We were brought on by CAMAD to produce resin prototype bottles for Coca-Cola as part of a marketing campaign. The goal was to create high-quality display pieces that looked and felt like premium glass bottles.
Starting with a 3D model provided by CAMAD, we printed the prototype using PLA on our Prusa MK3. The raw print was then cleaned up using a mix of Bondo spot putty and high-build filler primer to remove visible layer lines. Through a combination of wet and dry sanding, we worked our way up to a smooth, near-gloss finish.
For molding, we chose Mold Max 30 from Smooth-On—a reliable tin-cure silicone ideal for this type of prototype. Once cured, the mold was used to cast the bottles in Smooth-Cast 327, a clear resin that handles dyes well and cures bubble-free under pressure. Each casting was done in two pours: a clear top layer followed by a tinted base to achieve the right look.
After curing, each bottle was wet sanded from 150 up to 2000 grit, then polished using the NOVUS polishing system, giving us a smooth, glass-like finish.
These bottles feel solid and premium in hand, and with the addition of lighting or branding, they make for standout display pieces—perfect for retail setups or brand activations.
