I've been bitten by the Curta bug...

Well, I have been bitten by the Curta bug and now I have to build one...  If you don't know, the Curta is the most successful handheld mechanical calculator in the world and has been obsessed over by engineers, tinkerers, and mathematicians since it was invented.  The complete backstory and latest info on it can be found here.  link

The parts are so small that a 3x build makes more sense, especially because Marcus Wu(in pic above) has already done some of the leg work and modelled and 3d printed one at this scale!  I will definitely be standing on his and other's shoulders throughout this build, but there will still be tons of work to do. 

As you can see, I have already pieced together the assembly from Marcus' stl files, now I have to go through every part and redesign it in Solidworks to be made how I want/need to make it!

I want to keep 3d printing to a minimum, use the tools I have, and maybe learn some new skills to make the pile of parts that will be needed.  Marcus' 3d printed Curta is beautiful but I want this one to be primarily made of machined or cast metals and plastics to make it more durable and in line with my design aesthetic.  The main goal will be to showcase the mechanisms that make the Curta work, so I will also probably leave off most of the external shell.  ​

As things progress, let me know what you think or if you have any suggestions!
Thanks,
​Chris