Evolving Design through Rapid Prototyping

Here’s one part of the Makelangelo Drawbot as it has evolved over time. Note that this could not have been possible without rapid prototyping machines and software like Solidworks, RepRap 3D printers, and the Redsail laser cutter at the VHS.

Version 1 – 30 minutes for each piece. 10% of prints fail Quality Assurance or need cleaning up. Eight other pieces in three varieties need to be added to make this part work.

Version 2 – 70 minutes for each successful piece. 60% of all prints fail QA. Two types of screws need to be stocked to use this part.

Version 3 – 3 minutes for each successful piece. <5% of all prints fail QA. Two types of screws need to be stocked to use this part.

It’s finally fast enough that I can video the process.

With each new technology that becomes available I am able to iterate that faster and produce better parts. I’ve finally reached a point where I’m satisfied with these motor mounts and they will no longer be a production problem. The next challenge is to do the same for the bobbins, and then build a better pen holder. Where will I find A CNC lathe and a drill press?