longer carriage for Zheng3 Penny Ballista

thingiverse

I encountered difficulties launching pennies with the Pennyballista from Thingiverse (http://www.thingiverse.com/thing:23464), because the standard penny carriage is extremely challenging to grasp firmly. Furthermore, the default-carriage doesn't stay on track during firing. Therefore, I created my own alternative solution. Now it works much better - it stays in place and is very easy to handle. I also made adjustments for firing euro-cents. Enjoy!