Specialized ridged section tests glaze breakage for thorough ceramic analysis
Smooth side demonstrates glaze flow for evaluating surface effects
Stable base allows safe kiln use while remaining portable for wall hanging
Rim prevents clay from oozing sideways, ensuring clean extrusion
Fits most 4x4 inch clay extruders for broad compatibility
Summarized by Shop
This die extrudes a shape to test glazes.
The tile has several features that might be of interest during glaze testing. On one side, a section of ridges tests how a glaze breaks across surfaces. The opposite side is smooth to see how the glaze flows down a straight wall. There is room below the ridges for a small stamp. The base is stable
Overall Height
2.5 in
Base Width
1.75 in
Overall Thickness
0.25 in
Die Dimensions
4.75 x 4.25 in
Material
Plastic
Color
White
Summarized by Shop
4.8
4 ratings
5
4
3
2
1
Test tile die for NorthStar extruder.
I bought the die that said it was for the NorthStar extruder. Well, it didn’t fit. The one side was 1/2 an inch too long. We cut off the excess with a jigsaw and then it fit. Made gorgeous test tiles. We needed 500 for a workshop, and using the big blue NorthStar extruder, we got them done in about 3 hours. So great die! Just the wrong size.
D
Danielle · August 12, 2026
They look good but haven’t used them yet
J
James · December 11, 2025
Perfect way to make test tiles
This extruder die makes it easy to create test tiles. The shipping was fast, and the quality of the product is excellent. Thank you.