Hello, this is my first time using a dremel to prepare fossils. I decided to begin testing the dremel on an enrolled trilobite with partial cephalon because I thought it would the easiest and it was already missing pieces. So far I am happy with the results, however, it's very difficult to get into tight areas with the factory issued tip (also I wish I would have started on a less anatomically complex position!) Anybody have suggestions on where to find fine tipped carbide needles for the dremel? can't seem to find any anywhere..Or other alternative methods ..I can't afford an air scribe right now, so that is out of the question..... Thanks