DIY RepRap 3D Printer for Beginners – Part 1: Build

• Intro & Step 1: Build Top Plates
• Step 2: Build Linear Sleds
• Step 3: Build Extruder Sled
• Step 4: Build Extruder
• Step 5: Build Z-axis
• Step 6: Finishing Touches

Step 5: Build Z-axis

1) Take the build plate support block. Mark the block on either side in the center, 2 cm from the longest edge. Drill the hole with the 11/32-in drill bit. Push the nuts from the thread screws through each hole. It should be a tight friction fit. For added stability, use #8 1/2-in screws to secure the nut.

Figure 20: Plate support

2) Place the shaft couplers on the two remaining stepper motors and use a hex key to tighten them as appropriate. Place the thread screws in the other end of the shaft couplers and tighten them again. Use Zip ties to secure the stepper motors to the bottom of the milk crate.

Figure 21: Stepper with shaft coupler attached

3) Place the build plate support on the thread screws and twist the screws to lower the plate. Slide the top plates over the thread rods to make sure everything is in place.