Black Medium-Thick Super Glue
Black Medium-Thick Super Glue
Starbond® "Knot-filler" Black Medium-Thick is the go-to black CA glue for those with knot problems in their wood. Known for flawless knot and void fills, this rubber-toughened formula flows thick (500–600 cps), stays put, and cures to a deep jet-black finish that elevates every piece.
It’s not just a filler—it bonds with impact-resistant strength across wood, rubber, metal, glass, and more. Whether you’re sealing a knot or securing a component, it delivers clean, controlled application with a flexible, crack-proof hold.
• Signature black fills for knots, voids, and high-contrast inlays
• Flexible, high-strength bonds that resist shock and vibration
• Ideal for woodworking, speaker repair, R/C tires, and thread locking
Need speed? Pair with Starbond® Accelerator for an instant cure.
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Customer Reviews
Been using it for years and it’s a life saver
Thick, great for filling voids and cracks, in between intarsia pieces. Being black it just not noticeable!
Works wonderfully on every product commissioned!
I was introduced to Starbond by a fellow woodworker @retiredwithwood and I couldn't be happier. This is a game changer for my shop when it comes to keeping projects moving and on time. Small imperfections can be quickly and easily fixed allowing me to finish custom projects faster while maintaining quality.
This Starbond CA is great! Mends, fills, sands and polishes up nicely!
Repair is invisible under almost any possible light source. Tough, attractive results. Just be sure to work in gradual layers to avoid any fogging and micro-voids.
I'm using the Medium-Thick black CA glue to fill small crack or holes in hardwood that can occur in highly figured areas.
Also to fill holes, cracks or voids in burl wood before I turn it for pens.
Clear CA would not be appropriate for these purposes.
Love the black glue worked great on the spalted maple table
I use Starbond Black for all of my woodworking filler needs. I even fill very large voids with it and it matches black epoxy finishes for small touch up items. I also use the clear for temporarily joining parts for knife making. The only CA glue I use.
