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Square - 10x10 mm Pellet Press Die Set
Square - 10x10 mm Pellet Press Die Set

Square - 10x10 mm Pellet Press Die Set

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Pellet Die set for making 10x10 mm (~0.39x0.39 inch) square pellets from powders. 

With your die set order we’ll include:

  • Die sleeve
  • Plunger rod
  • 2 x spacers
  • Base plate
  • Aluminium release ring with cutout for viewing pellet during release

Shipping: Free fast shipping across USA and Canada

Material: hardened tool steel (Rockwell hardness >C60) polished to a high tolerance fit.

This set can be used for making 10x10 mm  square briquettes. The 10x10 mm (1/4 x 1/4 inch) Pellet Dies require a relatively small amount of material to make a pellet compared to the larger opening dies. 

The relatively small area of the die sets means that high stresses can be reached with minimal applied stress. Always check the required loading first to not exceed the strength of the die set.  Whilst dies steels are chosen for tolerating high stresses and pellet dies are heat treated fro superior properties, you can easily exceed even these high yield strengths with a hydraulic press with a few pumps of the handle. The diameter is small enough that pressing force can be applied manually with a lever press or arbor press. Take it easy and make sure students and interns are aware of the same!

Die made of hardened tool steel (Rockwell hardness >C60) for long lasting trouble free performance. Sleeve is polished to high tolerances to allow the hardened tool steel plunger to slide through perfectly. Plunger and spacers are made from high yield strength steel, machined and polished to high tolerance for the perfect fit. Interior surfaces ground to mirror-like finish.

Video shows smaller 6x6 mm square set for illustration purposes.

For an animation of die assembly, powder pressing and release click here.

Yield Strength Hardened Steel 80,000 psi (550 MPa)
Recommended max loading @ 50 % 40,000 psi (275 MPa)
Recommended max force 4800 lb (2.4 ton, 20kN)
Typical force for quality pellets 600-1800 lb (0.3-0.9 ton 3-8 kN)
Die sleeve cutout 10x10 mm (0.39x0.39 inch)
Die sleeve height 40 mm (1.57 inch)
Die sleeve outer diameter 45 mm (1.77 inch)
Assembled height with spacers (w/o powder)* 89 mm (3.5 inch)
Assembled height no spacers (w/o powder)* 73 mm (2.87 inch)

*If making thicker pellets, the die set can operate just the same without spacers.


  • Always wear googles and safety protection equipment
  • Clean well after use to prevent rusting.
  • Do not apply pressure beyond shown on table.
  • See our tips for making perfect pellets here.