Geeetech A20M User Manual
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Geeetech A20M User Manual

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SHENZHEN GETECH TECHNOLOGY CO., LTD
Geeetech A20M 3D Printer
User Manual
(V2.0)
1

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Summary of Contents for Geeetech A20M

  • Page 1 SHENZHEN GETECH TECHNOLOGY CO., LTD Geeetech A20M 3D Printer User Manual (V2.0)

  • Page 2: Table Of Contents

    SHENZHEN GETECH TECHNOLOGY CO., LTD Content 1 Attention ..........................3 1.1 Safety instructions ....................... 3 1.2 Factory test before delivery ..................3 2 Printer display ........................4 3 Assembling ..........................8 3.1 Assembling the main frame ..................8 3.2 Wire connection ......................10 3.3 Check the power input mode ..................

  • Page 3: Attention

    SHENZHEN GETECH TECHNOLOGY CO., LTD 1 Attention 1.1 Safety instructions  Please switch to the correct local voltage (110V-220V) before turning on the printer. Be sure the switch is in the correct position or it will damage the power supply unit (PSU). ...

  • Page 4: Printer Display

    SHENZHEN GETECH TECHNOLOGY CO., LTD 2 Printer display (Picture 2-1)
  • Page 5 SHENZHEN GETECH TECHNOLOGY CO., LTD (Picture 2-2)
  • Page 6 SHENZHEN GETECH TECHNOLOGY CO., LTD (Picture 2-3)
  • Page 7 SHENZHEN GETECH TECHNOLOGY CO., LTD (Picture 2-4) Gantry frame LCD12864 screen Knob Reset button Y axis Base Z axis end stop X axis end stop Filament spool holder 10. Teflon tube 11. Extruder head 12. Hot bed 13. X axis motor 14.

  • Page 8: Assembling

    SHENZHEN GETECH TECHNOLOGY CO., LTD Please check the accessories first when you’ve received the printer (Refer to picture 2-5). If missing any spare part, please contact your sales representative. (Picture 2-5) 3 Assembling 3.1 Assembling the main frame The main frame consists of the gantry frame and the base, extruders, spool holder, and screws. See picture (3-1).
  • Page 9 SHENZHEN GETECH TECHNOLOGY CO., LTD (Picture 3-1)  Assemble the gantry frame and base from bottom to top with 4 M5x35 screws and 4 M5 spring washers. See picture (3-2). (Picture 3-2)  Assemble and fix the two sets of extruder units to the back side of the top gantry as shown in picture (3-3).

  • Page 10: Wire Connection

    SHENZHEN GETECH TECHNOLOGY CO., LTD (Picture 3-3)  Fix the spool holders to the top gantry with 2 M3x6 screws and 2 M3 T-shape nuts. Details see picture (3-4). (Picture 3-4) 3.2 Wire connection  Insert the two Teflon tubes into the quick-insert connector of the two extruders respectively. Details see picture (3-5).
  • Page 11 SHENZHEN GETECH TECHNOLOGY CO., LTD (Picture 3-5)  Plug the extruder cables into the molex socket of the extruder head extension board firmly. See picture (3-6). (Picture 3-6)  Connect the motor wires of E0 and E1. See picture (3-7). (Picture 3-7) ...
  • Page 12 SHENZHEN GETECH TECHNOLOGY CO., LTD (Picture 3-8)  Connect the wires of Y axis’ motor and end stop. See picture (3-9). (Picture 3-9)  Connect the wires of Z axis’ motor and end stop. See picture (3-10).

  • Page 13: Check The Power Input Mode

    SHENZHEN GETECH TECHNOLOGY CO., LTD (Picture 3-10) 3.3 Check the power input mode The factory default voltage is 220V. You need to choose the correct voltage according to your local standard requirement. See picture (3-11) Note: Be sure the voltage is switched to the correct one. (Picture 3-11)

  • Page 14: Check The Filament

    SHENZHEN GETECH TECHNOLOGY CO., LTD 3.4 Check the filament Put the filament on the spool holder. Please pay attention to the feeding direction of the filament. See picture (3-12). (Picture 3-12) Since the filament is bent, the first section of it needs to be straightened by hand and trimmed to make it easier to insert the filament into the feeder.
  • Page 15 SHENZHEN GETECH TECHNOLOGY CO., LTD (Picture 3-13) When print PLA, set the target nozzle temperature about 180-210℃. When the temp is stable, control the extruder filament feeding on LCD screen (“Move axis”), feed until there is molten material flowing from the nozzle. Observe the nozzle, if there is no filament stuck and the filament is coming out smoothly, then stop filament feeding, clear the nozzle with tweezers.

  • Page 16: First Print

    SHENZHEN GETECH TECHNOLOGY CO., LTD 4 First print 4.1 Level the print bed The first layer is key to a successfully printed model. The factory default setting is a little high in order to avoid scratching the hotbed with the nozzle, so users need to adjust the distance between nozzle and hotbed again.
  • Page 17 SHENZHEN GETECH TECHNOLOGY CO., LTD (Picture 4-3)  Accurate leveling If you level the bed with A4 paper, the first layer maybe too high, too low or moderate. a. Too high: the distance between the nozzle and bed is too far, which may cause the filament to not stick or not stick well.

  • Page 18: Sd Card Printing

    Avoid the nozzle touching the bed; use a piece of A4 paper. Or it will scratch the bed. For more details, please refer to this link: http://geeetech.com/forum/viewtopic.php?f=112&t=62296 4.2 SD card printing Insert the SD card into the slot. See picture (4-8).
  • Page 19 SHENZHEN GETECH TECHNOLOGY CO., LTD (Picture 4-9) Choose the files in the SD card. See picture (4-10). (Picture 4-10) The printer will heat automatically. See picture (4-11). (Picture 4-11) When heating done, the printer will start printing. See picture (4-12, 4-13).
  • Page 20 SHENZHEN GETECH TECHNOLOGY CO., LTD (Picture 4-12) (Picture 4-13)

  • Page 21: Introduction To The Lcd Menu

    SHENZHEN GETECH TECHNOLOGY CO., LTD 5 Introduction to the LCD menu 5.1 Tree diagram (Picture 5-1)

  • Page 22: Main Functions

    SHENZHEN GETECH TECHNOLOGY CO., LTD 5.2 Main functions LCD rotating knob:  Press the knob: Confirm or enter the next menu.  Rotate the knob: Roll the select options or change parameters. LCD homepage, see picture (5-2): Extruder temperature: Current temp/target temp Hot bed temperature: Current temp/target temp Extruder head blower status Current Z axis value...
  • Page 23 SHENZHEN GETECH TECHNOLOGY CO., LTD (Picture 5-3) (Picture 5-4) The main functions of Prepare menu (Picture 5-5, 5-6):  Move axis: Move X/Y/Z axis and Extruder  Auto home: X/Y/Z axis auto homing  Disable steppers: Unlock motors  Change filament: Change filament ...
  • Page 24 SHENZHEN GETECH TECHNOLOGY CO., LTD (Picture 5-6) The main functions of Control menu (Picture 5-7, 5-8):  Temperature: Change the temp of the hot bed and extruder in real time during printing. Customize the temp of preheat PLA and preheat ABS. ...
  • Page 25 SHENZHEN GETECH TECHNOLOGY CO., LTD The main functions of Mixer menu: Mx: Fixed mix ratio, see picture (5-9). (Picture 5-9) ∧ : Automatically change mix ratio, see picture (5-10). (Picture 5-10) Mixer menu offers two mix-printing options, namely fixed mix ratio printing and variable mix ratio printing.
  • Page 26 SHENZHEN GETECH TECHNOLOGY CO., LTD (Picture 5-11) (Picture 5-12) (Picture 5-13) “Toggle mix”: If you need to quickly switch the ratio between E0 and E1, you can select this function to switch, see picture (5-14)
  • Page 27 SHENZHEN GETECH TECHNOLOGY CO., LTD (Picture 5-14) Set variable mix ratio First, you need to get the current z-axis coordinate, which can be found on the screen, details see picture (5-15). (Picture 5-15) Choose “Gradient” to set the variable mix ratio, details see picture (5-16). (Picture 5-16) “Gradient mix”: Adjust the filament ratio of E0 and E1.
  • Page 28 SHENZHEN GETECH TECHNOLOGY CO., LTD (Picture 5-17) (Picture 5-18) “start Z”: The starting position (z-axis height) of automatic change of mixing; automatically change the mix based on the current Z height obtained in the previous step. “end Z”: The end of automatic change of mixing (z-axis height). Choose “start z”...
  • Page 29 SHENZHEN GETECH TECHNOLOGY CO., LTD (Picture 5-20) Choose “Auto home” to home the printer, see picture (5-21). (Picture 5-21) Choose “Move axis” to move motors. See picture (5-22) (Picture 5-22) Choose from “Move X/Y/Z/Extruder1/Extruder2” and rotate the knob to move them. See picture (5-23).
  • Page 30 SHENZHEN GETECH TECHNOLOGY CO., LTD (Picture 5-23) Choose “Move 1mm”, see picture (5-24). (Picture 5-24) Note: we suggest using 1mm to test X/Y/Z axis. After axis’ testing finished, if you want to unlock the motor, choose “Prepare>Disable steppers”, see picture (5-25). (Picture 5-25) When the motors are unlocked, you can move them by hand.

  • Page 31: Software Setting

    The details of USB printing are as follows: Firstly, turn on the printer, and connect the printer to computer with a USB cable. Normally, the computer will automatically search the install driver. The newest communication chip of A20M is CH340. See picture (6-1).
  • Page 32 SHENZHEN GETECH TECHNOLOGY CO., LTD (Picture 6-2) Download link for CH340: https://www.geeetech.com/index.php?main_page=download&download_id=40 After the driver is installed, check the “Device manager” and see if it is same as the picture below (6-3). If so, it means the driver is successfully installed.

  • Page 33: Install Slicing Software

    SHENZHEN GETECH TECHNOLOGY CO., LTD 6.2 Install slicing software Repetier-Host is the default slicing software here. Download address: https://www.repetier.com/download-software/  Set printer parameters When Repetier-Host is installed, turn on the printer and open the Repetier-Host. Repetier-Host supports several languages. You can choose your native language from Config>Language (Picture 6-4 for details).
  • Page 34 SHENZHEN GETECH TECHNOLOGY CO., LTD Using the Repetier-Host for the first time, printer parameters need to be configured before connecting. Click “Printer settings” on the top right corner, see picture (6-6). (Picture 6-6) It pops up the content as the picture below (6-7). Write down the relevant info accordingly. (Pay attention to the highlighted parts) a.
  • Page 35 SHENZHEN GETECH TECHNOLOGY CO., LTD b. Printer dialog (Picture 6-8): (Picture 6-8) c. Extruder dialog (Picture 6-9): (Picture 6-9)
  • Page 36 SHENZHEN GETECH TECHNOLOGY CO., LTD d. Printer shape dialog (Picture 6-10): (Picture 6-10) Now the printer parameters are set. Note: The baud rate is still 250000.  Set slicing parameters After setting the printer parameters, click “Connect” on the top left corner. The color of the icon changed to green means the printer connects to the Repetier-Host successfully.
  • Page 37 Printer parameters are important to print quality. Customers need to run tests to find the best parameters for their printers. Here we provide a configuration file for your reference (“Geeetech A20M PLA high.rcp”). You can import it according to the steps as follows. The following is an example of parameters for PLA (Picture 6-14):...
  • Page 38 SHENZHEN GETECH TECHNOLOGY CO., LTD Click “Print>Import” (Picture 6-14) It pops up the dialog as below (Picture 6-15). Choose “Geeetech A20M PLA high.rcp” and open it. (Picture 6-15) Now, the configuration file is imported, click “Save”. See picture (6-16).
  • Page 39 SHENZHEN GETECH TECHNOLOGY CO., LTD (Picture 6-16) Click “Filament>Import”, see picture (6-17). (Picture 6-17) It pops up dialog as below (Picture 6-18); choose “Geeetech A20M PLA high fi.rcf”.
  • Page 40 SHENZHEN GETECH TECHNOLOGY CO., LTD (Picture 6-18) Now, the configuration file is imported. Click “Save”. See picture (6-19). (Picture 6-19) Choose “Geeetech A20M PLA high” as print configuration and “Geeetech A20M PLA high fi” as printing material setting. Details see picture (6-20) below.

  • Page 41: Usb Printing

    SHENZHEN GETECH TECHNOLOGY CO., LTD (Picture 6-20) Now parameters setting are finished. 6.3 USB printing You can start USB printing when the parameters setting are finished. The model file format is .stl for 3D printer. You can download free models from websites such as thingiverse.
  • Page 42 SHENZHEN GETECH TECHNOLOGY CO., LTD (Picture 6-21) (Picture 6-22) When it is loaded, you can use the buttons as picture below (picture 6-23) to zoom in, zoom out or rotate the model.
  • Page 43 SHENZHEN GETECH TECHNOLOGY CO., LTD (Picture 6-23) Adjust the direction of the model so that the flat part of the model is touching the hot bed. See picture below (6-24): (Picture 6-24) Note: If the model loaded is too big and beyond the printing platform, you need to zoom out the model.
  • Page 44 SHENZHEN GETECH TECHNOLOGY CO., LTD Or zoom in/out them separately, see picture (6-26). (Picture 6-26) You need to combine the models for dual-color printing. Drag mouse to merge one model into another, see picture (6-27). (Picture 6-27) Below combined model for your reference, see picture (6-28).
  • Page 45 SHENZHEN GETECH TECHNOLOGY CO., LTD (Picture 6-28)  Model slicing When the size and direction of the model are set, choose the imported slicing parameters, and click “Slice with CuraEngine”. See picture (6-29, 6-30). (Picture 6-29) (Picture 6-30) You can find the model information such as estimated print time, the amount of filament needed, etc.

  • Page 46: Sd Card Printing

    SHENZHEN GETECH TECHNOLOGY CO., LTD (Picture 6-31) 6.4 SD card printing When all parameters are set, click “Save for SD print”. It will pop up a dialog as picture below (See picture 6-32) and then click the save button to generate a .gcode file. Copy the gcode file to the SD card.

  • Page 47: Color Mixer

    The Gcode file cannot be placed in any folder of the SD card, otherwise it cannot be read. 7 Color Mixer 7.1 Download Download address: http://www.geeetech.com/forum/viewtopic.php?f=92&t=61760 7.2 Introduction Free and easy-to-use, color mixer can mix your original single-color gcode file. You can create thousands program of mixing as you could.
  • Page 48 SHENZHEN GETECH TECHNOLOGY CO., LTD (Picture 7-1) (Picture 7-2)  After importing the .Gco file, you can set the start and end layer, and the percentage of...
  • Page 49 SHENZHEN GETECH TECHNOLOGY CO., LTD E0+E1 (start layer to end layer). You can adjust by dragging the slider or entering a value. See picture (7-3). (Picture 7-3)  You can click “Add” to set several start and end layer value, and the percentage of E0+E1 (start layer to end layer).
  • Page 50 SHENZHEN GETECH TECHNOLOGY CO., LTD (Picture 7-4)  When you finished configuration, you need to click "Mixer color" to mix your original gcode file. See picture (7-5).
  • Page 51 SHENZHEN GETECH TECHNOLOGY CO., LTD (Picture 7-5)  Click “Export G” to export the mixed gcode file, which is named with a suffix “_colored”. Copy the file to the SD card and start to print. See picture (7-6, and 7-7).
  • Page 52 SHENZHEN GETECH TECHNOLOGY CO., LTD (Picture 7-6) (Picture 7-7)

  • Page 53: Function Introduction

    8 Function introduction 8.1 Power loss-resuming capability A20M has the power loss-resuming capability. When power recovery starts, it will pop up a dialog to ask if continuing the unfinished print caused by power outage, choose “Resume print”. See picture (8-1).

  • Page 54: Filament Run-Out Sensor (Optional)

    SHENZHEN GETECH TECHNOLOGY CO., LTD 8.3 Filament run-out sensor (Optional) Before using this function, please check whether it is turned on or not. Choose “Control”>”Filament”>“Runout sensors” and make sure it shows “ON”. See pictures (8-3, 8-4). (Picture 8-3) (Picture 8-4) ...

  • Page 55: Touch For Auto Bed Leveling (Optional)

    SHENZHEN GETECH TECHNOLOGY CO., LTD (Picture 8-6) 8.4 3D touch for auto bed leveling (Optional) This printer supports auto bed leveling. Refer to the link below to know how to install the 3d touch sensor. https://www.youtube.com/watch?v=_RtsZDbR2po&t=66s Visit our official forum http://www.geeetech.com/forum/...

  • Page 56: Parameters

    SHENZHEN GETECH TECHNOLOGY CO., LTD 9 Parameters  Printing parameters Printing technology: FDM Printing volume: 255*255*255mm Printing accuracy: 0.1~0.2mm Positioning precision: X/Y: 0.011mm Z: 0.0025mm Printing speed: 60mm/s Nozzle quantity: 2-in-1-out single nozzle Nozzle diameter: 0.4mm Filament diameter: 1.75mm Filament: ABS/PLA/wood-polymer/PVA/HIPS/PETG, etc ...

  • Page 57: Contact

    SHENZHEN GETECH TECHNOLOGY CO., LTD 10 Contact Official site: https://www.geeetech.com/ Facebook Group： https://www.geeetech.com/contact_us.html Email us for technical support...

  • Page 58: Faq (Frequently Asked Questions)

    SHENZHEN GETECH TECHNOLOGY CO., LTD 11 FAQ (Frequently Asked Questions) 11.1 Abnormal extrusion  The filament is tangled  The nozzle temp is too low to reach the melting temperature required.  There is carbonized residue inside the nozzle. Please replace it with the spare nozzle ...

  • Page 59: Print Stopped

    Geeetech assumes no responsibility, nor will be liable, for any damages to, or any viruses or malware that may infect your computer, telecommunication equipment, or other property caused by or arising from your downloading of any information or materials related to Geeetech products.
  • Page 60 SHENZHEN GETECH TECHNOLOGY CO., LTD Shenzhen Getech Technology Co.,ltd www.geeetech.com...

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