Plastic milk bottles, when your project or prototype needs an urgent source of plastic, they are often the first thing to hand. Convenient and flexible, but strong at the same time and usually free, ...

Should you weld that cracked bumper or use adhesive to fix it instead? Both methods can get the job done, but there are pros and cons you should be aware of.

There are several techniques for joining plastic parts. Equipment cost and labor for each method vary considerably. Most techniques have limits on the sizes and types of plastic that can be joined.