The advantages of this pen mandrel design are that spacers are no longer necessary to make up the difference between the length of the pen blanks and the mandrel. This also helps to eliminate any vibration encountered when turning blanks on a longer than necessary mandrel shaft. The length of the shaft is adjustable and can be shortened or extended by loosening the locknut at the headstock end. By simply removing the shaft, you also have a really compact and versatile collet chuck which is extremely useful for holding small components for turning. 

The mandrel diameter is about 7mm and will accept the majority of the kits without the need for extra components . However, some of the kits have larger diameter bores and will need additional bushing sets. This mandrels include 5 bushings.

PM-MT1: Pen Mandrel with MT1 adaptor for woodlathe headstock spindle

PM-MT2: Pen Mandrel with MT2 adaptor for woodlathe headstock spindle

PM-1-8: Pen Mandrel with 1"X8TPI thread adaptor for woodlathe headstock spindle

PM-3/4-16: Pen Mandrel with 3/4"x16TPI thread adaptor for woodlathe headstock spindle

PM-M33X3.5: Pen Mandrel with M33X3.5 thread adaptor for woodlathe headstock spindle

*  More different threads available as well.