First layer after remachining delta parts
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So, my first layer looked alllllllmost exactly like this before i reworked my entire delta 3d printer to try and get rid of the effector tilt.
I squared up by bed to my towers as best i could, one of them is slightly off but i got it closer. I think the bed isn't flat or is warped or something.
I remachined the carriage tops that the magballs attach to and machined a fixture to align the balls to within +-.002” of eachother.
I machined new magball effector attachments as well and machined a fixture to align them to the same position and tollerance.
I made a fixture to ensure all pieces are flat to eachother as well.I machined 3 “C” channels that i clamp to the effector to measure tilt and parallelism to the bed.
It’s dead nuts perfect in 4 out of 6 positions (near tower, away from tower x3) and the 2 positions are near the tower where the bed seems to have issues.Made fixtures for new magball rods for the same tolerance and for repeatability.
Got a bullseye bubble level and found the effector is dead nuts, pretty much no tilt.
Ran a mesh bed level and what used to be +-1-2mm out is now .02mm out max. Mostly in the known problem area.
Good.
Then i run a first layer test and i get inconsistent extrusion, its decent in some areas and underextruded in others. Also, my solid infill and shells are not connected and i cant seem to change a setting that will change this.
Any help would be appreciated to help me dial this in.
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hey,
- Have you established a Z=0 datum? e.g. G30
- Have you loaded the height map before printing? G29 S1 https://duet3d.dozuki.com/Wiki/Using_mesh_bed_compensation
- Extruder calibrated?
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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?
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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.... -
Have a good read of these?
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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.
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@Phaedrux and yes, I've read and followed both of those pages word for word over 5 times now.
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Share all your config files and slicer start gcode?
Firmware version? what duet board? -
@gperman
Do you have a predator by any chance?Owns various duet boards and is the main wiki maintainer for the Teamgloomy LPC/STM32 port of RRF. Assume I'm running whatever the latest beta/stable build is
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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
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@jay_s_uk yes I do.
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@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 readPrusaSlicer start G-code:
G28 ; home all axes G1 Z5 F5000 ; lift nozzle
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Take G28 out of your start Gcode
Are you calibrating before every print attempt them loading your print file? -
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?
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This post is deleted! -
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:
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.
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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. -
Sorry run the G32 let it finish calibration then M665 from the console then M500 from the console then check the file.
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@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.
