After the string is in place pull on the string lightly to keep it in place to where you want to cut it;
How to cut pvc straight. Then, line up the blade with the cut mark, lift. Cutting 3 or 4 pipe. Sand the pvc pipes before cutting.
Cutting large, plastic (pvc or abs) sewer pipe straight and square can be challenging, especially without power tools, but it can be done. But it is also important to sand the ends so that the elbows. Close will be just fine.
At the same time saw with both ends of the string back and fourth. In this video, i show you how to cut pvc pipe perfectly straight. It can help make the blade glide.
Truth is, your probably are doing everything right, you just need some more. Mark where you want cut the pipe with a pencil. How to make a straight cut to a pvc pipe.
How do you cut straight line with sawzall? The sawzall will cut your pvc pipe within a matter of seconds. You can cut hard pvc and foamed pvc thinner than 5 mm in various ways.
Before you cut anything, try lubricating the pipe first. Sanding the pipes is primarily done to remove the stamps on the pipes. This is perhaps the easiest way to cut pvc pipe.