About this 3D model

I have a Robot Digg extruder: http://robotdigg.com/product/70/MK7-Molded-Drive-Block for a little while, but I have not been able to use it, in a Bowden configuration, so I finally got around to designing this. The OpenScad file is included, but quite messy, I did have a fillement runout during printing, But still good. I would recomend printing at a high infill, I printed this @ 40%, which was not quite high enough for M5 tapping. So I had to oozzee some Super glue in !! Enjoy Ceri