Mill Extended Headstock Spacer Block


SKU: 1299 Category:

Product Description


Having the option to extend the headstock further out can sometimes allow surfaces to be machined that could not otherwise be reached without breaking down the setup and re-clamping the part. The spacer moves the spindle out an additional 2-1/2″. This is twice as far as the standard spacer block. Making it in one piece rather than stacking up two standard spacer blocks increases the mill’s rigidity and accuracy. It is much easier to increase your machinable surface area by using this spacer than to re-clamp the part in many cases. Precisely machined keyways keep the headstock accurately aligned. A precision ground alignment key is included.

NOTE: This part is not recommended for use on the Sherline lathe.



The improper use of machine tools and their accessories can result in serious injury. Before using this tool, thoroughly read the instructions and make sure you understand its proper and safe use.


Always wear safety glasses when operating machine tools.

Download PDF 1299 Instructions

Instructions PDF Download

Riser Block
Riser Block Body Material Aluminum
Body Coating Black Anodized
Body Dimensions (H x W X D) 2.5″ x 2.5″ x 3″
Pivot Pin Case Hardened 12L14 Steel
Alignment Key Material Precision Ground Steel
12955 Headstock Column Spacer-Double
12980 1/4-20 X 3/8″ Flat Head Machine Screw, Slotted
12990 Riser Pivot Pin