Customizable Square U-Bolt and Nuts

SummaryJust like the title says, it's a square U-bolt with matching nuts. Units are Imperial. Keeping the thread length as short as possible will drastically reduce the compile time and file size.Bear in mind this is a work in progress... and also my first Customizer model so if you notice any bugs just post it in the comments and I'll try my best to fix them. Caution: No input validation.Special thanks for Dan Kirshner for developing the very awesome OpenSCAD threads module that I used to create this. More info on that here:http://dkprojects.net/openscad-threads/Print SettingsNotes:Update 3/17/16: Added ability to create matching nutsUpdate 3/10/16: Bug FixI recommend using rafts for any bolt lengths over 1 inch, mainly to help prevent the extruder from knocking the model off of the build platform.No Supports are required.