Description
High-viscosity transparent polyester for vertical repairs and seams. Tenax H-Knife is a transparent knife-grade polyester adhesive engineered for vertical and horizontal stone repairs, bonding, rebuilding, and filling — where a flowing polyester would sag and a colored mastic would show through light or translucent stone. The transparent base stays visually clear on white, light-veined, and translucent stone, and colors easily with Tenax color pastes for precise matching on any tone.
Fast curing with a glossy, polishable finish. Extremely strong bond. Interior use only; not suitable for temperatures below 32°F. 12-month shelf life.
Key Features
- Transparent base — ideal for white, light-veined, and translucent stone
- High-viscosity knife-grade consistency — holds on vertical surfaces without sagging
- Fast curing with a glossy, polishable finish
- Extremely strong bond
- Colors easily with Tenax color pastes for precise stone matching
- Interior use only
H-Knife vs. Tixo Xe — Which to Choose
- H-Knife (this product) — available in quart, gallon, and 5-gallon sizes; preferred for high-volume shops needing transparent knife-grade in larger quantities
- Tixo Xe — also transparent knife-grade; available in quart, gallon, and 5-gallon; 50+ year proven formula; choose based on your preferred working characteristics
Compatible Materials
- Granite, marble, quartzite, travertine, limestone, and all natural stone
- Engineered quartz and engineered stone
How to Use
- Ensure surfaces are dry, clean, and free of dust and debris
- If color matching, add color paste to the resin before introducing the catalyst
- Mix resin and catalyst per the technical data sheet; stir thoroughly
- Apply immediately — do not return mixed adhesive to the original container
- Allow to fully cure, then grind flush and polish to match surrounding stone
- Seal container tightly after use; store between 65°F–77°F; 12-month shelf life
Works Well With
- Tixo Xe Transparent Knife Grade — alternative transparent knife-grade polyester
- Tenax Hardener 45ml — catalyst for small batch mixing
- Tenax Hardener 180ml — catalyst for regular shop use
- Universal Color Paste — for color matching the adhesive to the stone
- Tenax Mixing Cups 12oz — disposable cups for measuring and mixing
- Tenax #9 Razor Blade — for trimming cured adhesive flush before polishing
Further Reading
Knife Grade vs. Flowing Polyester — Which Do You Need? → — when to use each type and how to choose the right Tenax formula for every job.
ProToolHaus – Your Certified Tenax USA Distributor
When you buy from ProToolHaus, you're ordering from a certified distributor of Tenax USA. We carry the full lineup and stand behind every product with expert guidance, fast fulfillment, and the kind of support that only comes from working in the stone industry every day.