--- product_id: 404835055 title: "White Glass Microspheres - Filler for Epoxy and Polyester Resin - Quart Tub" brand: "fasco epoxies" price: "¥11088" currency: JPY in_stock: true reviews_count: 5 category: "Fasco Epoxies" url: https://www.desertcart.jp/products/404835055-white-glass-microspheres-filler-for-epoxy-and-polyester-resin-quart store_origin: JP region: Japan --- # Engineered hollow glass microspheres for strength Lightweight filler, reduces epoxy brittleness Easy to sand for smooth finishes White Glass Microspheres - Filler for Epoxy and Polyester Resin - Quart Tub **Brand:** fasco epoxies **Price:** ¥11088 **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?** ¥11088 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/404835055-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 - • **Smooth Operator:** Sands effortlessly for flawless surface prep - • **Versatile Mixing Magic:** Pairs perfectly with cabosil for a durable putty - • **Pro-Grade Microballoons:** Engineered hollow glass spheres for superior reinforcement - • **Featherlight Strength Boost:** Enhances weight-to-strength ratio without bulk - • **Dimensional Stability Master:** Prevents warping and shrinkage in cured resin ## Overview White Glass Microspheres are microcellular hollow glass particles designed as a lightweight filler for epoxy and polyester resins. They improve the weight-to-strength ratio and dimensional stability of resin mixtures, sand easily for smooth finishes, and when combined with cabosil, create a versatile, durable putty. Ideal for professional repairs and high-performance composites, these engineered microspheres deliver enhanced strength without added weight. ## 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 | Fasco Epoxies | | Colour | White | | Compatible Material | Fibreglass, Glass | | Container Type | Pail | | Customer Reviews | 4.8 4.8 out of 5 stars (327) | | Item Form | Liquid | | Item Package Quantity | 1 | | Item Volume | 946.35 Millilitres | | Item Weight | 454 g | | Manufacturer | Fasco Epoxies Inc. | | Manufacturer Part Number | FIL02Q | | Material | Glass | | Model Number | FIL02Q | | Other Special Features of the Product | Microcellular hollow glass microspheres for improved weight-to-strength ratio and dimensional stability | | Specific Uses For Product | Epoxy Resin, Polyester Resin | | UPC | 819794020770 | | Unit Count | 946 millilitre | | Viscosity Level | Low | | Water Resistance Level | Not Water Resistant | ## Product Details - **Brand:** Fasco Epoxies - **Item form:** Liquid - **Material:** Glass - **Specific uses for product:** Epoxy Resin, 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) ![White Glass Microspheres - Filler for Epoxy and Polyester Resin - Quart Tub - Image 2](https://m.media-amazon.com/images/I/71yC+9Ak6GL.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 G***D on 20 August 2025* great product, good replacement for the SIG micro ballons I have used in the past on my models ## 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.jp/products/404835055-white-glass-microspheres-filler-for-epoxy-and-polyester-resin-quart](https://www.desertcart.jp/products/404835055-white-glass-microspheres-filler-for-epoxy-and-polyester-resin-quart) --- *Product available on Desertcart Japan* *Store origin: JP* *Last updated: 2026-05-15*