This is a CNC plasma cutter in an aluminium box for safely cutting metal next to your 3D printer.
I use it for cutting metal parts in my office. It is vented and has an enclosure so sparks and fumes will be kept inside.

• Build volume ca 750x350x10
• Ventilated housing to keep the cutting sparks inside and direct the fumes outside
• Powered by RAMPS 1.4 with Marlin Firmware
• 24V
• All parts from Amazon, Ebay and local Hardware Store

BOM:

Frame:

• 4x 1200mm 3030 aluminium profile
• 8x 540mm 3030 aluminium profile
• 16x 3030 corner brackets
• 3030 x M5 T-nuts
• M3x20mm screws
• M5x20mm countersunk screws
• M5x10mm screws
• M5x12mm screws
• M3 nuts
• M5 nuts
• washer 5,3x20x1,5 mm
• 1x aluminium sheet metal 1200x600x5
• 3x aluminium sheet metal 1200x600x2
• 2x aluminium sheet metal 600x600x2
• 1x polycarbonate sheet 1100x400x3
• 2x hinge
• 4x flap closure
• 1x spigot Ø100 for exhaust air hose
• 1x aluminum exhaust hose 6m
• 4x ventilation grilles 70x70
• .>18,42m chimney sealing cord flat 30mm
• 1,5mm² yellow/green grounding cable to connect all aluminium surfaces to each other and to the ground
• cable lugs
• 1x rubber mat 500x400
• 1x fitting 1 1/2" 90°
• 1x fitting 1 1/2" double brass
• 3030 x M5 sliding blocks
• 1x 120mm plastic handle

Y Axis:

• 4x 590mm Ø12mm linear rod
• 8x SK12 linear rod holder
• 8x LM12UU
• 2x 180mm 3030 aluminium profile
• 2x 1190mm 3030 aluminium profile
• 6x 3030 corner brackets
• 3030 x M5 T-nuts
• M5x10mm screws
• M5x20mm screws
• M4x20mm screws
• M4 nuts
• M5 nuts
• 2x Nema 23 stepper motor
• 2x GT2 10mm belt
• 2x pulley 20T 6.35mm bore GT2
• cable drag chain 15x30mm
• M8x30mm screws
• M8 nuts
• washer 8,4x16mm
• washer 8,4x30mm
• 8x Bearing 608 ZZ 8x22x7 mm

X Axis:

• 2x SBR12 rail 1000mm
• 4x SBR12UU
• M4x10 screws
• 4x 130mm 2020 aluminium profile
• 2x 400mm 2020 aluminium profile
• 1x 90mm 2020 aluminium profile
• 10x 2020 corner brackets
• 2020 x M5 T-nuts
• 3030 x M5 T-nuts
• M5x8mm screws
• M5x10mm screws
• M5x20mm screws
• M4x20mm screws
• M4 nuts
• M5 nuts
• 1x Nema 23 stepper motor
• 1x GT2 10mm belt
• 1x pulley 20T 6.35mm bore GT2
• cable drag chain 10x20mm
• M8x30mm screws
• M8 nuts
• washer 8,4x16mm
• washer 8,4x30mm
• 8x Bearing 608 ZZ 8x22x7 mm

Z Axis:

• 4x SK10 linear rod holder
• 2x Ø10mm linear rod
• 1x T8 leadscrew
• 1x T8 nut
• 1x 5mm to 8mm motor jaw shaft coupler
• 2x LMH10UU
• M5x10mm screws
• 2020 x M5 T-nuts
• Nema 17 stepper motor
• M3x10mm screws
• M3x20mm screws
• M4x20mm screws
• M3 nuts
• M4 nuts

Water Table:

• 1x stainless steel tub 1100x450x70mm
• 19x galvanized sheet metal 400x50x2mm
• 2x galvanized U-profile 1,5x35,5x1000mm

Electronics:

• Display Case: https://www.thingiverse.com/thing:87250
• Fan Grill: https://www.thingiverse.com/thing:2802474
• case 500x400x175mm
• IEC socket with fuse and switch
• LED lamp 12-80V
• ReprapDiscount Full Graphic Smart Controller
• RAMPS 1.4
• 12V 6A Ø100 fan for exhaust air hose
• 3x 12V 120mm fan
• switch (enable/disable plasma trigger)
• 2x WAGO 221-413 (for connecting the 12V 6A fan)
• 4x WAGO 222-415
• 3x stepper driver Nema 23
• 1x stepper driver Nema 17 (for optional THC)
• relais module
• motor speed controller DC 9-50V 40A 2000W PWM
• power supply 24V 20A
• 2x DC DC converter 4,5-30V 12A (one for 12V 6A fan and one for RAMPS 1.4)
• wiring channel
• (optional) thermristor to show room temperature on display
• labeling zip ties
• normal zip ties
• labeling machine (optional)
• wire ferrules
• cable lugs
• cables 4x0,75mm² for stepper motors
• cables 2x0,75mm² for plasma trigger
• cables 1,5mm² brown, blue, yellow/green for AC wiring
• cables 1,5mm² yellow/green for connecting the frame to ground
• cables 1,5mm² red, black for DC wiring
• standard stepper motor cable for connecting GND, EN, STEP, DIR to stepper motor driver
• jumper wires to connect GND to EN-, DIR-, STEP- on stepper drivers
• jumper wires to connect the relais module to RAMPS 1.4
• USB cable for programming RAMPS 1.4

You also need:

• air compressor
• plasma cutter (it´s important to use one with pilot arc because HF - Start can disturb the electronics)
• window or good ventilation
• fire extinguisher for safety if something goes wrong
• towel if water leaks
• safety glasses for welding/plasma cutting

Setup:

• I´ve uploaded my Marlin Setup. Upload it to your RAMPS 1.4 / Arduino Mega via the Arduino IDE and it should work.

Operation:

• For creating the drawings for cutting you can use Inkscape and Fusion 360
• For creating the cutting paths you can use Estlcam
• In Estlcam you can save the paths as .gcode file on your pc or SD card
• Then you can insert the SD card in the ReprapDiscount Full Graphic Smart Controller or control your RAMPS 1.4 board using your favorite slicer program
• Move your plasma cutter to your desired start point and select on the ReprapDiscount Full Graphic Smart Controller prepare > set origin or send G92 X0 Y0 Z0 via your slicer software
• Make sure the compressor and plasma cutter is running, the right amps setting is set, the ventilation is running and the plasma trigger switch is on
• start your file
• enjoy

It is recommended to keep the door open when not in use to prevent the formation of moisture and possibly hydrogen when cutting aluminum

https://youtu.be/VfcpGsx3_40