Would this be useful to pre-emptively reinforce the corners of a suitcase before letting airport baggage handling throw it around?

It's not an appropriate application. This product is a wrap to repair a fracture. I doubt that you could secure it around a corner. Even if you were able to get it to adhere, it wouldn't be durable. It would also be unattractive.

Is the tape flexible when you apply it, or more stiff?

Flexible like tape when applied. Then it hardens

Can this be used to reinforce the inside of a rotocast resin helmet?

Not sure about your application, but my guess is no. Fiberweld is a water-activated fiberglass wrap/strip. For your application, you might have better luck with using a sheet of fiberglass cloth to form into the helmet and then apply fiberglass resin to the cloth to make a reinforced shell.

can you patch a nonwater pipe with a half wrap

Not certain what you are describing as a half wrap. If you only use half of what is indicated, you will compromise the strength of the repair. If it is a very narrow pipe, you might be able to use less but there should be at least 3 "wraps" around the breach for stability and strength.

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🛠️ Fix it once, fix it forever—FiberWeld your way to unbreakable confidence!

FINISH LIKE A PRO - Once cured, sand and paint to blend repairs flawlessly with your project.
WORK TIME PRECISION - 5-10 minutes of moldable application time ensures perfect placement before curing.
ALL INCLUSIVE REPAIR KIT - Comes with gloves and securing bandage for a clean, professional application every time.
VERSATILE SURFACE ADHESION - Engineered to bond seamlessly with a wide range of materials for ultimate repair flexibility.
STEEL STRONG BOND IN 15 MINUTES - Activate with water, apply, and watch it harden like steel—fast and permanent.

J-B Weld FiberWeld Permanent Repair Cast is a high-strength, water-activated fiberglass wrap that cures in just 15 minutes to form a durable, steel-like bond with 1500 PSI bend strength. Designed for quick, versatile repairs, it offers 5-10 minutes of working time and can be sanded and painted after curing. The kit includes gloves and a securing bandage, making it a complete solution for professional-grade fixes.

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€ 31.56

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Smooth transaction and product arrived in perfect condition.

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Brand	J-B Weld
Specific Uses For Product	Repair
Material	Plastic
Item Form	Tape
Special Feature	Strong
Color	Black
Item Package Quantity	1
Package Information	Can
Viscosity	Medium to High
Full Cure Time	15 Minutes
Tensile Strength	1500 PSI
Unit Count	3.0 Feet
UPC	043425382368
Global Trade Identification Number	00043425382368
Manufacturer	JB Weld
Model	FIBERWELD 2x36" REPAIR CAST BLACK
Item Weight	2.46 ounces
Product Dimensions	1.5 x 4.94 x 7.87 inches
Item model number	38236
Manufacturer Part Number	38236
Special Features	Strong

FiberWeld Permanent Repair Cast 2x36 Inch - High Strength Adhesive Fiberglass Wrap - Black, 38236

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