The Problem

A break in a plastic object that needs to withstand a certain amount of wear and tear (such as a container with a cracked lid) or an object that is flexible.

The Glue to Use

IPS Weld-On 16 Cement ($3.50 for 1.5 ounces, www.tapplastics.com) chemically welds the surfaces it touches.

How to Use It

Apply to both pieces and wait 15 to 30 seconds for the glue to get tacky before joining.

Align parts and hold together for about a minute, applying moderate pressure. The cement will set completely in 12 to 24 hours.

Sticking Points

Plastic cement is flammable and should not be used near an open flame.

The vapors can be harmful if inhaled in an enclosed area.

Cleanup

Wipe glue off surfaces and hands before it sets, using a damp cloth. If that doesn’t work, try nail-polish remover.

If the glue has set, scrape it off using a putty knife.