The Multimaterial Dragon

From the recent video, here are a couple of images of the dragon, cut from acrylic, aluminium, corian, carbon fibre, brass, copper, MDF, ply and melamine (and the assembled dragon is acrylic and aluminium).

colour dragon02 dragonheadDesign from MakeCNC.com

Just been to the aluminium merchants, and picked up another $600 worth of aluminium sheet, from 1.5mm to 6mm thickness for some upcoming projects.

Episode 115 Here be Dragons CNC

Design from MakeCNC.com

Multiple Materials

I’ve been trying out some different materials on the CNC, using some of the other router bits in the Toolstoday.com Master Collection.

Using the 51411 “Spiral ‘O’ Flute” upcutting plastic cutting solid carbide bit, I tried a bit of polycarbonate.  This is 3mm thick, which ideally suits the plans I currently have.  I started with some clear, to try it out as much as anything.  I slowed the feed rate down (given I am currently restricted to 12000RPM), then slowed it down further.  I found it ran pretty smoothly at 10mm/sec.  I plunged at the same speed, but for future reference, ramping the bit down should be a better approach.  With a 1.5mm depth of cut, things worked pretty well.

dragon-1My next endeavour will be to approach the same model again, but choose different materials for the different components.  So far I have about 4 different polycarbonate colours (one being fluoro), some aluminium and brass in the design.  Hopefully it will all work together and not look too mismatched.

Clear red poly for the flames, aluminium for the nostril smoke, and for the centreline of the body (up to and including the tail), brass for the small plates on the underbelly (like Smaug and his gold-encrusted hide), and a combination of solid green poly and fluoro green poly (for the scales, and head).

Chinese Dragon

Plans from MakeCNC

SSYTC055 Routing the Japanese Dragon (CNC)

SSYTC055 Routing the Japanese Dragon (CNC)

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