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Type: Posts; User: brucehvn

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  1. Replies
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    Volumetric Extrusion settings

    It's unclear to me after many Google searches exactly how to start with the built in volumetric extrusion of Marlin. I'm using Slic3r 1.2.9 and Marlin bugfix 1.1.x. Triffid Hunter's calibration...
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    They changed the Z_RAISE_BEFORE_PROBING to...

    They changed the Z_RAISE_BEFORE_PROBING to something a little different, at least in 1.1.0-RC6. It is now here:



    // @section homing
    #define MIN_Z_HEIGHT_FOR_HOMING 6 // (in mm) Minimal z...
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    Sticky: Roxy, I've got a question about how the z...

    Roxy, I've got a question about how the z position numbers are calculated in your M48 code compared to other commands. I've been battling a problem all day that started with a wire falling off my...
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    There is usually a setting in the firmware to...

    There is usually a setting in the firmware to prevent cold extrudes. This will keep the extruder motor from running unless the hotend temperature is above a certain threshold. It's not clear what...
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    The problem turned out to be my z offset for the...

    The problem turned out to be my z offset for the auto bed leveling. I had checked it and thought it was correct, but when I went back to level the bed manually, I found the offset was off by about...
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    Hi printbus, I am using the EEPROM, but the...

    Hi printbus,

    I am using the EEPROM, but the settings there are the same. I refreshed them after upgrading Marlin and verified in Repetier that they were correct. I use the EEPROM settings for...
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    Z-Height issues

    I built an i3 variant a little over a year ago and have been using it ever since. I've noticed that my prints are now not coming out at the proper Z height. It was losing about .25mm per 10mm of...
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    Sticky: Well, I've never seen that behavior. For homing...

    Well, I've never seen that behavior. For homing Z, I will see the message coming from the firmware that I have to home X and Y before Z if I haven't homed X and Y first. But I've never seen the...
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    Sticky: Well, I certainly don't see anything obvious in...

    Well, I certainly don't see anything obvious in there. You have this line:

    #define XY_TRAVEL_SPEED 8000 // X and Y axis travel speed between probes, in mm/min

    8000 seems a little...
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    Sticky: Can you post a copy of your Configuration.h file...

    Can you post a copy of your Configuration.h file before and after modifying it for ABL (the stock version of ABL). Maybe we can see something that's not quite right.
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    Sticky: Hmm, very strange. You mentioned this issue in...

    Hmm, very strange. You mentioned this issue in Pronterface. Have you actually tried to start a print (that does G29) and does it also move all the axes instead of just one?
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    Sticky: Did you install Roxy's enhanced bed levelling...

    Did you install Roxy's enhanced bed levelling code, or are you just using the standard ABL changes to the Configuration.h? If you are using Roxy's code, did ABL work properly before you added the...
  13. Replies
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    Sticky: In reality Z=0 should mean the nozzle is touching...

    In reality Z=0 should mean the nozzle is touching the bed. However, we usually calibrate the bed with the nozzle cold, so we allow for heat expansion by leaving just a paper width gap (or about...
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    Sticky: .35 is not a bad first layer height. Can you...

    .35 is not a bad first layer height. Can you paste about the first 25 lines of the generated gcode here, so we can see what Slic3r is outputting? And yes, if your first layer height is set to .35,...
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    Sticky: Ok, so in slic3r, what do you have your first...

    Ok, so in slic3r, what do you have your first layer height set to? Whatever that is, then look at the gcode generated and see what the first printing G1 command is that sets the Z height. It should...
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    Sticky: The EEPROM command should only be necessary if...

    The EEPROM command should only be necessary if you modify the z offset in the configuration.h file. It shouldn't be necessary every time you home the printer and try to print. The new z offset...
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    Sticky: Ok, this doesn't sound right at all. Something...

    Ok, this doesn't sound right at all. Something else is going on with your system. How much do you need to tweak the Z offset? The slicer should just be setting the initial Z to whatever your first...
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    Sticky: Ha, I was just about to point that out. ...

    Ha, I was just about to point that out. Brainscan beat me to my own post :)
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    Sticky: Hmm, that's not the way it works for me. I have...

    Hmm, that's not the way it works for me. I have my raise before homing set to 10mm and it always goes up 10mm no matter where it started from.
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    Sticky: What I don't think I saw in the conversation was...

    What I don't think I saw in the conversation was whether you were using the auto bed leveling code before adding Roxy's enhancements and if so, did the problem exist then?
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    Sticky: Well, I haven't actually done it myself, but it...

    Well, I haven't actually done it myself, but it appears the steps would be:

    First you need to have a github account and be signed in.

    Next, on the Marlin firmware main page...
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    Sticky: Roxy, Do you plan on making this a pull...

    Roxy,

    Do you plan on making this a pull request to Marlin so it gets into the codebase permanently?
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