About this 3D model

Use zero top layers to expose the fill and hex infill to customise the hole size. 10% fill makes 18mm holes, I found 15% giving 12mm a good size. The pair are at 100% scale and the larger one at 150% Derived from [cerberus333](http://www.thingiverse.com/cerberus333/overview)'s [Frankenstein's monster bust](http://www.thingiverse.com/thing:23385) The red one in the photo is [mizliz](http://www.thingiverse.com/mizliz/overview)'s [Frankenstein Walker](http://www.thingiverse.com/thing:25467), watching the hex fill while printing it inspired the holder idea. NOTE: Licence is NON-COMMERCIAL - you can't make money without permission (including from the parent authors of derivatives/remixes)!