Hi, Heather, and welcome! May i assume you are female? If so, even better, as we have very few (only one that post regularly, Tamra).
You questions are a bit broad. Would help if you described what kind of work you wish to do with the Unimat.
Also, which Unimat do you have?
For instance, as far as collets are concerned, there are the very small watchmaker collets that require a different spindle.
But the "regular" collets come in different size series. You can get holders for these aftermarket or OEM. The aftermarket ones are cheap, but vary in usability. Some who have bought aftermarket holders had to work on them to get them to run true on the Unimat.
OEM ones will fit the machine readily and be accurate, but are generally only available on eBay, so that often means pricey.
Since I assume from your email you are in the UK, someone else will have to advise about cut-offs.
Martin P.
