How easy is it to copy a physical object? Very easy (in this special case).

The Old Government Buildings in Wellington is one of the largest wooden buildings in the world. I’ve walked past it on a regular basis for fifteen years but it wasn’t until this morning that I noticed the beautiful cast iron grills over the ventilation holes to the sub-floor. So I thought – I want that.

You can just see one of the grills, at the bottom right half-hidden by trees.

Copying the design took nothing more than a quick photo, then tweaking the image in Gimp, getting Inkscape to trace the outline and make a vector file, import that file into Fusion 360 and make a solid body, and then messing about for too long making tool paths. Total time from uploading the picture to starting the router was an hour and I could have done it in half that if I hadn’t been messing about.

Cutting this out took four hours, but I expect I could get that down to under two with more CAM experience (I’m still a real novice at that part of the process). Turned out not too shabby.

So how easy is it to wander along, see something you like, and copy it? Pretty trivial, provided that what you want is a 2D shape that can be cut on the machine you have in your workshop and you’re not concerned with making it the same size.

Regarding intellectual property here – NZ allows architectural works to be copyright, which includes the exclusive right to copy that work. This building was originally built for the NZ civil service, so it either falls under Crown copyright or the copyright of the architect William Clayton. However, NZ copyright is only fifty years and this is from 1876, so I think anyone can copy this now.