Week 09

Molding & Casting

Overview

This week I did a single‑part molding & casting run. I designed a hexagonal relief tile, machined a rigid master, poured a one‑piece silicone negative (no parting line), and cast the part in Rockite cement.

Process: CAD pattern → 3D CAM toolpaths → machine the master → one‑piece silicone pour → mix/vibrate (degas) Rockite → cure → demold → light sanding and cleanup. The gallery below shows the key steps from master to finished cast. Bonus: I also mixed and poured a small silicone mold for a set of architectural human figures and cast them in a low‑melt metal to test detail capture and venting.

Download project files (.zip)  ·  Browse files directory ↗

Gallery

CAD model of the positive with draft and parting lines
Group Assignment.
CAM setup with toolpaths for roughing and finishing
Concept.
Wax/foam master after CNC roughing
Concept.
Silicone negative poured over the master
Free composition.
Demolding the flexible mold
Pattern.
Casting material mixed and degassed, ready to pour
Prototype.
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Mold.
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Mold with rockite.
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Final Result.
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WIP.
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Metal casting.
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Failure.