How to Make a DIY "Scream" Costume

Materials:

* Frame:

* 2020 aluminum extrusion (8 pieces, each 350mm long)

* 4 corner brackets

* 8 T-nuts

* 8 bolts (M5 x 10mm)

* Motion system:

* 2 Nema 17 stepper motors

* 2 GT2 pulleys (20 teeth)

* 2 GT2 belts (250mm long)

* 4 LM8UU linear bearings

* 4 M8 threaded rods (300mm long)

* 8 M8 nuts

* 4 M8 lock nuts

* Extruder:

* MK8 extruder assembly

* 0.4mm nozzle

* PTFE tubing (1 meter)

* Bowden coupler

* 12V 40W heater cartridge

*Thermistor

* Electronics:

* Arduino Mega 2560

* RAMPS 1.4 shield

* A4988 stepper motor drivers (4)

* 12V power supply (at least 30A)

* USB cable

* Other:

* 3D printer build platform

* PLA filament

* MicroSD card

* Cura slicing software

Instructions:

1. Assemble the frame.

* Cut the aluminum extrusion to the desired lengths.

* Assemble the corner brackets to the extrusion using the T-nuts and bolts.

* Make sure the frame is square.

2. Install the motion system.

* Attach the stepper motors to the frame using the M3 screws.

* Install the GT2 pulleys on the stepper motor shafts.

* Thread the GT2 belts around the pulleys and tension them using the M8 nuts.

* Install the LM8UU linear bearings on the threaded rods.

* Insert the threaded rods into the frame and secure them with the M8 lock nuts.

* Make sure the threaded rods are parallel.

3. Install the extruder.

* Mount the MK8 extruder assembly to the frame using the provided screws.

* Connect the PTFE tubing to the extruder and the Bowden coupler.

* Insert the 0.4mm nozzle into the heat block and tighten it with the provided wrench.

* Connect the 12V 40W heater cartridge and thermistor to the extruder.

4- Install the electronics.

* Mount the Arduino Mega 2560 to the frame using the provided screws.

* Mount the RAMPS 1.4 shield to the Arduino Mega 2560.

* Connect the stepper motor drivers to the RAMPS 1.4 shield.

* Connect the 12V power supply to the RAMPS 1.4 shield.

* Connect the USB cable to the Arduino Mega 2560.

5- Install the build platform

Mount the build platform to the frame using the provided screws.

Make sure the build platform is level.

6- Install Cura slicing software

Download and install Cura slicing software from the Ultimaker website.

7- Configure the firmware.

* Open the Marlin firmware in the Arduino IDE.

* Select the appropriate board and port from the Tools menu.

* Compile the firmware and upload it to the Arduino Mega 2560.

8- Test the printer.

* Open Cura slicing software and load a 3D model.

* Slice the model and save the G-code file to a microSD card.

* Insert the microSD card into the Arduino Mega 2560.

* Power on the printer and wait for it to heat up.

* Select the G-code file from the LCD display and press the print button.

Tips:

* Make sure all of the screws are tightened securely.

* Double-check all of the connections.

* Calibrate the printer before using it.

* Use high-quality filament for best results.

* Have fun!