Why Does My Resin Vase Have Sticky Spots?

Sticky or soft patches on your resin vase can be disappointing, especially after careful preparation. Understanding the reasons behind this common issue helps ensure your future resin vase projects turn out perfectly clear and fully cured.

What Causes Sticky Spots in Resin Vases?

The most frequent cause of sticky or tacky spots in resin vases is incorrect measuring or mixing of the resin and hardener. Epoxy resins depend on precise ratios—any deviation can prevent a proper chemical reaction, leaving uncured areas. Inadequate or rushed mixing can also result in unmixed portions that remain sticky after curing, usually found as shiny patches or along edges.

Use accurate digital scales to measure by weight, as volume can be misleading.
Mix slowly and scrape the sides and bottom of your mixing vessel to ensure a uniform mixture.

How to Prevent Tacky Areas on Your Resin Projects

Start by selecting a resin compatible with your vase project. For clear vases under 2cm thick, a multipurpose resin like “Trasparente” offers consistent clarity and flow. If you’re using a kit, such as the Flower Vase Resin Art Kit, follow the included instructions for mixing time and ratios specific to that product. Take your time with the mixing process, ideally stirring for several minutes until it’s fully combined.

When This Matters Most

Attention to measuring and mixing is especially crucial for display pieces or functional vases that hold water, as incomplete curing may soften further over time or affect the finish. Rectifying stickiness after demoulding can be challenging, often requiring careful removal or a fresh resin coating.

Related guides

How To Make Clear Resin Vases

By paying close attention to measurements and mixing technique, you’ll avoid sticky spots and achieve a smooth, professional result for your next resin vase. Discover more helpful tips and creative projects in our full Resin Vase Guide.