AnyCubic i3 MEGA User manual

Safety Instructions
Please carefully read the safety instructions before get started.
ANYCUBIC 3D printer generates high temperature. Do not reach inside of the
printer during operation. Allow time for the printer to cool down after printing.
Contact with extruded materials may cause burns. Wait for printed objects to cool
before removing them from the build platform.
ANYCUBIC 3D printer includes moving parts that can cause injury.
Vapors or fumes may be irritating at operating temperature. Always use the
ANYCUBIC 3D printer in an open, well ventilated area.
Be cautious when using the scraper. Never direct the scraper towards your hand.
ANYCUBIC 3D printer MUST NOT be exposed to water or rain.
ANYCUBIC 3D printer is designed to be used within ambient temperature ranging
8ºC-40ºC, and humidity ranging 20%-50%. Working outside those limits may
result in low quality printing.
It is recommended to use protection glasses when cleaning/sanding the printed
models to avoid small particles contacting eyes.
In case of emergency, immediately turn off the ANYCUBIC 3D printer and contact
us or consult for professional advice.
Never leave the ANYCUBIC 3D printer unattended during operation.。

Technical Specification
Printing
Technology: FDM (Fused Deposition Modeling)
Build Size: 210×210×205 (mm3)
Layer Resolution: 0.05-0.3 mm
Positioning Accuracy: X/Y 0.0125mm，Z 0.002mm
Extruder Quantity: Single
Nozzle/Filament Diameter: 0.4 mm/1.75mm
Print Speed: 20~100mm/s (suggested 60mm/s)
Travel Speed: 100mm/s
Supported Materials: PLA, ABS, HIPS, Wood
Temperature
Ambient Operating Temperature: 8°C - 40°C
Operational Extruder Temperature: 260°C max
Operational Print Bed Temperature: 100°C max
Software
Slicer Software: Cura
Software Input Formats: .STL, .OBJ, .DAE, .AMF
Software Output Formats: GCode
Connectivity: SD card; USB port(expert users only)
Electrical
Input rating: 110V/220V AC, 50/60Hz
Working Voltage: 12V DC
Physical Dimensions
Printer Dimensions: 405mm×410mm×453mm
Net Weight: ~11kg

Contents
1. Product Overview...................................................................................................................................1
2. Part list .......................................................................................................................................................4
3. Assembly instruction ............................................................................................................................5
4. Leveling......................................................................................................................................................9
4.1 Assisted Leveling...........................................................................................................................9
4.2 Manual Leveling ..........................................................................................................................16
5. Software installation...........................................................................................................................19
5.1 Driver installation .......................................................................................................................19
5.2 Cura Installation ..........................................................................................................................21
6. Printing.....................................................................................................................................................29
7. Manual filament change....................................................................................................................32
8. Resume from outage ..........................................................................................................................33
9. Trouble shooting ..................................................................................................................................36

Thank you for choosing ANYCUBIC i3 MEGA 3D printer.
Please read the assembly instructions carefully.
Please visit www.anycubic3d.com for more support information.
Email us on suppor[email protected] or [email protected]
If you experience any issues with this product, or the performance is not what you
had expected, please contact us first before returning the item. We are here to solve
any problems for you.
Team ANYCUBIC

1
1. Product Overview
⑶
⑺
⑴
⑵
⑷
⑸
⑾
⑽
⑿
⑻
⑼
⑹
⒁
⒂
⒀
⒃
⒆
⒅
⒄
⑴Frame ⑵Base ⑶Print head ⑷Z probe ⑸Nozzle ⑹X smooth rods ⑺X end stop
⑻Print platform ⑼Y smooth rods ⑽Filament sensor ⑾Spool holder ⑿Filament spool
⒀Extruder ⒁Z smooth rods ⒂Z lead screw ⒃X motor ⒄Z end stop ⒅Z motors ⒆Y
end stop ⒇Model cooling fan (21) Hotend cooling fan (22) Teflon tubing
⒇
(21)
(22)

2
Home menu
Print: enter the print menu
Setup: enter the setup menu
Tools: enter the tools menu
(Other information: ①nozzle temperature ②heated bed temperature ③printer status)
Print
Print: print the selected files in SD card
Resume: Resume from outage (only valid for offline print)
(Other information: ①Page up and down ②Refresh ③Return to the home menu)
Setup
En/中: Language selection between English and Chinese
Temp: Enter the menu to adjust ①E0 (hotend) Temp (170-260°C) ②Bed Temp (0-120°C)
Menu Directory
Home Menu
Print
Tools
Setup

3
Motor: Disable all motors (only valid when no print job)
Status: Enter the sub-menu with Print/Pause/Resume icon (only valid for offline print)
(Other information: ①Files ②Print Rate ③Time ④Progress ⑤E0 Temp ⑥Bed Temp ⑦
coordinates for X/Y/Z axis ⑧Return to previous menu)
Speed: Enter the menu to adjust ①Fan speed (0-100) ②Print Rate (50-999)
Return: Return to Home Menu
Tools
Home: ①Home X ②Home Y ③Home Z ④Home All ⑤Return (only valid when no print job)
Axis: ①Home all axis ②Move X/Y/Z axis by 0.1/1/10 ③Choose the travel speed
Low/Medium/High (only valid when no print job)
Preheat: ①Preheat PLA ②Preheat ABS (only valid when no print job)
(Other information: ①E0 Temp ②Bed Temp)
Cooling: Cut off the power of hotend and heated bed (only valid when no print job)
Filament: ①Filament In ②Filament Remove ③Stop (will automatically heating to 200°C for
filament in or remove) (only valid when on print job)
Reset: Popup window to decide if reboot the mainboard
More: Enter the next page of Tools sub-menu
TP: Touch panel alignment（click on the cue points）
Help: Basic description of the Menu
Info: Information about the product
Return: Return to Home Menu

4
2. Part list
Tool pack
Screws（M5*8）
SD card
SD Card reader
ANYCUBIC i3 MEGA
Gloves
Power cord
Tweezer
Spool holder
Test filament (Random)
USB cable
Backup hotend
Scraper
Plier

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3. Assembly instruction
1. Unpack and take out the printer and accessories.
The smooth rods and lead screw may be greased in factory, so please wear gloves.
2. Find 8 pieces of M5*8mm hex cap screws and the corresponding screw driver.
Follow ①②③in Fig. 1. Carefully lift the base to fit into the frame and then fix them by
the M5*8mm hex cap screws. The screw locations are pointed with red squares in ③.
The screws can be installed in a diagonal order and can be tightened after all screws
inserted in place.
Figure 1
②
③

6
3. Wiring
(1) Fig.2, customers are required to select the correct voltage mode according to their local
voltage ratings (110V/220V). Please notice that the switch is inside the bottom left of the
base and 220V is default. A hex screw driver can be used to move the switch inside.
(2) There are 3 ports at the bottom right of the base, and accordingly there are 3 cable
connectors. Firstly, in Fig. 3, insert the cable connector labeled “Extruder&filament
monitor”(6 pins) to the lower port.
Pay close attention to the up and down side of the connector, and make sure the
connector is well inserted in place, and no pins bent. WRONG or loose connection would
lead to malfunction of the machine, the same for the rest of other two connectors.
Choose the voltage ratings
(Figure 3)
(Figure 2)
Lower port
Gap
Convex line

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(3) Fig.4,insert “Hotend”connector to the middle port (14 pins).
(4) Fig.5, insert “X/Z motors&endstops”connector to the upper port (16 pins).
(Figure 4) (Figure 5)
(5) Fig. 6, customers may notice there is a piece of zip tie attached just below the plastic ring
of the quick connector. Do not cut it off. Only cut this zip tie when swapping or repairing
a malfunction hotend, because it needs to push down the plastic ring and pull out the
Teflon tubing.
4. Spool holder and filament sensor
(1) As shown in Fig. 7, assemble the spool holder and tighten 4 pairs of screw and nuts at
the lower corner. (The color and shape of the spool holder might be slightly different from this
pircture)
Convex line
Middle port
Gap
Upper port
Gap
Convex line
(Figure 6)
Plastic ring
Zip tie
Do not cut

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(2) Install the filament spool to the spool holder. As shown in Fig.8, pass the filament
through the filament sensor. Then, as shown in Fig. 9, insert the filament into the
extruder and then into the Teflon tubing (but not fully into the hotend yet).
When insert the filament to the sensor and extruder, it is suggested to cut off the bent
tip of the filament, and rotate the angle if feels any resistance at the sensor or extruder.
The filament sensor can be hooked on the lower beam of the spool holder.
It is important to make sure there is no tied or tangle on the spool.
Filament
Hook sensor to the horizontal beam
(Figure 8)
(Figure 7)
Extruder
Close-up inside the sensor

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4. Leveling
It is essential to have the platform leveled for 3D printing. ANYCUBIC i3 MEGA offers two
methods for platform leveling: assisted leveling and manual leveling. For experienced
users, it is recommended to just level the platform manually. For new customers, you may
use the assisted leveling.
ANYCUBIC i3 MEGA equipped with proximity switch (sensor) for the assisted leveling
function. Please note that this sensor is only function with metal platform (such as
aluminum) and the results might be inconsistent when the platform is hot.
4.1 Assisted Leveling
1. Ensure the wiring is OK. Then connect the power cord to the machine and the power
outlet respectively. Switch on the machine.
(Figure 9) Load the filament manually
Press
Press

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Before proceed, make sure the X axis is leveled (Fig. 10), in case X axis lost its balance
during shipping or due to other unexpected causes. A rule or maybe caliper or anything
with certain length can be used for this measure. The Z lead screw can be turned
manually for adjust the levelness of the X axis (wear gloves).
(Figure 10)
2. Fig. 11, on the Home Menu, Click “Tools”-->“Home”-->“Home All”.
After “Home All”, it is suggested to visually check again if the X axis is leveled or not. If
adjustment needed, you may have to click “Setup”-->“Motor”to disable the motor
so the Z lead screws could be turned manually for height adjusting. After adjustment,
click “Home All”again for the next steps.
Height A
Height B
A=B

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(Figure 11)
3. Tighten the 4 screws/nuts underneath the print platform till stop (Fig. 12), to create a
distance between the platform and print head.
Click “Tools”-->“Level”, the machine will auto home first and then the X/Y/Z axis will
be locked and cannot be moved manually. Next, click “Start”in the pup-up window.
(Figure 12)
4. The print head will be traveling to the 4 corners of the print platform anti-clockwisely.
When it arrives at the first point, please slowly loosen the corresponding nut (Fig. 13), so
the platform will be gradually bouncing back toward the print head and proximity sensor

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and finally triggers the sensor and there will be audio feedback from the beeper. When
you hear the beep, please stop adjusting the nut and click “Next”for the following
point (Fig. 13). Do the same to the rest points.
(Figure 13)
5. The principle of “Assisted leveling”is to manually adjust the height between proximity
sensor (nozzle) and platform until the beep.
The procedures are: tighten the 4 nuts under print platform-->click “Level”-->loosen
the nut at point No. 1-->hear the beep-->next point…-->done.
During leveling, it is suggested to click “Last”to check the previous points to verify the
results because it may need fine tune few times to achieve the best result (Fig. 14).
(Figure 14)
6. Upon finished, the checking interface will appear (Fig. 15).

13
If clicking “Check (No-heating)”, the print head will immediately run a rectangular on
the print platform, you may observe the distance between the nozzle and platform.
Ideally, the distance should be of 0.1~0.2 mm (approx. a paper thin)
If clicking “Check (Heating)”(Fig. 15), the machine will automatically heating the
nozzle to 200°C and run a rectangular again with extrusion.
Note: because the filament has not been inserted to the hotend yet, so, here it is required to
manually feed the filament through the Teflon tubing into the hotend as the temperature rising.
Push down the handle at the extruder (refer to Fig. 9) and manually insert the filament all the
way into the hotend and the filament should flow through when temperature reaching to over
~180-190°C, otherwise the filament has not been inserted properly. You may use the tweezer to
carefully get rid of the extruded filament at the nozzle.
(Figure 15)
Tips: a during “Check (Heating)”, the touch screen will turn grey and
non-responsive.
b when nozzle is too close to the print platform (i.e. leveling is not appropriate),
the extrusion gear might be slipped and it will back to normal after manually
increase the distance (refer to next step 7).
7. The results of “Check (Heating)”are described as in Fig. 16.

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(Figure 16)
As shown in Fig. 16B, you may need to manually fine tune after assisted leveling to
achieve satisfying results. After fine tune, please scrape off the previous one, and run
another “Check (Heating)”to verify. Never direct the scrapper toward your hands.
For first time users, it may take few times to get satisfying results as shown in Fig. 16A.
However, it is still OK to go for the next step even if the result is like Fig. 16B shows.
There will be more explanation on how to fine tune the leveling (refer to next step 8).
8. Insert the SD card (back side facing up) into the slot at the bottom right side of the base.
Click on the Home “Print”into the print files interface. Click on the exist file
“owl_pair”(author: etotheipi, www.thingiverse.com), and click “Print”(Fig. 17). The
machine will automatically heating and print the file (heating bed first then the nozzle).
Again, if the filament has not been inserted to the hotend yet, please do so manually.
Use the tweezer to carefully remove the extruded filament before printing.
Leveling is good and the
filament evenly extruded to the
platform.
Too close to the nozzle, you may
manually tighten the two nuts at
the left side by ~half-circle.
(one circle~0.5mm)
A
B