Plaster Calculator

Calculate the amount of water and plaster you will need for various solid forms.

https://plaster.glazy.org/

Bookmark this link on your phone’s browser for easy access!

The code is open source and available on Github:

https://github.com/derekphilipau/vue-plaster-calculator

Inspired by Keith Simpson’s (@earlyamericanrobotpottery) plaster handout and the USG plaster calculator.

The calculations are from USG (https://www.usg.com/), Keith Simpson (Alfred University), and Andrew Martin (“The Essential Guide to Mold Making & Slip Casting”).