Single Spool Holder

This design is an improved version of the rod support (thingi https://www.thingiverse.com/thing:2512926) for the long spool holder (thingi https://www.thingiverse.com/thing:2512609).
However, you can use two of this to make a single spool holder. To strengthen the base, you can use the stock Anet A8 rail, or the end brackets from thingi https://www.thingiverse.com/thing:2512609
Need 4 M3-12mm or 16mm screws and 4 nuts.