A comprehensive guide to constructing a highly precise, geometric truncated-pyramid concrete planter. This plan details the fabrication of a custom MDF master model, a liquid-tight melamine mold box (which doubles as the rigid mother mold), the casting of a durable silicone mold, and the final reinforcement of high-strength concrete utilizing alkali-resistant glass fibers.
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Materials
- 1/2-inch Melamine-Faced Particleboard
- 3/4-inch MDF (Medium Density Fiberboard)
- Liquid Platinum-Cure Silicone Rubber
- High-Strength Countertop Concrete Mix
- Alkali-Resistant (AR) Glass Fibers
Tools Required
- Table Saw
- Hot Glue Gun
- Digital Scale
- Random Orbital Sander
- Pneumatic or Manual Caulk Gun