Make some ice-samples. I made small prisms 40x40x160mm. Attach some weights to a metal wire (copper is even better). Hang the wire over the middle of the sample and magic will happen.
![](https://primary.jwwb.nl/public/g/n/b/temp-xyejwdmbmebektllxyfp/fjz2i6/ice1.jpg?enable-io=true&enable=upscale&crop=1920%2C960%2Cx0%2Cy0%2Csafe&width=618&height=309)
![](https://primary.jwwb.nl/public/g/n/b/temp-xyejwdmbmebektllxyfp/1rxasa/ice2.jpg?enable-io=true&enable=upscale&crop=1024%2C2048%2Cx0%2Cy0%2Csafe&width=307&height=614)
Make some ice-samples. I made small prisms 40x40x160mm. Attach some weights to a metal wire (copper is even better). Hang the wire over the middle of the sample and magic will happen.