval 0
MCU temperature: min 25.0, current 30.6, max 31.1
Supply voltage: min 23.8, current 24.1, max 24.4, under voltage events: 0, over voltage events: 0, power good: yes
Heap OK, handles allocated/used 0/0, heap memory allocated/used/recyclable 0/0/0, gc cycles 0
Events: 0 queued, 0 completed
Driver 0: standstill, SG min n/a
Driver 1: standstill, SG min n/a
Driver 2: standstill, SG min n/a
Driver 3: standstill, SG min n/a
Driver 4: standstill, SG min n/a
Driver 5:
Driver 6:
Driver 7:
Driver 8:
Driver 9:
Driver 10:
Driver 11:
Date/time: 2022-10-08 10:42:57
Cache data hit count 4294967295
Slowest loop: 6.34ms; fastest: 0.18ms
I2C nak errors 0, send timeouts 0, receive timeouts 0, finishTimeouts 0, resets 0
=== Storage ===
Free file entries: 10
SD card 0 detected, interface speed: 20.0MBytes/sec
SD card longest read time 3.7ms, write time 0.0ms, max retries 0
=== Move ===
DMs created 83, segments created 0, maxWait 0ms, bed compensation in use: none, comp offset 0.000
=== MainDDARing ===
Scheduled moves 0, completed 0, hiccups 0, stepErrors 0, LaErrors 0, Underruns [0, 0, 0], CDDA state -1
=== AuxDDARing ===
Scheduled moves 0, completed 0, hiccups 0, stepErrors 0, LaErrors 0, Underruns [0, 0, 0], CDDA state -1
=== Heat ===
Bed heaters 0 -1 -1 -1, chamber heaters -1 -1 -1 -1, ordering errs 0
=== GCodes ===
Segments left: 0
Movement lock held by null
HTTP is idle in state(s) 0
Telnet is idle in state(s) 0
File is idle in state(s) 0
USB is idle in state(s) 0
Aux is idle in state(s) 0
Trigger is idle in state(s) 0
Queue is idle in state(s) 0
LCD is idle in state(s) 0
Daemon is idle in state(s) 0
Autopause is idle in state(s) 0
Code queue is empty
=== Network ===
Slowest loop: 15.93ms; fastest: 0.00ms
Responder states: HTTP(0) HTTP(0) HTTP(0) HTTP(0) FTP(0) Telnet(0), 0 sessions
HTTP sessions: 1 of 8
I have a custom built 3D printer with a Duet 2 Wifi and Smart Effector.
For dimensional calibration, I 3D printed a hexagon of side-to-side length of 75 mm.
Here is the dimension after printing:
Against tower Z: 75.00 mm
Against tower X: 75.60 mm
Against tower Y: 74.50 mm
(Almost upto 1 mm variation)
I have tried calibrating using S6, S7 and S8 factor. The value of each length changes but the relative difference in dimension upto 1 mm remains.
I have checked the length of diagonal rods multiple times. They are all equal. I have also printed two cubes of height 20 mm and 120 mm. The steps per mm are correct.
What is that I am missing? How can I rectify this issue ?
I have attached the image of printed hexagon.
Kind Regards
[link text](link url)