Large Reusable Epoxy Mold Set 19.6x11.8x3 and 15.8x9.8x3 in - Durable

In this review of the Large Reusable Epoxy Mold set the reviewer finds a practical solution for makers who want consistent, sturdy forms for large resin pieces. The package includes two rectangular molds sized 19.6 x 11.8 x 3 in and 15.8 x 9.8 x 3 in plus a rubber mallet, which makes it clear the product is aimed at crafters building river tables, coffee tables, cutting boards and art panels. The single biggest reason to buy is the reinforced, non-silicone construction that promises repeated use without edge deformation, saving time and sealant steps compared with flexible silicone alternatives.

Key Features

• Two sizes included: The set contains two large molds (19.6 x 11.8 x 3 in and 15.8 x 9.8 x 3 in) to cover multiple project scales and layouts.
• Sturdy construction: Made from a reinforced non-silicone material with no welds, the molds hold shape across multiple resin pours and reduce worry about leaking or warping.
• No additional sealing required: Because edges are thickened and there are no gaps, users do not need to coat seams with silicone before casting, saving prep time.
• Easy demolding: Smooth interior surfaces and a 2 degree outward tilt on the sides promote straightforward release of cured resin pieces for cleaner edges.
• Versatile use cases: The large cavity sizes are suitable for river tables, coffee tables, charcuterie boards, cutting boards and flat art panels for home or studio projects.
• Includes a rubber mallet: A mallet is provided to help with gentle tapping for demolding without damaging finished pieces.

Who It's For

This mold set is ideal for hobbyists and small workshop makers who regularly cast medium to large resin slabs and need rigid, reusable forms for consistent results. It suits crafters making cutting boards, charcuterie boards and decorative river-style tables who prefer a hard-form mold that does not require silicone sealing.

Beginners will appreciate the ready-to-use nature, though users expecting flexible silicone behavior should look elsewhere; this product is not silicone and will not flex for highly intricate undercuts. Those needing custom shapes or very deep pours should evaluate mold size and material suitability before purchase.

Pros & Cons

Pros

• Durable, reinforced edges reduce deformation over repeated uses.
• Smooth interior and slight outward taper make demolding easier and cleaner.
• Two sizes offer flexibility for different project types without buying multiple molds.
• Includes a rubber mallet to assist with safe release of finished pieces.

Cons

• Sturdy non-silicone construction means the mold is rigid and will not flex for complex shapes.
• Some customers report mixed impressions on long-term durability, so heavy commercial use may require monitoring.

Specifications

Brand	ZYBINIUB
Included sizes	19.6 x 11.8 x 3 in and 15.8 x 9.8 x 3 in
Material type	Sturdy non-silicone construction
Edge treatment	Reinforced, thickened edges with no welds
Interior finish	Smooth surface with 2 degree outward tilt
Accessories	One rubber mallet included

Our Verdict

For hobbyists and small studio makers who need reliable, reusable rectangular forms for resin river tables, coffee tables or boards, this mold set is a practical and time-saving choice. The reinforced non-silicone construction and included mallet make setup and demolding straightforward, offering good value for repeated casting sessions when rigid molds are preferred.

Frequently Asked Questions

Are the molds flexible?
The molds are made from a sturdy non-silicone material and are rigid rather than flexible.

Do I need to seal the seams with silicone?
No, the product is designed with reinforced, thickened edges and no welds so additional silicone sealing is not required.

What sizes are included?
The set includes two rectangular molds: 19.6 x 11.8 x 3 in and 15.8 x 9.8 x 3 in, plus a rubber mallet.