Epoxy Resin Casting Molds, Mixing Cups & Trowels

Epoxy Molds & Accessories: Precision Tools for Clean, Professional Resin Pours

Successful resin work depends on accurate mixing, clean containment, and the right release strategy. Eyeballing ratios and using improvised mixing containers introduces too many variables — soft spots, cloudy sections, and uncured patches are almost always the result of off-ratio mixing or incomplete blending. The accessories in this collection are purpose-built for epoxy work, not retrofitted from the kitchen drawer.

The MAS 32oz Mix Cup is marked with graduated volume measurements calibrated for the 2:1 ratio used in MAS epoxy systems — a simple but important detail that reduces measuring error. The MAS 4-Sided Trowel spreads and levels table top epoxy efficiently across flat surfaces, and its four different edge profiles handle spreading, scraping, and detail work in a single tool.

For casting turning blanks, Lizard Blanks Resin Casting Molds are made from durable, premium-grade plastic that won't degrade the way silicone and HDPE molds can, and their tool-free design makes de-molding fast. The Allway Paint Mixers attach to a standard drill and blend large volumes of pigmented resin quickly and thoroughly — hand-stirring large pours leads to unmixed streaks and color inconsistency.

Choosing an Epoxy Resin Casting Mold

Lizard Blanks mold	Size	Use it for
Over-sized pen blank	1" x 1" x 6"	Pen blanks and other small turnings
Handle	1-1/2" x 1-1/2" x 6"	Tool, knife and kitchen utensil handles
Bottle stopper	3" high x 2" x 2"	Vertical bottle stopper blanks, or suspending objects upright
Knife block	2" x 2" x 6"	Knife scales and blocks, or two standard bottle stopper blanks

Each mold has an extra 1/4" of height built in, so you can move a filled mold without spilling or fill it to the top for a slightly taller blank.

Resin Casting and Mold Release Tips

Use a deep-pour casting resin rated for the thickness of your blank. Thin-coat tabletop epoxy can overheat and crack in thick pours.
Follow the mold maker's instructions on mold release, and apply release evenly to every surface when it's called for.
Mix pigments completely before pouring. Our epoxy pigments include mica powders and sample packs.
Many turners cure castings in a pressure pot to shrink air bubbles for clearer blanks.
Let the casting cure fully before de-molding. A blank that is pulled too early can bend or dent.

Setting Up for a Successful Pour

Level your work surface before pouring — even a slight tilt causes a self-leveling table top to cure with a wedge profile
Pre-warm resin and hardener to 75°F to reduce viscosity and improve flow
Use graduated mixing cups for accurate ratios, never estimate by eye
Scrape the sides and bottom of the mix cup thoroughly during blending

Once your project is poured, head to our Epoxy & Resin collection for the resin systems, and add color with pigments from our Epoxy & Pigment collection. Finish the cured surface with Sanding & Abrasives before any topcoat.

Frequently Asked Questions

What type of mold should I use for epoxy casting projects?

Flexible silicone molds are the best choice for epoxy casting — they release cleanly, do not require a mold release agent, and can be reused many times. Lizard Blanks Resin Casting Molds are designed specifically for woodworking resin projects and produce clean, sharp castings. For custom shapes and large river table pours, melamine-coated particleboard molds are the standard shop-built solution.

Do I need special measuring cups for epoxy, or can I use any container?

You can technically use any container, but graduated mixing cups calibrated to your epoxy system's ratio significantly reduce measurement errors that lead to soft or uncured results. The MAS 32oz Mix Cup is marked specifically for MAS epoxy's 2:1 ratio, eliminating calculation and keeping your workflow accurate and repeatable.

What is a 4-sided trowel used for in epoxy work?

The MAS 4-Sided Trowel is a versatile spreading and finishing tool with four different edge profiles — flat, notched, round, and angled. In epoxy work, it is used to spread table top coatings evenly, scrape excess from surfaces, and work resin into recesses or voids in wood slabs. It replaces multiple single-purpose tools in one compact accessory.

Can I pour epoxy into any mold material?

No — epoxy bonds strongly to many surfaces. Silicone, polyethylene, and melamine-coated MDF release cleanly. Wood, cardboard, most plastics, and metal will bond permanently to the cured epoxy unless coated with a dedicated mold release agent. When building custom molds, use melamine board or line the form with packing tape, which epoxy does not adhere to.

How do I mix large volumes of pigmented epoxy without streaking?

For pours over a quart or so, hand-stirring is not fast enough to achieve truly uniform color before the pot life begins to tick down. The Allwy Paint Mixers on a variable-speed drill blend efficiently and without introducing excessive air. Mix at low speed, scrape the walls and bottom of the container, and always add pigment after the resin and hardener are already combined.

How do I keep the mold from leaking when casting a large pour?

Seal all seams and joints in your mold with silicone caulk and allow it to cure fully before pouring. A 2x4 clamped along the outside of the mold walls adds stiffness against the hydrostatic pressure of the resin. Level the mold carefully before pouring — resin seeks its own level and even a small tilt will result in an uneven surface. The epoxy resin itself should be at room temperature for optimal flow and self-leveling.

Can I reuse silicone resin molds?

Yes — quality silicone molds are reusable many times over. After demolding your casting, wash the mold with warm soapy water to remove any resin film before it fully cures, then allow to dry. Avoid cutting or abrading the mold interior, as small tears will telegraph into future castings as lines or marks. Store molds flat or in their original form to prevent distortion.

How do I prevent my mold from warping under the heat of curing epoxy?

Exothermic heat from large pours can warp lightweight mold materials. Use thick-walled mold stock (at least 3/4-inch melamine board), brace the exterior with structural supports, and consider dividing large pours into multiple thinner layers if using a table top formula. A deep pour epoxy generates significantly less heat per inch of depth and is the right choice for thick single pours.

What accessories do I need to start casting resin for woodturning blanks?

For turning blanks, you need a suitable casting mold (wood-stabilized blanks often use cylindrical silicone molds), graduated mixing cups, a mixing paddle or stirrer, pigments for color effects, and a casting epoxy rated for the depth of your blank. Start with the Lizard Blanks Resin Casting Molds, and add color from our Epoxy & Pigment collection.

Does Infinity Tools have everything I need for a complete river table epoxy project?

Yes — between our Epoxy & Resin collection (table top, deep pour, and penetrating formulas), our Epoxy & Pigment collection (mica powders and universal tints), and this molds and accessories collection (mixing cups, trowels, mixers), you have everything required for a complete river table build. For any questions, contact our team.

Epoxy Resin Casting Molds & Accessories