Mix Master
Five walls, three dials each. Get the hurd, binder and water within 15% and JAX calls you a mix master.
🧱 Dial in hurd, binder and water for 5 hempcrete walls. Graded by the real estimator.
- Five walls. For each one, dial in bales of hemp hurd, bags of lime binder and gallons of mixing water.
- Land every line within 15% of the estimator's number for a perfect 10. Closer is better.
- Graded by the same math as the Material Estimator — planning estimates, not engineering quantities.
Practice rounds use a random set and earn fewer points. Signed-in members bank points and share one daily challenge; guests play a separate warm-up round for fun. A round scores up to 50; each game banks up to 60 base points a day, before your tier multiplier. How points work.
Mix Master leaderboard
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Best daily-challenge score per member. Ties go to the faster round. Weeks start Monday 00:00 UTC.
About this game
Cast-in-place hempcrete is hemp hurd, a lime binder and water. Mix Master gives you a wall area and thickness and asks how many bales, bags and gallons the job needs. Open the recipe on each wall if you want to work it out — volume first, then the mix per cubic meter, then packaging and a waste allowance.
Scores are graded against the Hempcrete & Hemp Insulation Material Estimator, so what you practice here is exactly what the estimator will tell you for a real wall. Ready to build? Submit a project and get matched with suppliers, or find hempcrete builders and developers.
These are planning estimates, not engineering quantities. Real jobs vary with the binder brand, the wall system and site conditions — confirm quantities with your installer or engineer.