mechanical calculator WIP

I was hoping to move faster than this but update:
ALL PARTS ARE HERE!
scale is in inches some software will not load with proper scale adjust as needed.
some of the parts should not be printed but should have metal parts found to replace them for life size print.
I don't know when I will be able to do any more if you want to take over at any point do so no hurt feelings, I want this done, I don't have a lot of time, go for it. All I ask is you mark this as Remix Source.