Geeetech A20T User Manual
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Geeetech A20T User Manual

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SHENZHEN GETECH TECHNOLOGY CO., LTD
Geeetech A20T 3D Printer
User Manual
(V1.00)
1

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Summary of Contents for Geeetech A20T

  • Page 1 SHENZHEN GETECH TECHNOLOGY CO., LTD Geeetech A20T 3D Printer User Manual (V1.00)

  • Page 2: Table Of Contents

    SHENZHEN GETECH TECHNOLOGY CO., LTD Content 1 Attention ..........................4 1.1 Safety instructions ....................... 4 1.2 Factory test before delivery ..................4 1.3 Risk statement………..………………………………………………………………………………………………4 2 Machine parameters………………....................5 3 Packing list……………………………………………………………………………………………………….…….……….…6 4 Machine Overview ……………………………………………………………………………….…………………………..7 5 Assembling ..........................8 5.1 Assembling the main frame ..................8 5.2 Wire connection ......................
  • Page 3 SHENZHEN GETECH TECHNOLOGY CO., LTD Thank you for choosing Geeetech products! [Important] Please read the instruction manual carefully before using this machine. Official site: https://www.geeetech.com/ Email us for technical support: https://www.geeetech.com/contact_us.htm Facebook Group:...

  • Page 4: 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 5: Machine Parameters

    SHENZHEN GETECH TECHNOLOGY CO., LTD 2 Parameters  Printing parameters Printing technology: FDM Printing volume: 250*250*250mm Printing accuracy: 0.1~0.2mm Positioning precision: X/Y: 0.011mm Z: 0.0025mm Printing speed: 60mm/s Nozzle quantity: 3-in-1-out single nozzle Nozzle diameter: 0.4mm Filament: Diameter 1.75mm; ABS/ PLA, etc Environment temperature: 10℃-40℃...

  • Page 6: Packing List

    SHENZHEN GETECH TECHNOLOGY CO., LTD 3 Packing list Please check the parts/accessories when you receive the printer (As shown below). If any spare parts are missing, please contact your sales representative. Gantry kit Bottom kit Extruder motors (3 sets) Filament detector kit (3 Filament holder kit（3 Nozzles *2 sets)

  • Page 7: Machine Overview

    SHENZHEN GETECH TECHNOLOGY CO., LTD 4 Machine Overview (Picture 4-1) (Picture 4-2) (Picture 4-3) (Picture 4-4) ○ Gantry frame ○ LCD12864 screen ○ Knob ○ Reset button ○ Y axis ○ Bottom kit ○ Z axis end stop ○ X axis end stop ○ Extruder motors (3 sets) ○...

  • Page 8: Assembling

    SHENZHEN GETECH TECHNOLOGY CO., LTD 5 Assembling 5.1 Assembling the main frame The main frame consists of the gantry kit and the bottom kit, extruders, filament holder, and screws. See picture (5-1). Gantry kit Bottom kit Extruder motors (3 sets) Filament detector kit (3 Machine installing screws Tool kit...

  • Page 9: Wire Connection

    SHENZHEN GETECH TECHNOLOGY CO., LTD in picture (5-3). (Picture 5-3)  Filament holder kit was assembled as shown in Picture (5-4) with 4 M3x16 screws, 4 M3 nuts and 4 M3 washers, a total of 3 sets were assembled. (Picture 5-4) 5.2 Wire connection ...
  • Page 10 SHENZHEN GETECH TECHNOLOGY CO., LTD (Picture 5-5)  Plug the extruder cables into the socket of the extruder head adapter plate, and the buckle must be fastened. See picture (5-6). (Picture 5-6)  Connect the motor wires of E0、E1and E2. See picture (5-7). (Picture 5-7) ...
  • Page 11 SHENZHEN GETECH TECHNOLOGY CO., LTD (Picture 5-8)  Connect the wires of X axis’ motor and end stop. See picture (5-9). (Picture 5-9)  Connect the wires of Y axis’ motor and end stop. See picture (5-10). (Picture 5-10)

  • Page 12: Check The Power Input Mode

    SHENZHEN GETECH TECHNOLOGY CO., LTD  Connect the wires of Z axis’ motor and end stop. See picture (5-11). (Picture 5-11) 5.3 Check the power input mode The factory default voltage is 230V. You need to choose the correct voltage according to your local standard requirement.
  • Page 13 SHENZHEN GETECH TECHNOLOGY CO., LTD (Picture 5-13) 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. Press down the lever handle of the extruder and insert the filament into the feeding tube until it reaches the extruder head.
  • Page 14 SHENZHEN GETECH TECHNOLOGY CO., LTD 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. See picture (5-15). (Picture 5-15)

  • Page 15: First Print

    SHENZHEN GETECH TECHNOLOGY CO., LTD 6 First print 6.1 Level the print bed The first layer is basis 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 16 SHENZHEN GETECH TECHNOLOGY CO., LTD (Picture 6-3)  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 17: Tf 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 6.2 TF card printing Insert the TF card into the slot. See picture (6-8).
  • Page 18 SHENZHEN GETECH TECHNOLOGY CO., LTD Choose the files in the TF card. See picture (6-10). (Picture 6-10) The printer will heat automatically. See picture (6-11). (Picture 6-11) When heating done, the printer will start printing until the print is complete. See picture (6-12, 6-13).
  • Page 19 SHENZHEN GETECH TECHNOLOGY CO., LTD (Picture 6-13)

  • Page 20: Introduction To The Lcd Menu

    SHENZHEN GETECH TECHNOLOGY CO., LTD 7 Introduction to the LCD menu 7.1 Tree diagram (Picture 7-1)

  • Page 21: Main Functions

    SHENZHEN GETECH TECHNOLOGY CO., LTD 7.2 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 (7-2): Extruder temperature: Current temp/target temp Hot bed temperature: Current temp/target temp Extruder head blower status Current Z axis value...
  • Page 22 SHENZHEN GETECH TECHNOLOGY CO., LTD (Picture 7-3) (Picture 7-4) The main functions of Prepare menu (Picture 7-5, 7-6):  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 23 SHENZHEN GETECH TECHNOLOGY CO., LTD (Picture7-7) (Picture 7-8) The main functions of Mixer menu: ∧ Mx: Fixed mix ratio print mode, as shown in Picture (7-9). Mx : The blend ratio printing mode changes with height, as shown in Picture (7-10). (Picture 7-9) (Picture 7-10) Mixer menu offers two mix-printing options, namely fixed mix ratio printing and and Mix ratio...
  • Page 24 SHENZHEN GETECH TECHNOLOGY CO., LTD (Picture 7-12) (Picture 7-13) “Toggle mix”: If you need to quickly switch the ratio between E0; E1and E2, you can select this function to switch, see picture (7-14) (Picture 7-14) Set the mix ratio print mode that varies with height First, you need to get the current z-axis coordinate, which can be found on the screen, details see picture (7-15).
  • Page 25 SHENZHEN GETECH TECHNOLOGY CO., LTD (Picture 7-16) “Gradient mix”: Adjust the filament ratio of E0 、E1and E2. See picture (7-17and 7-18). (Picture 7-17) (Picture 7-18) “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).
  • Page 26 SHENZHEN GETECH TECHNOLOGY CO., LTD (Picture 7-19) Test the motors’ function via LCD Press the knob to enter the next menu; choose “Prepare”. See picture (7-20). (Picture 7-20) Choose “Auto home” to home the printer, see picture (7-21). (Picture7-21) Choose “Move axis” to move motors. See picture (7-22)
  • Page 27 SHENZHEN GETECH TECHNOLOGY CO., LTD (Picture 7-22) Choose from “Move X/Y/Z/Extruder” and rotate the knob to move them. See picture (7-23). (Picture 7-23) Choose “Move 1mm”, see picture (7-24). (Picture 7-24) Note: we suggest using 1mm to test X/Y/Z axis. After axis’...

  • Page 28: 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 A20T is CH340. See picture (8-1).
  • Page 29 If it shows the exclamation mark as picture below (8-2), then you need manually install the driver. (Picture 8-2) 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 (8-3). If so, it means the driver is successfully installed.

  • Page 30: Install Slicing Software

    SHENZHEN GETECH TECHNOLOGY CO., LTD (Picture 8-3) 8.2 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 8-4 for details).
  • Page 31 SHENZHEN GETECH TECHNOLOGY CO., LTD English interface for your reference (picture 8-5). (Picture 8-5) 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 (8-6). (Picture 8-6) The following window pops up, and you can fill in according to the contents of the label.
  • Page 32 SHENZHEN GETECH TECHNOLOGY CO., LTD (Picture 8-7) b. Printer dialog (Picture 8-8): Do not check "Return to the parking position after the end of the task interruption" to prevent the machine from damaging the model after the end of printing. (Picture 8-8)
  • Page 33 SHENZHEN GETECH TECHNOLOGY CO., LTD c. Extruder dialog (Picture 8-9): (Picture 8-9) d. Printer shape dialog (Picture 8-10):...
  • Page 34 SHENZHEN GETECH TECHNOLOGY CO., LTD (Picture 8-10) Now the printer parameters are set. Note: If the operating system is Mac OS, Repetier Host baud rate is also set to 250,000.  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 35 Here we provide a configuration file for your reference (“Geeetech A20T PLA high.rcp”). You can import it according to the steps as follows, this file can be downloaded from the official website. The following is an example of parameters for PLA (Picture 8-14): Click “Print>Import”...
  • Page 36 SHENZHEN GETECH TECHNOLOGY CO., LTD (Picture 8-15) Now, the configuration file is imported, click “Save”. See picture (8-16). (Picture 8-16) Click “Filament>Import”, see picture (8-17).
  • Page 37 SHENZHEN GETECH TECHNOLOGY CO., LTD (Picture 8-17) It pops up dialog as below (Picture 8-18); choose “Geeetech A20T PLA high fi.rcf”. (Picture 8-18) Now, the configuration file is imported. Click “Save”. See picture (8-19).
  • Page 38 SHENZHEN GETECH TECHNOLOGY CO., LTD (Picture 8-19) Choose “Geeetech A20T PLA high” as print configuration and “Geeetech A20T PLA high fi” as printing material setting. Details see picture (8-20) below. (Picture 8-20) Now parameters setting are finished.

  • Page 39: Usb Printing

    SHENZHEN GETECH TECHNOLOGY CO., LTD 8.3 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. can also design your own models. ...
  • Page 40 SHENZHEN GETECH TECHNOLOGY CO., LTD (Picture 8-23) Adjust the direction of the model so that the flat part of the model is touching the hot bed. See picture below (8-24): (Picture 8-24) Note: If the model loaded is too big and beyond the printing platform, you need to zoom out the model.
  • Page 41 SHENZHEN GETECH TECHNOLOGY CO., LTD (Picture 8-25) Or zoom in/out them separately, see picture (8-26). (Picture 8-26)  Model slicing After setting the model size and direction, select the previously imported slice parameter settings in the slice software window, and then click “Slice with CuraEngine”. See picture (8-27), (8-28).
  • Page 42 SHENZHEN GETECH TECHNOLOGY CO., LTD (Picture 8-27) (Picture 8-28) You can find the model information such as estimated print time, the amount of filament needed, etc. Click “Print” to start USB printing. Refer to picture (8-29). The printer will heat to the target temp and then start printing. Under high temperature, the filament will flow out of the nozzle, which is normal.

  • Page 43: Tf Card Printing

    SHENZHEN GETECH TECHNOLOGY CO., LTD (Picture 8-29) 8.4 TF card printing When all parameters are set, click “Save for SD print”. It will pop up a dialog as picture below (See picture 8-30) and then click the save button to generate a .gcode file. Copy the gcode file to the TF card.

  • Page 44: Color Mixer

    The Gcode file cannot be placed in any folder of the TF card, otherwise it cannot be read. 9 Color Mixer 9.1 Download Download address: http://www.geeetech.com/forum/viewtopic.php?f=92&t=61760 9.2 Introduction Color Mixer enables multicolor models to be printed by adjusting the extruder discharge ratio to the original single-color model. The specific steps are as follows: ...
  • Page 45 SHENZHEN GETECH TECHNOLOGY CO., LTD (Picture 9-1) (Picture 9-2)  After importing the .Gco file, you can set the height of start and end layer, and the discharge change percentage of extruders according to actual needs. You can adjust by dragging the slider or entering a value.
  • Page 46 SHENZHEN GETECH TECHNOLOGY CO., LTD (Picture 9-3) (Picture 9-4)  See picture (9-5), Adjust discharge change ratio of each extruder in a range of heights as needed, click the E0, E1, E2 button in the “Preview” window in the upper right corner to enter the color selection interface, as shown in Picture (9-6).
  • Page 47 SHENZHEN GETECH TECHNOLOGY CO., LTD (Picture 9-5) (Picture 9-6)  After configuring the parameters, click the “Mix Color” button to change the original single-color model to a custom multicolor model. As shown in Picture (9-7).  Click “Export G” to export and save the mixed color model, which is named with a suffix “_colored”.
  • Page 48 SHENZHEN GETECH TECHNOLOGY CO., LTD (Picture 9-7) (Picture 9-8) (Picture 9-9) (Picture 9-10)

  • Page 49: Function Introduction

    10 Function introduction 10.1 Power loss-resuming capability A20T 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 (10-1).

  • Page 50: Filament Run-Out Sensor (Optional)

    “Resume print” to re-start the printing. See picture (10-6). (Picture 10-5) (Picture 10-6) 10.4 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 51: 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 52: Print Stopped

     The quality of the card is poor. Please try another card.  The power supply voltage in the area is not stable; please print after the voltage is stable. Visit our official forum for more information: http://www.geeetech.com/forum/viewtopic.php?f=98&t=61864...

  • Page 53: Declaration

    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 54 SHENZHEN GETECH TECHNOLOGY CO., LTD Shenzhen Getech Technology Co.,ltd www.geeetech.com...

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