Simple Parametric Allen Hex Key Holder, with text!

Extension of the excellent parametric allen key holder by fumbucker.

I parameterised a few more options and added comments. And most importantly, **added labels to the key holder slots**. Now you can find your 7/64" amongst your 1/8" and 3/32", or your 2.5mm amongst your 2mm and 3mm.

For those just looking for a holder for their [25 Piece Hex Key Set](https://www.bunnings.com.au/craftright-25-piece-hex-key-set_p6060278), I've included a model for every combination of imperial / metric, smooth / bumpy, debossed / embossed, and vertical / sideways text options. So you can just download, take your pick and be on your way.

For those who want to customise, the introduction of text brings some important caveats:

- Render time in OpenSCAD has gone up significantly. Either disable the labels or the cut (seriously) while iterating to save a heap of time.
- I picked a font and sizing that worked nicely for me. The model doesn't come with fonts, so you may need to find something that