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JB Weld

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General Overview

"Our flagship product, J-B WELD is the world's finest cold-weld compound. It's a remarkably easy, convenient, and inexpensive alternative to welding, soldering, and brazing. J-B WELD is the smart way to repair something ... and for literally pennies per use. When welding or soldering is out of the question due to cost, down time for repairs, or technical/environmental considerations, J-B WELD is the answer."

Tips, Tricks & How-Tos

    • J-B WELD consists of two parts. Squeeze equal parts from each tube onto any clean disposable surface. Mix together thoroughly. A wooden dowel or paddle is a good mixing tool.
    • Surface for application must be clean, dry, and free of dirt, grease, oil, etc. Remove any paint, primer, rust, etc. before applying J-B WELD. For the best weld, roughen surfaces to be welded with fine or course sandpaper.
    • Apply with putty knife, spoon, wooden paddle, or other suitable tool. Avoid contact with skin and eyes. May be applied in an even coat, weld bead, or extruded shape as needed.
    • Allow 4-6 hours for drying before handling. Allow to dry overnight (approximately 15 hours) before putting object to use. J-B WELD works faster if used in a room with a temperature above 50deg F. After J-B WELD has cured for six hours, a heat lamp or light bulb placed near the weld will speed drying time. After it has cured completely, JB Weld is light gray and slightly shiny. It can be sanded and painted.

Not Recommended

Not recommended for use on manifolds, exhaust systems, and other engine components which normally operate at temperatures above 500° F.

Safety Information

Note: All safety information contained here within is pure recommendation, and its sole purpose is to help students work safer. This should in no way be considered a professional statement or a replacement for reading product information. Please read all instructions included with products before use.

Nothing in particular. Does not create a fine dust.


External Links

NOTE: All information contained within this article is pure opinion. Although this article is intended to help students, it may contain faulty or misleading information. This article is not to be considered professional opinion or advice, and is in no way a replacement for reading all safety/instructional documentation. Always remember to protect yourself when handling/using hazardous materials, as well as test new techniques before using them on projects/work intended to be handed in or used.

RISDpedia and its contributers take NO responsibility for the information contained within.

RISDpedia is not an official site of the Rhode Island School of Design.

JB Weld
Image of back: Here
Manufacturer: J-B Weld
Category: Epoxy