Threaded tap holder

Inspired by [this](https://www.thingiverse.com/thing:2200183) and an upcoming delivery of a dozen more threaded taps, I thought I'd better make a holder for my most-used ones.

I didn't want a hole for the wrench like 2200183 as I have at least three different types/sizes of wrench, so I decided to make the middle hole to fit all of the tiny M1-M2.8 taps I have that are only about 3cm long and under 3mm diameter.

I've not made it a Customizer as I don't think the [threads](http://dkprojects