Cramer’s MP3DP

This topic contains 149 replies, has 7 voices, and was last updated by  Jeffeb3 9 months ago.

Viewing 30 posts - 61 through 90 (of 150 total)
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  • #80975

    Brandon
    Participant

    On this coupler should the T8 lead screw go all the way down until it bottoms out and then the rest is for the stepper motor? If I put my fingers on the T8 lead screws while moving it up or down it gets quiet.

    #80978

    Brandon
    Participant

    There is a lot of play in my T8 Lead Screw Nut on the right. 🙁

    #80984

    Ryan
    Keymaster

    Just get it together, level the XZ axis, then bed and try it out.

    #82618

    Brandon
    Participant

    Am I doing this right?

    2019-01-07-16.37.43

     

    #82620

    Ryan
    Keymaster

    Perfect! 😯

     

    While you have it out have a look at my new extruder setup pics, there is a better way.

    #82625

    Brandon
    Participant

    Looks like I have a lot of room for improvement. Quick question though. Does the nut go inside with the gears or outside by the heater?

    #82631

    Ryan
    Keymaster

    inside

    1 user thanked author for this post.
    #82790

    Brandon
    Participant

    I seem to have trouble extruding. Temp 210

    https://www.dropbox.com/s/jjchm6nszwh0dun/2019-01-08%2015.54.01.mov?dl=0

     

     

    #82819

    Ryan
    Keymaster

    It sounds like your gear might be hitting the throat?

    #82853

    Brandon
    Participant

    It doesn’t look like they are touching. It seems like it doesn’t have enough power to push the filament through.

    2019-01-09-09.09.12

    #82856

    Ryan
    Keymaster

    Loose wire? That clicking is not normal. You can turn up the current a little bit to the extruder. Make sure the temp is good, does it feed good with your fingers?

    #82859

    Ryan
    Keymaster

    It actually looks like the step rate is wrong. Mine never shoots out like that it comes out pretty slow.

    #82860

    Jeffeb3
    Participant

    You’ve got a rambo with the setting at 900mA, though, right? That should be plenty. It’s also possible something else is wrong. Can you push the filament through easily enough when you hold down the lever?

    #82861

    Jeffeb3
    Participant

    errr…mini rambo.

    #82863

    Jeffeb3
    Participant

    Another place that could be making that sound is if there isn’t enough tension on it.

    But if there’s something causing a clog, like the wrong steps or temperature table, then the skipping is the symptom, not the cause.

    #82864

    Brandon
    Participant

    I have trouble pushing the filament through by hand. I managed to touch the hotend and it’s definitely hot!

    #82866

    Jeffeb3
    Participant

    #define TEMP_SENSOR_0 11 // 11-MK8 5-Aero

    From Ryan’s firmware. If you have 5 for some reason, the temp is wrong. Anything over boiling would probably feel hot to a finger.

    #82867

    Ryan
    Keymaster

    For some reason people think CNC is more difficult that 3D printers….no way.

    #82868

    Jeffeb3
    Participant

    The CNC machines are easier, but the slicer is easier than CAM. Sure would be nice if it wasn’t but…

    #82875

    Josh
    Participant

    Would it matter who’s filiment is being used? I am printing Maker Geeks at 235 and might go to 240

    #82880

    Brandon
    Participant

    #define TEMP_SENSOR_0 11 // 11-MK8 5-Aero

    From Ryan’s firmware. If you have 5 for some reason, the temp is wrong. Anything over boiling would probably feel hot to a finger.

    Looks like it is set to 5:

    #define TEMP_SENSOR_0 5 // 11-MK8 5-Aero

    What is the best way to change it?

    #82881

    Brandon
    Participant

    3d Printers are a pain in the…. That is why I need 3 different ones… and want more. 🙂

     

    #82884

    Jeffeb3
    Participant

    What is the best way to change it?

    Did you flash it yourself? You need to change it and reflash.

    AFAIK, there isn’t a way to change that in EEPROM, it includes a different temp table when you change that.

    Run M503 first and save the output. I try to make sure any EEPROM settings I change in the firmware when I make them so the next flash is right.

    #82909

    Brandon
    Participant

    I flashed it myself. I made the change to 11 but still have the same issue. Filament does seem to go through but takes some pressure to get it through.

    I’m not sure if this is helpful:

    11:26:27.067 : echo:Hardcoded Default Settings Loaded
    11:26:27.067 : echo: G21 ; Units in mm (mm)
    11:26:27.067 : echo: M149 C ; Units in Celsius
    11:26:27.067 : echo:Filament settings: Disabled
    11:26:27.072 : echo: M200 D1.75
    11:26:27.072 : echo: M200 D0
    11:26:27.072 : echo:Steps per unit:
    11:26:27.076 : echo: M92 X100.00 Y100.00 Z400.00 E837.00
    11:26:27.076 : echo:Maximum feedrates (units/s):
    11:26:27.076 : echo: M203 X150.00 Y150.00 Z15.00 E24.00
    11:26:27.080 : echo:Maximum Acceleration (units/s2):
    11:26:27.080 : echo: M201 X2000.00 Y2000.00 Z100.00 E3000.00
    11:26:27.084 : echo:Acceleration (units/s2): P<print_accel> R<retract_accel> T<travel_accel>
    11:26:27.084 : echo: M204 P2000.00 R3000.00 T2000.00
    11:26:27.088 : echo:Advanced: B<min_segment_time_us> S<min_feedrate> T<min_travel_feedrate> J<junc_dev>
    11:26:27.092 : echo: M205 B20000.00 S0.00 T0.00 J0.02
    11:26:27.092 : echo:Home offset:
    11:26:27.092 : echo: M206 X0.00 Y0.00 Z0.00
    11:26:27.096 : echo:Material heatup parameters:
    11:26:27.096 : echo: M145 S0 H196 B62 F0
    11:26:27.096 : echo: M145 S1 H240 B110 F0
    11:26:27.096 : echo:PID settings:
    11:26:27.100 : echo: M301 P17.98 I0.98 D83.62
    11:26:27.100 : echo:Stepper motor currents:
    11:26:27.100 : echo: M907 X750 Z750 E950

    #82947

    Ryan
    Keymaster

    You need to change the Z steps as well. the thermistor and Z steps go together,

    #82978

    Brandon
    Participant

    Alright. Now we are getting somewhere.

    Is there a PID tutorial for the MP3DP?

    I see a calibration cube printing now… 🙂

    #82984

    Ryan
    Keymaster

    Is there a PID tutorial for the MP3DP?

    ?

    #82991

    Bill
    Participant

    IIRC there an auto PID tune gcode command…

    #82992

    Jeffeb3
    Participant

    M303:

    http://marlinfw.org/docs/gcode/M303.html

    It’s pretty simple, actually. Don’t be intimidated. There is a Tom video on it somewhere though.

    Should be something like:

    M303 S210 U1

    <wait>…put these numbers in your firmware Configuration.h…

    M500

    #82995

    Brandon
    Participant

    Before:

    echo:PID settings:
    echo: M301 P17.98 I0.98 D83.62

    After:

    PID Autotune finished! Put the last Kp, Ki and Kd constants from below into Configuration.h
    #define DEFAULT_Kp 15.64
    #define DEFAULT_Ki 1.01
    #define DEFAULT_Kd 60.56

    So I need to add these to the Configuration.h file and flash the firmware to the RamBo now I guess.

    My first print off the MP3dP:

    2019-01-09-15.02.28

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