Too much or too little hardener will affect the cure time and thoroughness of the cure. A. Remove the uncured epoxy. Do not apply additional material over non-curing epoxy. See Clean Up & Removing. B. Check that you’re using the correct number of pump strokes: Use equal strokes of epoxy resin and hardener.
Full Answer
Is J-B Weld toxic?
No. When fully cured, J-B Weld is non-toxic. However, we do not recommend consuming the product.
Why choose J-B Weld?
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. Purpose of product.
What is the maximum temperature J-B Weld can withstand?
Original J-B Weld can withstand a constant temperature of 500º F. The maximum temperature threshold is approximately 600º F for a short term (10 minutes). Refer to individual product packages for more temperature information.
How do I remove J-B Weld?
When fully cured, J-B Weld can only be removed by grinding or filing it off, or by directly heating the product above the 600º maximum temperature threshold.
Can J-B Weld be thinned?
Can I thin J-B Weld to make it easier to pour? Yes. Add up to one teaspoon of acetone or lacquer thinner per two ounces (one full package) of mixed product.
Can you put 2 coats of J-B Weld?
JB Weld can be applied in layers. Just clean the surface thoroughly, apply the JB welding, and wait at least 8 hours to re-apply. When applying additional layers, it's important to wait to apply until the first application is fixed.
How do you clean excess J-B Weld?
When fully cured, J-B Weld can only be removed by grinding or filing it off, or by directly heating the product above the 600º maximum temperature threshold.
Is J-B Weld supposed to get hard?
J-B Weld™ has a tensile strength of 5020 PSI and sets to a hard bond overnight. It can withstand temperatures up to 550ºF when fully cured.
How thick can I apply JB Weld?
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Does heat Cure JB weld faster?
Either use JB Quik as others mentioned or mix the JB weld & let it start to settup before applying to the area you want to patch. It's an epoxy, so should cure faster with heat.
What gets J-B Weld off your hands?
If you don't have hand cleaner or it doesn't work, try acetone or lacquer thinner. I clean my hands soon after I get the stuff on them. In my uses I'm through working with it in about 15-20 minutes and I try to remove it within twenty minutes after that.
What is the cure time for J-B Weld?
15-24 hoursMixed at a ratio of 1:1, it forms a permanent bond and can be shaped, tapped, filed, sanded and drilled after curing. At room temperature, J-B Weld sets in 4-6 hours to a dark grey color. A full cure is reached in 15-24 hours. J-B Weld has a tensile strength of 3960 PSI and sets to a hard bond overnight.
How do you get J-B Weld off your fingers?
Weld from fingers and skin. Acetone works great too.
Does JB Weld get hard or stay soft?
It stays soft for a few hours. That said, insufficient curing could be caused by several factors, the most important of which is: MIX REALLY REALLY THOROUGHLY. Scrape the surface of the mixing stick, and the container/surface you're mixing on, and then scrape them again.
How long does JB Weld 5 Minute epoxy take to cure?
1 hourFrom the manufacturer ClearWeld has a 1:1 mixing ratio, sets in 5 minutes and cures in 1 hour. With a tensile strength of 3900 PSI, ClearWeld sets to a hard, permanent bond.
Is JB Weld stronger than epoxy?
Weld was accualy better than epoxy. Not price wise, but its quality. JB Weld actually is stronger, but not enough to make it worth it. It's very hard to get smooth.
Product Description
J-B Wood Restore Liquid Hardener is a quick drying liquid for sealing and reinforcing decayed or rotted wood; for reducing moisture in decaying or rotted wood surfaces, prior to putty filling. The special liquid formula penetrates the wood to reinforce the fibers stopping further decay and providing a solid base for J-B Wood Filler Compound.
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4.0 out of 5 stars Worked great! I used this product to preserve tree bark ...
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History
The company had its beginnings in 1969 in Sulphur Springs, Texas. Sam Bonham, at the time running a machine shop, discovered a way to create what he called a "tougher than steel" epoxy. In 1968, Sam's future wife Mary persuaded him to sell his invention and he founded the J-B Weld Company. Sam died suddenly in 1989.
Products
The J-B Weld Company's original product line focused on a small number of products: J-B Weld (original 2-tube epoxy), J-B Kwik (4-hour epoxy), J-B Stik ( epoxy putty ), Waterweld (underwater adhesive/filler), and a few others.
J-B Weld epoxy
J-B Weld is a two-part epoxy adhesive (or filler) that can withstand high-temperature environments. J-B Weld can be used to bond surfaces made from metal, porcelain, ceramic, glass, marble, PVC, ABS, concrete, fiberglass, wood, fabric, or paper. Alcohol should be avoided when cleaning surfaces, as it can degrade the bond.
How does epoxy bubble?
Bubbles formed in epoxy coating over porous material (bare wood or foam) Air trapped in the epoxy escapes through the coating (out-gassing) as the material’s temperature is rising. Coat the wood with epoxy as the temperature is dropping—after warming the wood with heaters or during the later part of the day.
How to thin epoxy film?
A thin film will flow out much smoother than a thicker film after it is tipped off with the foam roller brush. Warm the epoxy to thin it or apply the coating at a warmer temperature. See Cold Temperature Bonding.
What causes epoxy to pull away from pinholes?
Surface tension causes the epoxy film to pull away from pinhole before it gels. After applying epoxy with an 800 Roller Cover, force epoxy into pinholes with a stiff plastic spreader held at a low or nearly flat angle. Re-coat and tip off coating after all pinholes are filled.
How to get air out of wood?
Coat the wood with epoxy as the temperature is dropping—after warming the wood with heaters or during the later part of the day. Apply a thinner epoxy coat, allowing air to escape easier. Tip-off the epoxy coating with a roller cover brush to break bubbles. See Barrier Coating.
Can you use epoxy to sand a fairing?
Fairing material is not thick enough. Add more filler to the epoxy mixture until it reaches a “peanut butter” consistency; the more filler added, the stiffer and easier it will be to sand. Allow the wet-out coat of epoxy to gel before applying the fairing material to vertical surfaces. See Fairing.