The hail-pad I designed has the ability to show size, number and direction of these hail-stones. Additionally, with the two-layer modelling clay system, it can be derived from the hail pad whether these stones were travelling at high speeds on their descent to earth, as they would expose the under-layer of clay in their imprints. This hail-pad is relatively water-proof and will not dry out due to reasons explained further in this instructable :)
In the end, creating one of these hail-pads costs roughly $2.09 AU ( NOTE: you can reduce the price significantly by $1.00 (therefore making it $1.09 AU) if you wish to not use the "two-layer clay" system but rather just one layer of clay, I believe it still provides accurate results). So without further to do, lets begin making one!
Step 1: Materials Required
- Two different coloured, medium-sized balls of soft modelling clay (approximately equals $1 each)
- One plastic plate (approximately $0.083)
- 20 cm of plastic wrap (approximately $0.01)
The reason I chose modelling clay is because it is designed for handling and playing with, therefore it is not meant to harden or dry out under many conditions. Thus modelling clay appeared to be the best choice for imprinting impacts of hailstones regardless of weather and temperature.