Will this strengthen the partially rotted tops of 4 x 4 red wood deck posts, fill the rot cavity, and firmly hold screws?

I have used this product and Minwax wood hardener. Minwax is the better product. It penetrates deeper and strengthen the wood. I wood follow up with an exterior grade wood filler to fill any rotted out voids then carry on with your fasteners.

I am a fan. However there is no way it can be sprayed on. it's very thick and i can't comprehend it being in a spray bottle. Think honey or syrup. As a handyman profesional I love this. I just did 3 days doing roof trim repair that had rot and carpenter ant damage. The fibers are loose like straw. this firmed them up enough for me to put in wood epoxy.

Chemically, what is this stuff?

http://www.jb-weld.co.uk/images/technical-data-sheets/J-B-Weld-MSDS-Wood-Restore-Epoxy1.pdf

Can this be used outdoors?

yes it can. I used it on exterior window trim.

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🔧 Bond Beyond Limits with J-B Weld!

INNOVATIVE FORMULA - Clear to amber transition for seamless results!
QUICK AND EASY USE - No batteries needed—just mix and apply!
VERSATILE APPLICATIONS - Perfect for home repairs, crafts, and more!
UNLEASH YOUR CREATIVITY - Transform your projects with a reliable bond!
DURABLE AND LONG LASTING - Crafted for strength, built to last!

J-B Weld Liquid Hardener is a versatile bonding adhesive designed for a variety of applications. With a 1 pt capacity and a unique clear to amber color transition, this hardener is perfect for both professional and DIY projects. Weighing in at 453.59 g and measuring 5.08 x 10.16 x 17.78 cm, it’s easy to store and use. No batteries are required, making it a hassle-free solution for your bonding needs.

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$124.13

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TrustScore 4.5 | 7,300+ reviews

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Excellent communication throughout the order process. Product is perfect.

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The product quality is outstanding. Exactly what I needed for my work.

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Product Dimensions	5.08 x 10.16 x 17.78 cm; 453.59 g
Item model number	40001
Batteries Required?	No
Material Type(s)	Amber
Color	red
Release date	15 September 2023
ASIN	B005493J1E

J-B Weld Liquid Hardener, 1 pt, Clear to Amber, Can

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