GROWLING Extra Large Epoxy Resin Mold 72x36x3 in - Heavy Duty Reusable

In this review of the GROWLING Extra Large Epoxy Resin Mold, the bottom line is simple: this mold is aimed at makers who need a durable, repeatable form for large resin projects and want less post-finishing work. The mold's 4/5 in thick UPE panels and CNC-assembled structure make it a practical choice for frequent resin use, and the built-in leveling and fastening features address two of the biggest headaches when casting river tables or large slabs. It is best for experienced hobbyists and small studios that pour large volumes and value repeatability.

Key Features

• Heavy-duty UPE construction: The 4/5 in thick panels resist heat and pressure during curing so the form holds its shape for consistent large pours.
• CNC precision fit: Panels are cut and drilled with CNC equipment and bolted together to produce vertical inner walls that reduce seam lines and save finishing time.
• Leveling and fastening system: Two level positions, six adjustable feet, and pressure bars let users monitor level in real time and secure wood blanks without extra tools.
• Easy demolding: HDPE material has self-lubricating properties so cured resin releases more easily, often by tapping with a rubber mallet or removing the short sides.
• Adjustable divider sizes: Included 72x3.15 in and 36x3.15 in dividers allow the mold to be reconfigured into multiple sizes for different projects.
• Pre-assembled shipping and support: The mold body ships pre-assembled to reduce setup, and a California support center handles after-sales inquiries.

Who It's For

This mold suits woodworkers, resin artists, and small furniture makers who regularly cast large pieces like river tables, coffee tables, trays, and cutting boards and need a reusable, stable form. The heavy UPE panels and CNC assembly benefit those who want vertical inner walls and fewer weld marks to minimize sanding and waste.

Those who only do small occasional pours or prefer flexible silicone molds for highly detailed, small runs should look elsewhere; the size, weight, and requirement to seal seams before pouring make this mold better suited to regular large-format work and studio environments.

Pros & Cons

Pros

• Sturdy, heat-resistant panels that resist deformation during large pours.
• Adjustable feet and pressure bars make leveling and securing blanks straightforward.
• Pre-assembled CNC fit reduces post-assembly errors and produces cleaner inner walls.
• Reusability and easy demolding lower long-term project costs.

Cons

• Requires silicone seam sealing before each pour, adding a step to setup.
• Large size and weight make it less convenient for casual or single-use crafters.

Specifications

Brand	GROWLING
Material	4/5 in thick UPE (HDPE-like) panels
Overall size	72 x 36 x 3 in (panel set)
Included dividers	72 x 3.15 in and 36 x 3.15 in divider pieces
Fastening	Stainless steel bolts, threaded inserts, pressure bars, clamping blocks
Leveling	2 level positions with 6 adjustable feet
Shipping	Pre-assembled mold body with after-sales support in California

Our Verdict

For makers who pour large epoxy slabs regularly, this mold offers a durable, well-engineered solution that reduces finishing work and improves repeatability. The combination of thick UPE panels, CNC precision, and the leveling/fastening system makes it good value for studios and serious hobbyists willing to handle the extra seam-sealing step before each pour.

Frequently Asked Questions

Does the mold need sealing before use?
Yes, silicone sealing of the seams is required before pouring to ensure a watertight form.

How is the mold removed after curing?
The HDPE-like panels are self-lubricating, so most casts release by tapping with a rubber mallet or removing the short sides to disassemble.

Can the divider positions be adjusted?
Yes, the included dividers allow the mold to be reconfigured into multiple sizes to suit different project dimensions.