--- product_id: 520586834 title: "White Glass Microspheres - Filler for Epoxy and Polyester Resin - Quart Tub" brand: "fasco epoxies" price: "€ 63.82" currency: EUR in_stock: true reviews_count: 5 category: "Fasco Epoxies" url: https://www.desertcart.hr/products/520586834-white-glass-microspheres-filler-for-epoxy-and-polyester-resin-quart store_origin: HR region: Croatia --- # Engineered hollow glass microspheres Improves weight-to-strength ratio Easy sanding for smooth finishes White Glass Microspheres - Filler for Epoxy and Polyester Resin - Quart Tub **Brand:** fasco epoxies **Price:** € 63.82 **Availability:** ✅ In Stock ## Summary > ⚡ Elevate your resin game with featherlight strength and flawless finish! ## Quick Answers - **What is this?** White Glass Microspheres - Filler for Epoxy and Polyester Resin - Quart Tub by fasco epoxies - **How much does it cost?** € 63.82 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/520586834-white-glass-microspheres-filler-for-epoxy-and-polyester-resin-quart) ## Best For - fasco epoxies enthusiasts ## Why This Product - Trusted fasco epoxies brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Pure White Finish:** Adds a clean, bright tone to your resin projects for a premium look - • **Effortless Sanding:** Achieve flawless, smooth surfaces with minimal effort - • **Versatile Putty Base:** Mix with cabosil for a professional-grade general purpose filler - • **Dimensional Stability:** Maintain shape integrity under stress and time - • **Lightweight Reinforcement:** Boost epoxy and polyester strength without the bulk ## Overview Fasco Epoxies White Glass Microspheres are engineered hollow glass bubbles designed to enhance epoxy and polyester resins by improving weight-to-strength ratio and dimensional stability. This lightweight filler sands easily and can be combined with cabosil to create a versatile, high-performance putty, making it ideal for professional-grade repairs and refinishing projects. ## Description Micro cellular hollow fiberglass particles for adding to resin as a filler reinforcement for easy to sand lightweight filling. White in color. Sometimes called Glass Bubbles or Glass Microspheres. Review: Be sure to wear a dust mask around using this stuff. It quickly aerosols when scooping it out, but not overly so, like a powder that seems to evaporate into the air vs staying on the spoon. One can scoop it out without issue. As to mixing it with resin I had varying results. The goal was to reduce how brittle epoxy resin is. I think it achieved this, with one or two plastic spoons worth in measure. This would also depend on how much resin its being put into. Stir until it has a kind of foamy creamy texturing, having premixed the resin beforehand. In cold casting into a silicon mold, I noticed that it tended to sink to the very bottom and create some small air pockets in the final casting. Using less of this powder reduced the issue but also left the resin more brittle. Using a lot of this powder may lead to a semi flexible casting. Elsewise I guess it works as intended. It also adds a white color to the mixture. I didn't experience a dust cloud when opening the initial foil seal, or afterwards. Just use care to open the lid slowly, and maybe wear some eye protection. Review: Easy to use micro balloons to act as filler for windsurf board repair. Mixes well with epoxy. ## Features - Sands Easy Added to epoxy or polyester to make a lightweight fairing compound - Also Called Glass Bubbles - Microspheres Improves the Weight to Strength Ratio Improves Dimensional Stability - When added with our cabosil (equal parts by volume) it makes a great general purpose putty - engineered hollow glass microspheres ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07KPL163Y | | Brand Name | Fasco Epoxies | | Color | White | | Compatible Material | Fiberglass | | Container Type | Pail | | Customer Reviews | 4.8 4.8 out of 5 stars (324) | | Item Form | Liquid, Paste | | Item Package Quantity | 1 | | Item Weight | 1 Pounds | | Manufacturer | Fasco Epoxies | | Material Type | Glass | | Model | FIL02Q | | Other Special Features of the Product | Improves weight to strength ratio and improves shape retention | | Specific Uses For Product | Epoxy and Polyester Resin | | UPC | 819794020770 | | Unit Count | 32 Fluid Ounces | | Viscosity | laag | | Volume | 946.35 Milliliters | | Water Resistance Level | Not Water Resistant | ## Product Details - **Brand:** Fasco Epoxies - **Item form:** Liquid, Paste - **Material:** Glass - **Special features:** Improves weight to strength ratio and improves shape retention - **Specific uses for product:** Epoxy and Polyester Resin ## Images ![White Glass Microspheres - Filler for Epoxy and Polyester Resin - Quart Tub - Image 1](https://m.media-amazon.com/images/I/712adJW0+yL.jpg) ## Questions & Answers **Q: Do microballoons dry clear?** A: In my experience, clarity depends on the amount of microballoon powder added. I am using with finishing epoxy, which normally dries clear. To get the consistency I need, there is a slight whitish haze to the dried result. **Q: volume or mass ?. In planet earth we use to have measurements "Quart Tub" really?** A: Volume. Canister was full. Material very light. Worked well with Poly resin for faring. **Q: would this work to fix a snapped surfboard?** A: It doesn’t have any repair properties, it just adds volume to your epoxy **Q: Is this hydrophobic fumed silica?** A: This is not fumed silica, but this also is not a hydrophobic filler. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Review *by A***M on 21 August 2023* Be sure to wear a dust mask around using this stuff. It quickly aerosols when scooping it out, but not overly so, like a powder that seems to evaporate into the air vs staying on the spoon. One can scoop it out without issue. As to mixing it with resin I had varying results. The goal was to reduce how brittle epoxy resin is. I think it achieved this, with one or two plastic spoons worth in measure. This would also depend on how much resin its being put into. Stir until it has a kind of foamy creamy texturing, having premixed the resin beforehand. In cold casting into a silicon mold, I noticed that it tended to sink to the very bottom and create some small air pockets in the final casting. Using less of this powder reduced the issue but also left the resin more brittle. Using a lot of this powder may lead to a semi flexible casting. Elsewise I guess it works as intended. It also adds a white color to the mixture. I didn't experience a dust cloud when opening the initial foil seal, or afterwards. Just use care to open the lid slowly, and maybe wear some eye protection. ### ⭐⭐⭐⭐⭐ Review *by E***S on 21 July 2025* Easy to use micro balloons to act as filler for windsurf board repair. Mixes well with epoxy. ### ⭐⭐⭐⭐⭐ Review *by K***. on 2 October 2025* Absolutely the Best! ## Frequently Bought Together - Fasco Epoxies White Glass Microspheres - Filler for Epoxy and Polyester Resin - Quart Tub - Fasco Epoxies - Fasco Cab-O-SIL Fumed Silica thickener in Quart tub - TotalBoat 5:1 Marine Epoxy Resin Kit for Bonding, Filleting, Coating, and Laminating - Use for Fiberglass, Wood, Carbon Fiber, Boat Building, Repairs, Woodworking (Gallon, Slow Hardener, Pumps) --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.hr/products/520586834-white-glass-microspheres-filler-for-epoxy-and-polyester-resin-quart](https://www.desertcart.hr/products/520586834-white-glass-microspheres-filler-for-epoxy-and-polyester-resin-quart) --- *Product available on Desertcart Croatia* *Store origin: HR* *Last updated: 2026-04-27*