Thanks for listing what you bought.
Out of curiosity (being rather clueless yet attempting to learn over the past two years)
how could I cut pieces larger than the collet shaft's bore?
I'm working with wood so I was thinking I could mill out circular plate of corian or delrin,
attach a 1/2" shaft to it one way or another, then from there use the adhesive (the miraculous wonders of double sided tape or hot glue ) of my choice to fasten wood or whatever to the plate. Obviously this wouldn't be very precise but I've yet to make a single machine part for anything, so relative accuracy is to me is better than global accuracy.
The other choice I had for a 4th axis was a 30 watt servo attached to a 1:100 harmonix drive, but I lost the bid due to my lapse in attention, and I WON'T (it was hard to find since it wasn't called by any useful keywords) be finding another one for $50 again any time soon.
To thoroughly ice the cake I saw a youtube video fo a guy using a similar model for milling aluminum