Adjustable Silk Road Pneumatic Post Capsule

Adjustable Seidenstrasse Rohrpost Capsule -- I made an adjustable Rohrpost-Capsule for the CCC-Camp 2015 and upcoming CCC-Congresses for use with the Seidenstrasse-RohrpostSystem. The Capsule is adjustable within the scad-file, but not fully parametric due to lack of time remaining to the Camp. Main Features of this Capsule are: Thiner middle area for better movment in tight curves. Integrated and adjustable holes for LED-stripes and cableties to secure them. the "bulky" area on both sides sould be the right size to add velcro on the outside. sliding rails with an endstop to the bottom to insertplates out of plastic, wood or metal, e.G. to mount your favourite electronics to it (the "default" adruino-pcb-width matches exactly between the rails, even thou this is archieved by accident [uno,leonardo, ethernet duemilanove and mega 2560 are fitting in definitely, even 2 boards at the same time] the Rails have been originally desinged to house a raspberry PI, but there was n