The OXtruder may be the strongest extruder you might need, this design can be adapted to both 1.75 and 3mm filaments. 
This post is about making an adapter to be able to use the ISO30/NT30/BT30 milling tools that I own on my lathe. That is kind of a long header but that is what tis is all about, being able to use the same tools on… 
This is a super easy to build bluetooth interface for TTL glas/magnetic scales and rotary encoders that will work with the amazing TouchDRO Android app. This interface with some cheap or expensive scales will give you a super slick DRO setup for many different types… 