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Sealing your formwork is an essential first step for a successful epoxy resin table project. A properly sealed mould will contain the resin and prevent unwanted leaks or seepage beneath your wooden slab, giving you cleaner results and less mess to tidy up later.
Choosing Your Sealing Materials
Effective sealing of formwork can be achieved using silicone or release tape, both of which help stop resin from escaping. Silicone sealant is a popular option for joining the inner corners and edges of your base and sides, creating a continuous barrier. If you’re using a material like MDF for your base, consider applying a special release film or release tape over the board’s surface to aid both sealing and eventual demoulding.
- Ensure the form is dry and free from dust before applying any sealant.
- Opt for neutral cure silicone for the best compatibility with epoxy resins.
Step-by-Step Sealing Process
Begin by assembling your formwork securely—this may include side walls and a base, such as an MDF Board Base. Run a bead of silicone sealant along every internal seam and gently smooth it with a finger or spatula for an even finish. Allow the silicone to fully cure before introducing any resin.
- Cover flat surfaces with release tape or film for easier demoulding.
- Double-check all corners and joints to ensure there are no gaps.
- After curing, do a water test before pouring resin to check for missed leaks.
When This Matters: Preventing Resin Leaks and Clean Up
Properly sealing your formwork matters most when working with fluid resins and deep pours. Even small gaps can quickly lead to expensive spills and wasted materials. Taking extra care at this stage not only protects your workspace but also makes unmoulding the finished table much simpler.
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Sealing your formwork is a straightforward but essential step for a flawless epoxy resin pour. With the right approach and materials, you’ll set a strong foundation for building your own unique wood and resin table. For additional project tips and product recommendations, see our main guide on how to build a wood and epoxy resin table.