Makerbolt brackets
thingiverse
Some brackets to fit Makerbolts. I've been using aubenc's (http://www.thingiverse.com/thing:9095) because I like the knurled surfaces. You should easily be able to scale these to fit my 400% ridiculous megabolt (http://www.thingiverse.com/make:25440) although you might need a Gigabot to print the crown bracket :-)
Download Model from thingiverse
With this file you will be able to print Makerbolt brackets with your 3D printer. Click on the button and save the file on your computer to work, edit or customize your design. You can also find more 3D designs for printers on Makerbolt brackets.