Silicone molds open countless possibilities for acrylic resin projects, from preserving dried flowers to creating custom coasters and decorative keepsakes. This guide highlights five top-shelf options that balance flexibility, durability, and ease of use. Each product below is chosen for its relevance to acrylic resin crafting, practical size options, and reliable demolding. Read on to compare shapes, capacities, and versatility to find the right molds for your next DIY project.
Summary Table of Chosen Products
| Product | Brand | Primary Use |
|---|---|---|
| YOILES 3PCS Resin Molds Silicone | YOILES | Flower preservation and bookends; multiple shapes |
| RESINWORLD 6-Cavity Deep Round Coaster Molds | ResinWorld | Deep coasters; geode and bouquet preservation |
| LEOBRO Silicone Mat for Resin Molds | LEOBRO | Work surface protection and accessory prep for resin work |
| Square Silicone Molds for Resin Casting (Actvty) | Actvty | Large square resin pieces; flowers, insects, keepsakes |
| LET’S RESIN Rectangle Silicone Resin Molds | LET’S RESIN | Rectangular keepsakes and flower/insect preservation |
YOILES 3Pcs Resin Molds Silicone Overview

YOILES offers a 3-piece silicone resin mold set in square, heart, and hexagon shapes, plus three smaller molds in varied sizes. This kit is suitable for epoxy resin and flower preservation, with reference dosages indicating resin needs per shape. The larger hexagon, heart, and square molds support broader project options, while the smaller molds fit intricate keepsakes. Note that epoxy and flowers are not included, so you’ll need separate materials to complete projects. Demolding is typically smooth due to silicone flexibility.
RESINWORLD 6-Cavity Deep Round Coaster Molds

This six-cavity set focuses on deep round coasters with a 3.93-inch diameter and 0.82-inch depth. Made from shiny silicone, these molds deliver a mirror-like finish on cured pieces. They’re flexible, easy to demold, and reusable, making them ideal for resin geodes, flower bouquet preservation, and small trinket trays. The deep profiles allow for multi-layer pours, helping capture embedded objects and color shifts for striking coaster keepsakes or decorative pieces.
LEOBRO Silicone Mat For Resin Molds

LEOBRO’s two-piece silicone mat set measures 15.7 by 11.7 inches, offering ample workspace to protect desks from resin spills and heat. The mats are non-stick, non-skid, and heat-resistant, helping with resin curing and tool cleanup. Their soft, flexible silicone is suitable for epoxies, glues, paints, and clays, serving as reliable work surfaces for resin molds and related projects. Available in blue and rose red, these mats are practical for hobbyists who frequently work with resin tools and materials.
Square Silicone Molds for Resin Casting (Actvty)

Actvty provides three large square resin molds with dimensions up to 9.6 by 6.6 inches and depths around 1.9 inches. Each mold is designed for thick, solid resin blocks suitable for embedded objects like flowers or photos. The kit emphasizes layering for large pours and notes the need for approximately 40 ounces, 7 ounces, and 5 ounces of resin per mold. The molds are reusable and require care to avoid heat damage from torches, making them a solid option for larger centerpiece pieces or display tiles.
LET’S RESIN Rectangle Silicone Resin Molds

LET’S RESIN offers three large rectangular silicone molds with a wooden stand. Mold sizes include 7.6 x 5.2 x 2 inches, 7.2 x 3.2 x 2.4 inches, and 6 x 2 x 2 inches. These molds are rated for resin usage around 46 oz, 33 oz, and 14 oz, helping crafters manage resin consumption precisely. The wooden stand helps maintain mold shape, reducing deformation for consistent presentation. They are suitable for preserving dried flowers, insect specimens, and creating decorative pieces for holidays or gifts.
Buying Guide
Key considerations
- Size and depth: Choose molds with depths appropriate for your project—deep molds suit coasters and blocks, while larger rectangles work for display pieces.
- Material quality: High-quality silicone offers better flexibility, easier demolding, and longer life. Check for non-stick, heat resistance, and durability.
- Demolding and finish: Some molds yield a mirror-like finish or require finishing touches. Consider whether you want a glossy surface or a more matte look after curing.
- Project compatibility: If preserving flowers, verify resin guidelines for per-mold resin volumes and layering techniques to prevent overheating.
- Workspace and accessories: A silicone mat (as from LEOBRO) helps protect surfaces, while a wooden stand (as with LET’S RESIN) can help maintain mold shape during use.
- Maintenance: Reusable molds require gentle cleaning. Avoid sharp tools that can cut silicone; temperature control helps prevent warping.
Comparative considerations
- Coaster-centric sets (ResinWorld) excel for small functional pieces and gift-ready crafts, often with deep pours and reflective finishes.
- Flower preservation and keepsakes (Yoiles, Actvty, LET’S RESIN) emphasize embedding petals or photos, offering visual depth and sentimental value.
- Work surface tools (LEOBRO mats) reduce cleanup time and protect workspaces, a practical companion to all resin activities.
- Shape variety (square, rectangle, round, heart) allows for themed projects or coordinated gift sets.