A master-level guide to fabricating a highly precise, faceted geometric concrete planter using a custom-poured silicone mold. This plan covers the construction of a reusable, ultra-sealed melamine mold box, a precision-mitered MDF geometric master pattern, a matching inner core block to form the soil cavity, and the specifications for casting both high-durability silicone and fiber-reinforced concrete.
advanced wood other
Materials
- 3/4" Double-Sided Melamine
- 3/4" MDF (Medium Density Fiberboard)
- Smooth-On OOMOO 30 Silicone Rubber
- Quikrete Countertop Mix (No. 1106-80)
- Alkali-Resistant (AR) Glass Fibers
Tools Required
- Table Saw with Digital Miter Gauge
- Random Orbital Sander
- Pneumatic Brad Nailer (or 23-Gauge Pin Nailer)
- Hot Glue Gun & Caulk Gun
- Digital Scale (Gram Precision)