Larger clamp for breadboard vise

The [original model is a vise](http://www.thingiverse.com/thing:957376) to hold a breadboard and some little computer boards such a a raspberry pi or arduino. I keep many of my little boards in cases which make them bulkier. They are too bulky for the clamps for that vise to hold securely.

Thanks to the original creator posting the scad file, I was able to change the length of the arms to much longer. The result is that when they can be extended further without becoming unstable. The do