Akabond 621 KG Knife-Grade Structural Epoxy – Sag-resistant, Two-Part, Slow Set
Akabond 621 KG Knife-Grade Structural Epoxy – Sag-resistant, Two-Part, Slow Set
Akabond 621 KG is a clear, knife-grade two-part structural epoxy for stone, and this item is the Part B hardener on its own, a 1 Quart container that cures a 1/2 gallon of Part A resin at 2:1 by volume.
Key Features
- Part B hardener only. It does nothing on its own; the Part A resin is a separate item and both halves are needed.
- Mixes 2:1 by volume, Part A to Part B - one quart of this hardener to a 1/2 gallon, or two quarts, of resin.
- KG in the name stands for knife grade, the high-viscosity sag-resistant formulation, and 621 is the model number.
- The mixed system is used for stone repair, crack filling, lamination, seaming, and bonding stone to other materials.
- Freeze-thaw durable and color-stable under UV exposure, and tintable with epoxy coloring paste.
- Akabond is a Wood & Stone product made by Axson and distributed under the Tenax callsign; it is not a Tenax-manufactured epoxy.
Who Is This For?
Shops already running Akabond 621 KG that get through hardener faster than resin, or that have resin left from a previous unit. Buying the halves separately is how a fabricator keeps the ratio matched to actual usage instead of throwing away part of a kit.
What This Is Not For
On its own this is not a usable adhesive - a customer who buys this expecting a working system gets a can that cannot bond anything. The resin half, Akabond 621 KG Part A, is the other item required. Knife grade is also the wrong viscosity for a job needing a self-levelling pour; a flowing adhesive such as the Superior Stone Products Water-Clear Polyester Stone Adhesive in the flowing grade is the right tool there.
Frequently Asked Questions
Is this a complete epoxy kit?
No. This item is the Part B hardener only. Akabond 621 KG is a two-part system and the Part A resin is a separate purchase.
How much resin does one quart of hardener cure?
Akabond 621 KG mixes 2:1 by volume, resin to hardener, so one quart of Part B goes with a 1/2 gallon - two quarts - of Part A.
Does KG mean the container weighs 621 kilograms?
No. KG stands for knife grade, a sag-resistant high-viscosity gel, and 621 is the model number. The name carries no weight figure at all.
Who manufactures Akabond 621 KG?
Akabond 621 KG is a Wood & Stone product made by Axson, distributed under the Tenax supplier code rather than manufactured by Tenax.