BLRP Bunnings Linear Rail Project

thingiverse

Bunnings Linear Rail Project I aim to build a mill, router, laser engraver and 3D printer from readily available and affordable components. The initial step is to create a linear rail with a lead screw for the Z axis, followed by a belt drive linear rail for X and Y axes. I'm counting on fellow makers to contribute to turning this concept into a fully functional machine. To facilitate collaboration, I've included the F360 project file so that people can modify and print as needed. I nearly opted for printing other machine designs but found that even though they're open source, project files are not always available. As a result, another design for a machine is now in existence - the BLRP. Each rail will cost approximately $110 AUD, making it very affordable for a 700mm travel linear rail. 1 x Spring: $4.60 1 x pack of 4 M6 X 60mm: $2.40 1 x pack of 4 M6 X 80mm: $2.40 2 x packs of 4 M8 X 20mm: $5 1 x 5/8 Threaded Rod: $10.90 2 x Steel 25mm Square Tube 1m: $16.30 2 x 5/8 Bearing: $7.60 2 x 5/8 Hex Nut: $0.90 8 x Roller skate bearing: $4.00 1 x NEMA 23 Stepper motor: $25 30 x 30 x 3.0mm 1m Aluminium Angle: $13.10 500g Filament: $15 The accuracy of the first prototype is satisfactory, with approximately 0.5mm of play over the 700mm. I'm hoping that the 3D printed parts are strong enough to support using the rails as a 3-axis router, which would enable the printed parts to be made from formply. Then, with the formply parts, thin aluminum could be cut to create the final machine.