First layer after remachining delta parts

gperman

I’m not quite sure on the z=0 datum so probably no on that.

I did load the heightmap and i did PID calibrate the nozzle heater.

What’s the procedure for z=0 datum g30?

gperman

So I performed G92 Z=0 and loaded the mesh bed map.

Now every time I need to change baby stepping up by .6-.8mm or the nozzle touches...
I'm really perplexed on how to calibrate this.
If I increase the H variable in M665 by .6 the nozzle starts way too high....

Phaedrux

Have a good read of these?

https://duet3d.dozuki.com/Wiki/Calibrating_a_delta_printer

https://duet3d.dozuki.com/Wiki/Using_mesh_bed_compensation

gperman

I can't get this delta printer to operate even halfway correctly and I've already spent 3x the pricetag. I've run G32, G29, G29 S-1. Manually compensated Z probe trigger heights at all probe points.

I've taken the arms off and remeasured and aligned all the magballs. Every dimension is within .002" to eachother.

I really don't understand what's going on and how precise this needs to be to get a halfway decent print. Every time I change something, the first layer test is bad in a different way.

gperman

@Phaedrux and yes, I've read and followed both of those pages word for word over 5 times now.

gperman

Phaedrux

Share all your config files and slicer start gcode?
Firmware version? what duet board?

jay_s_uk

@gperman
Do you have a predator by any chance?

fcwilt

Hi,

I worked and worked on my 3 delta's trying to get really good results.

Then I got an FolgerTech FT-5.

That worked so well with so little effort I scrapped the delta's for parts.

Frederick

gperman

@jay_s_uk yes I do.

gperman

@Phaedrux homedelta.g heightmap.csv config.g config-override.g bed.g

; Configuration file for Duet WiFi (firmware version 3)
; executed by the firmware on start-up
;
; generated by RepRapFirmware Configuration Tool v2.1.8 on Sun Apr 05 2020 18:40:43 GMT-0400 (Eastern Daylight Time)

; General preferences
G90                                                ; send absolute coordinates...
M83                                                ; ...but relative extruder moves
M550 P"Anycubic Predator"                          ; set printer name
M665 R211.7 L440 B185 H433.0                      ; Set delta radius, diagonal rod length, printable radius and homed height
M666 X0 Y0 Z0                                      ; put your endstop adjustments here, or let auto calibration find them

; Network
M552 S1                                            ; enable network
M586 P0 S1                                         ; enable HTTP
M586 P1 S0                                         ; disable FTP
M586 P2 S0                                         ; disable Telnet
; Drives
M569 P0 S1                                         ; physical drive 0 goes forwards
M569 P1 S1                                         ; physical drive 1 goes forwards
M569 P2 S1                                         ; physical drive 2 goes forwards
M569 P3 S1                                         ; physical drive 3 goes forwards
M584 X0 Y1 Z2 E3                                   ; set drive mapping
M350 X16 Y16 Z16 E16 I1                            ; configure microstepping with interpolation
M92 X80.00 Y80.00 Z80.00 E406.90                   ; set steps per mm
M566 X1200.00 Y1200.00 Z1200.00 E1200.00           ; set maximum instantaneous speed changes (mm/min)
M203 X18000.00 Y18000.00 Z18000.00 E1200.00        ; set maximum speeds (mm/min)
M201 X1000.00 Y1000.00 Z1000.00 E1000.00           ; set accelerations (mm/s^2)
M906 X1000 Y1000 Z1000 E800 I30                    ; set motor currents (mA) and motor idle factor in per cent
M84 S30                                            ; Set idle timeout

; Axis Limits
M208 Z0 S1                                         ; set minimum Z

; Endstops
M574 X2 S1 P"xstop"                                ; configure active-high endstop for high end on X via pin xstop
M574 Y2 S1 P"ystop"                                ; configure active-high endstop for high end on Y via pin ystop
M574 Z2 S1 P"zstop"                                ; configure active-high endstop for high end on Z via pin zstop

; Z-Probe
M558 P5 C"zprobe.in" H2 F100 T15000                 ; set Z probe type to switch and the dive height + speeds
G31 P1000 X0 Y0 Z16.819                            ; set Z probe trigger value, offset and trigger height
M557 R170 S17                                      ; define mesh grid

; Heaters
M308 S0 P"bedtemp" Y"thermistor" T100000 B4138     ; configure sensor 0 as thermistor on pin bedtemp
M950 H0 C"bedheat" T0                              ; create bed heater output on bedheat and map it to sensor 0
M143 H0 S120                                       ; set temperature limit for heater 0 to 120C
M307 H0 B0 S1.00                                   ; disable bang-bang mode for the bed heater and set PWM limit
M140 H0                                            ; map heated bed to heater 0
M308 S1 P"e0temp" Y"thermistor" T100000 B3950      ; configure sensor 1 as thermistor on pin e0temp
M950 H1 C"e0heat" T1                               ; create nozzle heater output on e0heat and map it to sensor 1
M143 H1 S280                                       ; set temperature limit for heater 1 to 280C
M307 H1 B0 S1.00                                   ; disable bang-bang mode for heater  and set PWM limit

; Fans
M950 F0 C"fan0" Q500                               ; create fan 0 on pin fan0 and set its frequency
M106 P0 S0 H-1                                     ; set fan 0 value. Thermostatic control is turned off
M950 F1 C"fan1" Q500                               ; create fan 1 on pin fan1 and set its frequency
M106 P1 S1 H1 T45                                  ; set fan 1 value. Thermostatic control is turned on

; Tools
M563 P0 D0 H1 F0                                   ; define tool 0
G10 P0 X0 Y0 Z0                                    ; set tool 0 axis offsets
G10 P0 R0 S0                                       ; set initial tool 0 active and standby temperatures to 0C

; Custom settings are not defined

; Miscellaneous
M911 S10 R11 P"M913 X0 Y0 G91 M83 G1 Z3 E-5 F1000" ; set voltage thresholds and actions to run on power loss
M501						   ; Allows stored parameters to be read

PrusaSlicer start G-code:

G28 ; home all axes
G1 Z5 F5000 ; lift nozzle

Screen Shot 2020-05-29 at 9.31.52 AM.png

Carlo

@gperman

Take G28 out of your start Gcode
Are you calibrating before every print attempt them loading your print file?

Phaedrux

When you send G28 to home it's calling homedelta which is moving all the carriages to the endstops. This is clearing your calibration.

When are you running G32 to call your bed.g file?

https://duet3d.dozuki.com/Wiki/Calibrating_a_delta_printer#Section_Auto_calibrating_before_each_print

gperman

This post is deleted!

gperman

@Phaedrux

So I was getting a lot of assistance today from Jay_s_uk which helped a little. He gave me his bed calibration file to try and I updated the firmware to the 3.1.1 zip whole package.
None of it really helped my issues really but it was good info.

Much thanks to him and everyone helping me out with this.

So, What I do is run Autocalibration G32 3 times than upload the results using M500. Then I run Mesh bed leveling G29 once and upload it G29 S1. Then I home the machine by hitting home all and then start the G-Code.

You're saying every time the machine is homed it clears the calibration? I didn't know this. Why does it clear the calibration? I suppose I will have to stop homing the machine before prints.
Should I just include the Bed.g code+M500 in my slicer code upon startup so It runs a calibration before every print?

Should I mesh bed level every print or just G32?

What do ya'll use for bed calibration?

I have a smart effector en route but it will take a while to get that up and running.

Also, here is the quality prints i've been dealing with:
unnamed (2).jpg unnamed (1).jpg

First layer is too close to the bed inconstantly and has gaps between shell and infill. Dimensional stability is AWFUL. Circles are not circles, straight lines wander around. Top layer is EXTREMELY underextruded.

I PID calibrated the nozzle 5 times and bed the same. Changed hot end to Mosquito, no change. Changed heater cartridge to mosquito, no change. Changed thermister to filamentone high temp cartridge. Received calibration data from them for the cartridge, no change. New fans, no change. Capricorn bowden, no change. Bondtech extruder assembly, changed steps to match, no change.

I changed extrusion multiplier up, down and all around, no change.

Carlo

@gperman

Hi gperman,

Can you delete the config_override raise the Rin your config to R231.750 then restart the board to make sure it takes effect
Then run G28, then heat the bed to 60c and hot end to 130c run G32 M665 M500 and check the Radius R of the new config_override see if it has changes please.

Carlo

@Carlo

Sorry run the G32 let it finish calibration then M665 from the console then M500 from the console then check the file.

Phaedrux

@gperman said in First layer after remachining delta parts:

Then I home the machine by hitting home all and then start the G-Code.

When you do that you're resetting the position of where the firmware thinks the bed based on the location of the endstops which are never 100% accurate. You need to establish where the bed is with G30 before starting the print and before doing the mesh.

gperman

@Carlo said in First layer after remachining delta parts:

M6

Ok. I will try this tomorrow

Carlo

@gperman

Make sure you take G29 S1 out of your bed file and anywhere else you may have put it and delete your heightmap.cv file you will need to remake a new one when you get your probing sorted but that is probably hindering you at the moment so best get rid and remove all your start gcode from your slicer for now as its wrong we can sort that once your probing is accurate.
Also are you sure your rod length is exactly 440. not 440.### something ?