Back by popular demand (you know who you are)... another Jansen linkage, in a shiny Makerbot friendly edition (some assembly required, your mileage may vary, multiple prints required). This one uses TBuser's pin library v2. I added the file for convenience but its origin is http://www.thingiverse.com/thing:10541. The pins break too easily, even when the linkage is big (and that's why its still a thing in progress). I toyed with different pin designs without success. Then I started using acetone... and it got messy so I want to avoid it.I'm thinking about printing the pins separately using a different orientation (a nice feature of the pin library). Any suggestions? Print all 3 trays Assemble Now is a good time to take a picture Crank it up (slowly...)This is a big thing. If you want to scale it down, remember to take note of the scaling factor.