Quarter Inch Driver Bit Holder

This is a parametric Openscad design

length can be adjusted
baseW = 275.7;
as well as the number of bits
number_of_bits = 27;

If you need help filling your print with bits this is one of the most inexpensive sets I have seen on amazon and it works with both standard and security screw bits https://www.amazon.com/Neiko-10048A-Security-Vanadium-100-Piece/dp/B000O5XDOG/ref=as_li_ss_tl?ie=UTF8&qid=1538623176&sr=8-35&keywords=1/4+inch+driver+bits&linkCode=sl1&tag=schawk-20&linkId=7a5fbc816be813f873092c4b6548c4b0&language=en_US