The strongest clear knife-grade epoxy for stone fabrication and lamination. Tenax StrongEdge 45 is a two-part transparent epoxy with true knife-grade consistency — engineered for 45° miter joints, vertical seams, and lamination where a flowing epoxy would run and a polyester would lack the structural strength required. Once cured, the bond is stronger than the stone itself: countertops will not delaminate or break at a StrongEdge 45 joint. Crystal-clear and non-shrinking, StrongEdge 45 polishes to a high-gloss finish and accepts color paste for precise stone matching. 45-minute set time at 75°F. 2:1 mix ratio. VOC compliant. Suitable for granite, marble, quartz, engineered stone, ceramic, and porcelain. Key Features Strongest clear knife-grade epoxy for stone fabrication and lamination True knife-grade consistency — no running or dripping on 45° miters or vertical seams Crystal-clear, non-shrinking formula Polishes to a high-gloss finish; accepts color paste for stone matching Bond strength exceeds the stone — no delamination at the joint 45-minute set time at 75°F; 2:1 mix ratio VOC compliant; indoor and outdoor use StrongEdge 45 vs. StrongEdge Express — Which to Choose StrongEdge 45 (this product) — knife-grade consistency; use for 45° miters, vertical seams, and applications where the adhesive must stay in place without running; 45-minute set time StrongEdge Express — flowing consistency; use for lamination, flat seams, and applications where the adhesive needs to self-level; 40-minute set time Compatible Materials Granite, marble, quartzite, travertine Engineered quartz and engineered stone Ceramic and porcelain All natural stone surfaces How to Use Ensure the surface is clean, dry, and free of dust and oils If color matching, add Universal Color Paste to Part A before combining with Part B Mix Parts A and B at a 2:1 ratio; stir vigorously with clean tools until fully blended Apply immediately — do not return mixed adhesive to the original container Allow to fully cure (approx. 45 minutes at 75°F), then grind flush and polish to match surrounding stone Clean tools with acetone or butyl acetate before adhesive cures Seal containers tightly after use; store between 65°F–77°F; minimum 1-year shelf life Works Well With StrongEdge Express Flowing Epoxy — flowing version for lamination and flat seams 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 Tenax T Tape Miter Tape — for masking and holding miter joints during cure Tenax Tixo Xe Knife Grade Polyester — polyester alternative for interior repairs and seams 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.
