Dremel Trio to Festool dust extractor adapter

This lets you connect a [Festool dust extractor/vacuum](http://www.festoolusa.com/power-tools/HEPA-dust-extractors/) to the dust extractor port of the [Dremel Trio](http://www.dremel.com/en-us/tools/pages/ToolDetail.aspx?pid=6800) tool.

The file "vacuum adapter2.stl/blend" is an updated version that's shorter, with a slightly tapered head for a tighter fit on the Dremel side.