Flow tester model you can 3D-print yourself

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This is not the mold, this is a model of what the mold enables you to make out of clay. Your printer should be able to make this with no support and no infill since there are no extreme overhangs (configure the slicer accordingly). This can be useful as a demonstration. It prints quickly and takes only 47g of PLA filament. It is 10% larger than fired testers will be.

Related Pictures

Your on-ramp to DIY glaze could be slip casting!

For any potter or hobbyist, making your own molds and slip casting presents amazing options. Making this melt fluidity tester will get you started in 3D printing, pouring plaster to make a mold and slip casting a melt fluidity tester. These will then help you understand glazes, including commercial ones, much better.

Consider what the melt flow tests shown here demonstrate: Is a new brand-name material the same (e.g. tin oxide, feldspar, dolomite, Alberta slip)? Does a glaze recipe pass a sanity check? Is a batch of frit bad? Is a frit better for sourcing B₂O₃ than Gerstley Borate? Is a glaze matte because it is not melting enough? Is a glaze too reactive? Is a manufacturer's claim correct? Will a stain or metal oxide addition make my glaze melt more or less? Does a material substitute work as well as the original? How does a frit soften and melt over a range of temperatures? Do glazes of the same chemistry but different recipe really melt the same? Is this glaze prone to bubbling? Does a glaze melt have high surface tension?

Here is what you need: A geeky family member having a 3D printer, a blender, powdered slip casting clay, deflocculant, plaster and a 2000g 0.1g scale. This page is the "Next" button to get started. Everything you need to know is here.

Downloadable 3D model for melt flow tester block mold

This is a 3D rendering of our melt fluidity tester. We have promoted this device for many years as an effective way to compare fired glaze properties (e.g. melt fluidity, surface tension, bubble retention, crystal growth, transparency, melting range, etc). Download the 3MF format file, open it in your slicer software and 3D print it. Then fill it will plaster and you have a working mold to slip cast these testers. With 0.8mm thick walls, it 3D prints quickly and is easy to remove from the plaster using a heat gun. The halves interlock using natches (requiring out embeds and related parts). The mold halves can also be lined up by the outer edges before clamping them together (thus not requiring natches).

Flow tester model you can 3D-print yourself

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Your on-ramp to DIY glaze could be slip casting!

Downloadable 3D model for melt flow tester block mold

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