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Geeetech A20T User Manual Download Page 28

 

28 

 

SHENZHEN GETECH TECHNOLOGY CO., LTD 

 

(Picture 7-25) 

When the motors are unlocked, you can move them by hand. 

8 Software setting 

8.1 Install driver 

Two printing choices for A20T: TF card printing and USB printing. 

TF card printing: 

After leveling, insert the TF card into the slot, and choose a .gcode file to start

 

printing. 

USB  printing: 

Connect  the  printer  and  computer  with  a  USB  cable  to  control  the  printer

 

with 

slicing  software  such  as  Repetier-Host.  Because  of  some  unstable  factors  such  as  signal 
interference, the USB printing prone to fail. So we suggest choosing TF card printing. 
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). 

 

(Picture 8-1) 

If it fails to automatically install the driver in computer, then check whether the driver is installed 

Summary of Contents for A20T

Page 1: ...1 SHENZHEN GETECH TECHNOLOGY CO LTD Geeetech A20T 3D Printer User Manual V1 00 ...

Page 2: ...ee diagram 20 7 2 Main functions 21 8 Software setting 28 8 1 Install driver 28 8 2 Install slicing software 30 8 3 USB printing 39 8 4 TF card printing 43 9 Color Mixer 44 9 1 Download 44 9 2 Introduction 44 10 Function introduction 49 10 1 Power loss resuming capability 49 10 2 Reset button 49 10 3 Filament run out sensor Optional 50 10 4 3D touch for auto bed leveling Optional 50 11 FAQ Frequen...

Page 3: ...ank 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: ...livery As a result there may be residue in the extruder head or on the hot bed but it should not affect normal use We provide the spare nozzle in the accessory kit just in case 1 3 Risk statement 1 Before color is mixing or monochrome printing make sure that there is the filament in the feeding tube on both sides of the extruder head to prevent back flushing of the molten filament inside the extru...

Page 5: ...e nozzle Nozzle diameter 0 4mm Filament Diameter 1 75mm ABS PLA etc Environment temperature 10 40 Operating system Windows Mac Linux Slicing software Repetier Host EasyPrint 3D Cura File format STL Gcode Electrical parameters Power input 100 120V 200 240V Power output DC24V 14 6A 350W Connectivity TF card USB LCD screen LCD 12864 screen Mechanical parameters Printer size 442x447x480 mm3 Package si...

Page 6: ...wn below If any spare parts are missing please contact your sales representative Gantry kit Bottom kit Extruder motors 3 sets Filament detector kit 3 sets Nozzles 2 Filament holder kit 3 sets Power cord Filaments 3 random colors Teflon tube Zip ties TF Card Tool kit Mouse pad USB cable Machine installing screws User guide ...

Page 7: ...n 3 Knob 4 Reset button 5 Y axis 6 Bottom kit 7 Z axis end stop 8 X axis end stop 9 Extruder motors 3 sets 10 Teflon tube 11 Extruder head 12 Hot bed 13 X axis motor 14 Z axis motor 15 Y axis motor 16 Power voltage selector switch 17 Y axis end stop 18 Extruder wire interface 19 Power switch 20 Power socket 21 USB port 22 TF card slot ...

Page 8: ...and screws See picture 5 1 Picture 5 1 Assemble the gantry frame and base from bottom to top with 4 M5x35 screws and 4 M5 spring washers See picture 5 2 Picture 5 2 Assemble and fix the three sets of extruder units to the back side of the top gantry as shown Gantry kit Bottom kit Extruder motors 3 sets Filament detector kit 3 sets Machine installing screws Tool kit ...

Page 9: ...e 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 Insert the three Teflon tubes into the quick insert connector of the three extruders respectively It can be inserted into the quick insert connectors of E0 E1 and E2 as needed Details see picture 5 5 ...

Page 10: ...5 6 Connect the motor wires of E0 E1and E2 See picture 5 7 Picture 5 7 Then the extruder wire and the motor extruder wire are fixed into the small hole on the backside of the screw with the Cable tie to avoid the wire harness touching the model during printing In addition the position the harness fixed needs to reserve the length of the Z axis at the maximum height See picture 5 8 ...

Page 11: ...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: ... The factory default voltage is 230V You need to choose the correct voltage according to your local standard requirement See picture 5 12 Note Be sure the voltage is switched to the correct one Picture 5 12 5 4 Check the filament Put the filament on the spool holder Please pay attention to the feeding direction of the filament See picture 5 13 ...

Page 13: ...ment 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 See picture 5 14 Picture 5 14 When print PLA set the target nozzle temperature about 190 210 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 ...

Page 14: ...NZHEN 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: ... the option Level corners on the LCD screen Put a piece of A4 paper on the platform click Next corner the extruder head moves counterclockwise from the bottom left corner to the four corners of the platform See picture 6 1 and 6 2 Picture 6 1 Picture 6 2 When the extruder head moves to the left bottom adjust the corresponding knob until the distance between the nozzle and bed is about the thicknes...

Page 16: ...w the distance between the nozzle and the bed is too close which prevents the filament from coming out and causes the extruder gear to click and even worse scratch the nozzle on the bed See picture 6 5 Picture 6 5 c Moderate Extrude the filament properly and evenly stick on the bed See picture 6 6 Picture 6 6 In the case of too low and too high adjust the knobs under the platform till they are mod...

Page 17: ...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 Picture 6 8 Press and rotate the knob to enter the main menu Select the option of Print from SD See picture 6 9 Picture 6 9 ...

Page 18: ...hoose 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 Picture 6 12 ...

Page 19: ...19 SHENZHEN GETECH TECHNOLOGY CO LTD Picture 6 13 ...

Page 20: ...20 SHENZHEN GETECH TECHNOLOGY CO LTD 7 Introduction to the LCD menu 7 1 Tree diagram Picture 7 1 ...

Page 21: ... Current printing info 7 Feed rate Current printing speed 8 Mix color printing ratio E0 E1 E2 Picture 7 2 Note Rotating the knob can change the printing feed rate during printing We suggest users not changing the feed rate too much or it will make the motors to skip caused by too fast speed and affect the print quality Press the knob to enter the next menu Picture 7 3 7 4 Prepare Prepare and test ...

Page 22: ...BS Picture 7 5 Picture 7 6 The main functions of Control menu Picture 7 7 7 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 Motion Motion parameter setting in firmware After modification choose store memory to save the change Filament Open or close filament detector set filament diameter Store settings Save th...

Page 23: ...wn 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 printing mode that varies with height The detailed operation steps for your reference Set fixed mix ratio Choose Mixer and press the knob Rotate the knob to choose Mix 100 0 0 Adjust the mix ratio and press the knob to confirm See picture 7 11 7 12 and 7 13 Pictu...

Page 24: ... 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 Picture 7 15 Choose Gradient to set the variable mix ratio details see picture 7 16 ...

Page 25: ... 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 and end z press and rotate the knob to set the starting and ending position of mixing Then select the model to print the machine will automatically print according to the ratio of the mixture just set the above is the main function of th...

Page 26: ...cture 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: ...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 testing finished if you want to unlock the motor choose Prepare Disable steppers see picture 7 25 ...

Page 28: ...cable to control the printer with slicing software such as Repetier Host Because of some unstable factors such as signal interference the USB printing prone to fail So we suggest choosing TF card printing 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 ...

Page 29: ...mation 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: ...cing 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 Picture 8 4 ...

Page 31: ...ost 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 Pay attention to the highlighted parts a Connection dialog see picture 8 7 ...

Page 32: ...HNOLOGY 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: ...33 SHENZHEN GETECH TECHNOLOGY CO LTD c Extruder dialog Picture 8 9 Picture 8 9 d Printer shape dialog Picture 8 10 ...

Page 34: ... 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 Click it again to disconnect See picture 8 11 Picture 8 11 After successfully connected choose Slicer CuraEngine and open the configuration menu See picture 8 12 Picture 8 12 ...

Page 35: ...rs for their printers 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 Picture 8 14 It pops up the dialog as below Picture 8 15 Choose Geeetech A20T PLA high rcp and open it ...

Page 36: ...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: ...ECHNOLOGY 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: ... printer You can download free models from websites such as thingiverse com You can also design your own models Load the printing model Open the Repetier Host and click load Choose a file and open it See picture 8 21 8 22 Picture 8 21 Picture 8 22 When it is loaded you can use the buttons as picture below picture 8 23 to zoom in zoom out or rotate the model ...

Page 40: ...del 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 Click to zoom the object You can perform a uniform scaling as shown in Picture 8 25 ...

Page 41: ...om 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: ...d 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 You can use tweezers to clean up the residual material of the nozzle ...

Page 43: ...g 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 Picture 8 30 Insert the TF card into the TF card slot on the right side of the machine Press the knob to enter the main menu and choose Print from SD See picture 8 31 Choose the corresponding gcode file to start printing ...

Page 44: ... 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 Click Import G to import Gco file Choose 3 as the Extruder Number See ...

Page 45: ...layer and the discharge change percentage of extruders according to actual needs You can adjust by dragging the slider or entering a value See picture 9 3 In addition you can click Add to add multiple configuration boxes to adjust the extruder discharge change ratio at different starting and ending heights As shown in picture 9 4 ...

Page 46: ...dow in the upper right corner to enter the color selection interface as shown in Picture 9 6 The color here should be selected according to the actual filament color of each extruder and then click Select to confirm After selecting corresponding color to each extruder click the Preview button below to display color change of the current configuration in the box on the right side of the small windo...

Page 47: ...nge 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 Copy the file to the TF card and insert it into the machine to start printing See picture 9 8 and 9 9 The processed model is shown in picture 9 10 ...

Page 48: ...48 SHENZHEN GETECH TECHNOLOGY CO LTD Picture 9 7 Picture 9 8 Picture 9 9 Picture 9 10 ...

Page 49: ...and Y axes will auto home The extruder will extrude the residue in the nozzle Use a tweezers to clean the nozzle before starting printing again Note When power outage move the nozzle away from the printing model in case the filament oozes out on to the print Be sure to clean the residue in the nozzle before restarting the print or it would affect the quality of the print 10 2 Reset button The rese...

Page 50: ...nter will stop See picture 10 5 Press the extruder handle remove the remaining filament before loading the new filament When the filament is loaded use a tweezers to clean the nozzle Press the knob to enter the main menu and choose 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 Re...

Page 51: ... clogged please refer to 11 1 abnormal extrusion Check whether the friction force between the extruder gear and the filament is enough Please clean the residue Check whether the voltage of the driver of the extruder is normal and try to increase it by 0 1v until it works normally max 1 2v 11 3 First layer abnormal Non stick a the nozzle is too far from the hot bed Please re level the bed try to st...

Page 52: ... TF card TF card printing the gcode file in the TF card is abnormal please slice again The quality of the TF card is poor Please try another TF 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: ...ied warranties of any kind including warranties of merchant ability fitness for a particular purpose or non infringement of intellectual property To the fullest extent permissible by the applicable law we hereby disclaim all liability for product defect or failure or for claims that are due to normal wear product misuse or abuse product modification improper product selection noncompliance with an...

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

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