Ender-3 3D Printer Instructions for assembly ◆ This guide is for the Ender-3 3D printer. ◆ Select the correct input voltage to match your local mains (220V or 110V). ◆ Because of software/hardware upgrades and model differences, new revisions may not be listed in this guide. ◆ Detailed instructions for use are available on the SD card.
Step1. BOM a. Remove the parts from the box and remove any tape and padding from the parts. Inspect the parts to make sure they were not damaged in shipment. b. Check the items on List 1 and List 2. The wiring harness of component (Ba) and component (N) has already been connected.
Step 2. Install aluminum extrusions (L) and (R) to base (Ba) Prepare the following parts: a. M5x45 socket head hex screws (4x) b. M5 washer (4x) c. Aluminum profiles (L) (1x) d. Aluminum profiles(R) (1x) e. Base (Ba) (1x) f. 4mm Allen key Step 1. Place (L) on the left and keep the direction of the base (Ba) facing front； Step 2. Place the aluminum profile (L) vertically over the left side frame of the base (Ba), be careful that the (L) profile has the threaded holes with the short sides facing downwards.
Step 3. Power supply and operation screen installation Prepare the following parts: a. M5x8 hex drive rounded head screws (2x) b. Operation screen assembly(S) (1x) c. M4x20 socket head hex screws (2x) d. Switching power supply assembly（P）(1x) e. 3mm Allen key f. *Select the correct input voltage to match your local mains (220V or 110V). Step 1. Keep the the base (Ba) facing towards you. Step 2.
Step 4. Z axis limit switch installation 1. Prepare limit switch assembly (ZI) and 3mm Allen key； 2. The direction of the base (Ba) stays at the front, and the switch assembly (ZI) is mounted on the left side of the base (Ba) (as shown in the diagram on the)； 3. Loosen the T-nut by hand until it is at the end of the threads, but not so far it might fall off. Then, fit into the slot in the aluminum profile. When the bolt is tightened, the nut rotates 90 degrees and then grasps the inside of the slot. 4.
Step 5. Z axis motor assembly installation Prepare the following parts: a. T8 Acme lead screw (1x) b. M4x18 hex drive flat head screws (2x) c. Z-axis motor assembly (Zm) (1x) d. 2.5mm Allen key Step 1. Rotate base (Ba) 180°until the back is facing towards you. Step 2. Position the hole of Z-axis motor assembly at the threaded hole of the aluminum profile (L) in the base (Ba), secure with M4*18 screws, and tighten the screws with a 2.5mm Hexagon wrench. Loosen the screw Step 3. Use a 2.
Step 6. X-axis bearing installation preparation Prepare the following parts: a. Aluminum profiles(B1)-(1x) b.M4x16 Hex drive rounded head screws (4x) c. M4 Washer (4x) d. Extrusion assembly (E) (1x) e. Nozzle kit (N)-(1x). The wiring harness of component (N) and component (Ba) has already been connected. f. Timing belt(Be)-(1x) g. Pulley assembly(K2)-(1x) h. Belt tensioner(K1)-(1x) i. 2.
Step 7. X-axis assembly (part 1) Step 1. Assembly of aluminum profile (B1) and extrusion assembly (E). Aluminum profile (B1) is shown in the diagram on the left(1). Pay attention to the position and direction of the large hole. Align the hole of extrusion assembly (E) with the threaded hole of aluminum profile (B1), it should be noted that the hole has two plates, which aresecured with M4*16 screws, and fixed to the second profile plate and the aluminum profile (B1).
Step 8. X-axis assembly (Part 2) Step 1. Prepare belt tensioner assembly (K1) and 3mm Allen key. Step 2. Rotate the X-axis assembly 180°horizontally. Step 3. Pick up the belt tensioner assembly (K1). Loosen the T-nut by hand until it is at the end of the threads, but not so far it might fall off. Then, fit into the slot in the aluminum profile. When the bolt is tightened, the nut rotates 90 degrees and then grasps the inside of the slot. Step 4. Align the T-nut with the top aluminum profile groove.
Step 9. X, Z bearing assembly Step 1. Prepare 2mm and 2.5mm Allen key. Step 2. The direction of the base (Ba) keeps the end in front and rotates the X-axis assembly horizontally by 180°. Step 3. Align the pulleys on both ends of the X-axis assembly with the aluminum chute on the base (Ba). Align the screw rod with the nuts in the extrusion assembly (E). Use the appropriate Allen key to slightly loosen the screws that holding the nuts. Mount the X-axis assembly on the base (Ba) Step 4.
Step 10. Fix the gantry frame Prepare the following parts: a. M5x25 socket head hex screws (4x) b. M5 Washer (4x) c. Profile end caps(C)-(2x) d. Aluminum profiles (B2)-(1x) e. 4mm hexagon wrench Step 1.
Step 11. Rack installation Prepare the following parts: a. Plastic tube（R1）-(1x) b. Plastic nut (2x) c. Sheet metal bracket（R2）-（2x） d. M5x8 Hex Drive Rounded Head 1 2 Screws (2x) e. M5 T-nuts (2x) f. 4mm Allen Key Step 1. Install one end of the plastic tube (R1) on the sheet metal bracket (R2), hand-tighten the plastic nut on the end of the plastic tube (R1) and tighten by hand. Step 2. Use a M5x8 screw to pass through the hole of the sheet metal bracket (R2).
Step 12. Tube and wire connection Step 1. Rotate the printer by 90º 5 1 2 6 Step 2. Find the letters on the 1/2/4/7/8 wire harnesses, as shown on the left, and insert it according to the position indicated by the red arrow on the drawing. After the insertion, gently pull on it to insure it’s firmly seated. Note that the X/Z wide plug corresponds to the motor, and the narrow plug corresponds to the limit switch Step 3. Red and black heated bed connector (3#) connector can be directly inserted.
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