Make an improvised guide by screwing together scraps of 2×4. Saw using a handsaw with a blade that’s 3 or 4 inches wide. Note: Square pipe ends fit snugly into the fittings, allowing plenty of contact ...

This article was updated May 23, 2023. It was originally published June 15, 2000. Plastics are an integral part of everyday life. They can be found in everything from packaging machine and cars to ...