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In this project, I’d like to share how to build a homemade 3 axis P-CNC machine with its frame and supports made of PVC pipes and acrylic sheets. It has two operation modes: pen plotting and laser engraving.

1. Main materials:

1pcs x 3 Axis Control Board GRBL With Laser Engraver Supported.
1pcs x 2500mW Laser Module.
3pcs x Stepper Motor Driver A4988.
3pcs x Stepper motor NEMA 17.
2pcs x GT2 6mm Closed Timing Belt 200mm.
2pcs x GT2 Timing Pulley 20 Teeth.
2pcs x GT2 Timing Pulley 60 Teeth.
3pcs x Round Shaft Diameter 8mm, Length 400mm.
3pcs x T8 Lead Screw 2mm Pitch, 8mm Lead , Length 400mm with Copper Nut.
20pcs x Ball Flanged Shielded Bearings 8 x 22 x 7mm.
1pcs x Aluminum Flexible Shaft Coupling, Inner Hole Size: 5mm x 8mm.
1pcs x Aluminum Flexible Shaft Coupling, Inner Hole Size: 10mm x 10mm.
1pcs x Power Supply 12VDC.
2pcs x Clear/White Acrylic, size A4, thickness at least 5mm.
4pcs x Copper Brass Pillars L-5/10mm.
1 meter x 8P/16P Rainbow Ribbon Cable.
Some small cable ties, cable spiral wrap, M3/M4 bolts and nuts, some small neodymium magnets.
2. PVC pipes and its fittings (with some spares):

8pcs x PVC Pipe Elbow Ø42mm.
8pcs x PVC Pipe Straight Connector Ø42mm.
14pcs x PVC Pipe Tee Ø42mm.
3pcs x PVC Pipe Cross Ø42mm.
16pcs x PVC Pipe End Cap Ø42mm.
6pcs x PVC Pipe End Cap Ø60mm.
3pcs x PVC Reducer Ø60mm to Ø42mm.
2pcs x PVC Reducer Ø50mm to Ø42mm.
2 meter x PVC Pipe Ø42mm and Ø60mm.
3. Tools:

Drilling machine with drill bit hole 8/22mm.
Hand saw.
Hand grinder.
Soldering machine.
Big scissor.”

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