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Custom Dies

Expansion Box Kit

(Expanded Extruder Package Shown)


The Expansion Box is an extruder accessory that allows  the  user to produce larger extrusions from their North Star 4? extruder.  This is accomplished by adapting the bottom portion of a detachable box to fit North Star?s selection of 6 inch Dies. We have a selection of stock 6? dies available & custom dies are quickly made and inexpensive.

Whats Included in the Kit

The kit includes: The expansion box, die retainer ring and mounting bolts, hex wrench, spacer board and hardware.


The expansion box is made of high quality aluminum. All the mating surfaces of the expansion box are machined flat for a tight seal. The die retainer mounting ears have steel inserts for the bolts to screw into. The ears with slots of the expansion box are machined to slide easily onto and out of the extruder. The die retainer ring and the hardware is made of steel. All outside surfaces are powder coated for a durable lasting finish.

  •  Fits all 4" North Star Extruders

  •  Mounting Hardware & Instructions Included

  •  Quick Installation & Easy Clean Out

  •  Complete Line of Dies

  •  Accepts Custom Dies

  •  Built to Last a Lifetime & Made In U.S.A. 



(Expansion Box Package Shown)

To view prices and order please select the product from the drop down menu, located at the top of this page.

 6" Expansion Box Dies

The 6" extruder dies are made of 3/4" HDPE (High Density polyethylene). Which is extremely wear-resistant and completely non-contaminating. The top edge of the die cavity is beveled to compact the clay as it passes through, giving a crisp, more solid extrusion. In the hollow dies, there is a bevel on both the interior and exterior portions under each side of the bracket (which holds the center of the hollow dies) that helps the extrusion to "heal" after is has been cut apart by the bracket. This bracket fits into a slot machined into the top of the hollow die and is held in place by the barrel of the extruder. If a hollow die is mounted in place, the center part of the die is in exactly the right place and the wall thickness will automatically be even all the way around. In general, the walls of extrusions 3-1/2 inches OD or less are 1/4 inch thick, while larger pieces have 5/16 inch walls. We have a selection of stock 6? dies available & custom dies are quickly made and inexpensive.

Custom Dies Available
(Custom die order forms.)
6" Extruder Dies
(Click on button to view dies.)

North Star offers a full line of other die sets and individual shapes. To view shapes and sets please select set from Drop Down Menu or Click Button Above. Located at the top of this page.


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