effector tilting into bed on print
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G32
Calibrated 6 factors using 10 points, deviation before 0.206 after 0.202Better?
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yes it is the Param
6 or 8 is ok 7 or 9 will try and adjust the rod length which if your using haydn's rods should be set correctly anyway
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Check this out!!!
G32
Calibrated 6 factors using 10 points, deviation before 0.206 after 0.206 -
@timvukman said in effector tilting into bed on print:
Check this out!!!
G32
Calibrated 6 factors using 10 points, deviation before 0.206 after 0.206That's a lot better than you were getting before. It's still a lot worse than is possible with the Smart Effector, so I suspect that either the carriages are out of alignment or the towers are not quite parallel to each other. If it's the carriages then the spirit level will probably show some varying tilt.
You can try printing with it, but you will need to use either a higher than normal first layer height, or mesh bed compensation.
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I am going to order a metal kit for the top and bottom frames. There are visible spaces that I can't get rid of on the current injection molded ones.
Would my original 80 steps / mm change for the M92 command?
My test prints are really unusual. I will send a calibration cube so I can see what I am physically getting, but I tried a couple of small items and I am getting puddles. The hotend is not going up quickly enough and the nozzle is plowing through previous layers.
Should I get rid of the microstepping?
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M92: the tower steps/mm depends on the number of teeth on the motor pulleys and on whether you have 1.8 or 0.9deg motors. 80 steps/mm is correct for 20 tooth GT2 pulleys and 1.8deg motors.
Microstepping: I recommend you use the default x16 with interpolation to 256 until you have the printer working well.
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Thanks
Motors are 1.8. 20 tooth, microstepping is 16. Interpolation is off.I'm going to try mesh bed compensation
Ran a test print. Way too much filament. Had to stop the print since it was bogged down in the cube.
X and Y dimensions appear pretty close. Z not doing well. Z height
DWC has extruder controls set at 1 mm feed amount and 1 mm feed rate. Extrusion slider is at 100%
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Watching the print. Z is climbing at .2 for each layer which is what is set my my slicer software (Simplify3d)
I guess I need to take apart the hotend so I can see what length is being extruded when I tell it to extrude 100mm
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Backed the filament out of the hot end.
Extruded 10mm and it advanced 40mm. Searching for my notes on adjusting.
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Extruder Adjusted
Printing Calibration Cube.
Print is looking very good. X and Y are 20mm.
I can't thank you all enough for the help and support that you have provided. You are all consistently knowledgeable and helpful every time I contact you.
My printer is completely silent except for the fans that are cooling the main board. There is no motor sound at all.
I am really very impressed with the Smart Effector.
Is there any way I can adapt my cartesian printer to support one of these? My current hot end is a square unit that mounts via screws through the top. It would be great to be able to bolt one of these on somehow.
(edited for spelling)
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I'm glad you got there eventually!
I guess you could mount a Smart Effector on a Cartesian printer, but it would take up quite a lot of room. You might want to look at the Precision Piezo, which is another type of nozzle-contact Z probe. I haven't used one, but several forum users have and can tell you more if you ask.
PS - is it possible that the bed is not quite at right angles to the towers? If so then it's worth trying 8-factor calibration (S8 on the final G30 command in bed.g instead of S6). I suggest you use 13 or 17 probe points, e.g. 9 or 12 around the periphery, 3 half way from the centre, and the centre.
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Thanks dc42. It is possible that the bed is not at right angles. I will try S8. I will search for the Precision Piezo.
I wrote my not just before heading out. The print did not complete. The nozzle stopped rising and there was evidence of skipping from the belts.
Time to order the metal frames. I will pick this printer up again later.
Thanks for all the help
Tim
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Hi:
I have now received and installed the aluminum corners for my printer. The lower ones are single thick pieces and the upper ones are the normal single thickness.
I had hoped that I had some sort of gap in the old plastic parts causing my issues. With the aluminum, everything is tight!
Auto Configuration is returning
G32
Calibrated 6 factors using 10 points, deviation before 0.071 after 0.066
5:32:20 PMG32
Calibrated 6 factors using 10 points, deviation before 0.075 after 0.067
2:02:38 PMG32
Calibrated 6 factors using 10 points, deviation before 0.071 after 0.058
I am surprised that these numbers are changing. I would have expected that they would settle out and then stay the same each time.I did try to print, which was not a good idea. I am not printing at the center of the bed, and the print height is not steady.
All ideas welcome
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The numbers change because the bed probe reading heights you are getting are varying by about 0.01mm. This is a very small amount, comparable with the size of a single 1/16 microstep if your delta printer uses 1.8deg motors.
If you are using M558 P5 with your Smart Effector, you may get slightly better results with M558 P8.
Although your calibration deviation is not as low as many users obtain, it should be good enough to print with. I used to print with a calibration deviation of 0.12mm before I upgraded my delta to linear rails and Smart Effector.
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@timvukman Just to re-iterate what dc42 said, those figures are good enough to print with. It's unlikely that you can see such a deviation with the naked eye, so something else must be going on.
I wonder if you have an old mesh bed compensation file that's being loaded at startup. Running G29 S2 will clear a pre-existing mesh.
It might also be a good idea to post your config.g, config-override.g and bed.g files.
adavidm
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@dc42. thanks for discussing the bed probe heights. I feel better about that now. I will try the M558 P8.
@adavidm I will clear the bed compensation file with G29 S2. The deviation that I am talking about is that the print started high in that it was not putting down filament. I was printing a configuration cube, and what I was getting was not cube shaped. The right rear corner seemed like it was following a radius, although I was well within my bed printing area.
The nozzle did dig into the masking tape at one point which I don't understand.; Configuration file for Duet WiFi (firmware version 1.20 or newer)
; executed by the firmware on start-up
;
; generated by RepRapFirmware Configuration Tool on Wed Jun 13 2018 16:33:57 GMT-0400 (Eastern Daylight Time); General preferences
G90 ; Send absolute coordinates...
M83 ; ...but relative extruder moves;*** The homed height is deliberately set too high in the following - you will adjust it during calibration.
M665 R80 L360.20 B80 H161.59 ; 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
M550 PMiniKossel ; Set machine name
M552 S1 ; Enable network
M587 S"BELL137" P"DAAE9D3D996E" I192.168.1.14 J192.168.1.254 K255.255.255.0 ; Configure access point and IP addresses. You can delete this line once connected
M586 P0 S1 ; Enable HTTP
M586 P1 S0 ; Disable FTP
M586 P2 S0 ; Disable Telnet; Drives
M569 P0 S1 ; Drive 0 goes forwards
M569 P1 S1 ; Drive 1 goes forwards
M569 P2 S1 ; Drive 2 goes forwards
M569 P3 S0 ; Drive 3 goes backwards
M350 X16 Y16 Z16 E16 I1 ; Configure microstepping without interpolation
M92 X80 Y80 Z80 E157.5 ; Set steps per mm
M566 X1200 Y1200 Z1200 E1200 ; Set maximum instantaneous speed changes (mm/min)
M203 X18000 Y18000 Z18000 E1200 ; Set maximum speeds (mm/min)
M201 X1000 Y1000 Z1000 E1000 ; 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 Z-0.1 S1 ; Set minimum Z; Endstops
M574 X2 Y2 Z2 S1 ; Set active high endstops; Z-Probe
M558 P5 R0.4 H20 F1200 ; Set Z probe type to unmodulated and the dive height + speeds
G31 P100 X0 Y0 Z-0.239 ; Set Z probe trigger value, offset and trigger height
M557 R80 S20 ; Define mesh grid; Heaters
M307 H0 B0 S1.00 ; Disable bang-bang mode for the bed heater and set PWM limit
M305 P0 T100000 B3950 C0 R4700 ; Set thermistor + ADC parameters for heater 0
M143 H0 S120 ; Set temperature limit for heater 0 to 120C
M305 P1 T100000 B4388 C0 R4700 ; Set thermistor + ADC parameters for heater 1
M143 H1 S280 ; Set temperature limit for heater 1 to 280C; Fans
M106 P0 S0 I0 F500 H-1 ; Set fan 0 value, PWM signal inversion and frequency. Thermostatic control is turned off
M106 P1 S0 I0 F500 H-1 ; Set fan 1 value, PWM signal inversion and frequency. Thermostatic control is turned off
M106 P2 S1 I0 F500 H1 T45 ; Set fan 2 value, PWM signal inversion and frequency. Thermostatic control is turned on; Tools
M563 P0 D0 H1 ; 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; Automatic power saving
M911 S10 R11 P"M913 X0 Y0 G91 M83 G1 Z3 E-5 F1000" ; Set voltage thresholds and actions to run on power loss; Custom settings are not configured
; Miscellaneous
T0 ; Select first tool
M501; This is a system-generated file - do not edit
; Delta parameters
M665 L360.200 R117.268 H159.487 B85.0 X-1.163 Y-2.244 Z0.000
M666 X0.425 Y3.690 Z-4.114 A0.00 B0.00
; Heater model parameters
M307 H0 A90.0 C700.0 D10.0 S1.00 V0.0 B0
M307 H1 A340.0 C140.0 D5.5 S1.00 V0.0 B0
M307 H2 A340.0 C140.0 D5.5 S1.00 V0.0 B0
M307 H3 A340.0 C140.0 D5.5 S1.00 V0.0 B0
M307 H4 A340.0 C140.0 D5.5 S1.00 V0.0 B0
M307 H5 A340.0 C140.0 D5.5 S1.00 V0.0 B0
M307 H6 A340.0 C140.0 D5.5 S1.00 V0.0 B0
M307 H7 A340.0 C140.0 D5.5 S1.00 V0.0 B0; bed.g file for RepRapFirmware, generated by Escher3D calculator
; 10 points, 6 factors, probing radius: 95, probe offset (0, 0)
G30 P0 X0.00 Y95.00 Z-99999 H0
G30 P1 X82.27 Y47.50 Z-99999 H0
G30 P2 X82.27 Y-47.50 Z-99999 H0
G30 P3 X0.00 Y-95.00 Z-99999 H0
G30 P4 X-82.27 Y-47.50 Z-99999 H0
G30 P5 X-82.27 Y47.50 Z-99999 H0
G30 P6 X0.00 Y47.50 Z-99999 H0
G30 P7 X41.14 Y-23.75 Z-99999 H0
G30 P8 X-41.14 Y-23.75 Z-99999 H0
G30 P9 X0 Y0 Z-99999 S6 -
one thing I notice from those files is that you have your bed set to 85mm radius but you are probing to 95mm are you sure you are actually getting a good probe when your Y hit the 95mm point's?
Doug
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@Doug1957
Thankyou. I did not spot that.I have set the radius to 95, and rerun the G29 command.
That would explain what the hot end was doing when I printed the configuration cube. It was rounding off the back corner based on my radius of 80.
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When I try printing an object, the nozzle is digging into the masking tape that I have on the bed.
In simplify3d, I am telling the printer to print at 0.20mm
I have first layer height at 90%
First layer width at 100%I have new rods coming that are shorter than my current rods and metal carriages to replace the plastic ones that are running up and down the vertical pillars.
How critical is belt tension? My belts are not as tight as I would like, but they are not skipping. I can pinch them anywhere along the travel length and the backs of the belts will touch with no real pressure needed. There is certainly no spring pushing back against my fingers.
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@timvukman said in effector tilting into bed on print:
G31 P100 X0 Y0 Z-0.239 ; Set Z probe trigger value, offset and trigger height
This line is saying that the probe is 0.239mm below the bed when triggered. This seems fairly high for the smart effector and could be causing the digging.
Z-0.1 is the recommended value and works well for me.
It sounds like you are getting there, keep going!
adavidm
