Yet another design brought to the world courtesy of insomnia. :-) I saw the recently posted design "RedSnapper" by phenoptix. I liked it. It is a simple clean design - thanks. That being stated, I have been challenging myself to create designs that are as much 3d rendered as is possible. I.e. as little external hardware as is possible. Whenever external parts are needed, I try to design for those items that are readily handy in the shop...like rubber bands. :-) So, figuring that snapping 0.1 inch (2.54mm) pitch headers would be mostly what is used, this design is made for those. The design should readily scale to any of the other common sizes. The only things that might cause issue would be the rendering printer's discrete part clearance limitations. As just mentioned, the last design factor present is that all moving parts have a 0.6mm clearance. (excepting the small peg on top - might just use a small finishing nail or paper clip) I've learned that my particular printer is pretty good about not merging surfaces as long as 0.6mm is the minimum distance. Once printed, all that is left is filing and razor cutting away all the support material. Okay... I have now printed and tested it. It does basically work. However, I will be be uploading updates as I get spare time. Namely, some of the printed features are right at the edge of what my printer can do. For instance, some of the holes are too small to print nicely 100% of the time and the little slider comes out too brittle in its guide features. Also, the cutter point is to weak to do more than 1 or 2 breaks. I'll probably make an insert for a coin or a utility plade of some kind. If anyone else has suggestions, I'll see about working them in as I get time. I do hope this ends up being useful to someone. Who knows, maybe even myself; should I get a bit of free time to tinker further in the next few days Have a great day, Bill.