About this 3D model

I designed a set of Mitre Slot Bars to use with the featherboard I found on Thingiverse from user mar363636 http://www.thingiverse.com/thing:231242. Now I don't have to go buy a set. So far the printing two of these featherboards has saved me $40. They work very well. I posed a video on youtube to show how well they work. http://youtu.be/dyfZ0pj_b2c