Pros draw the cut line on the back of the plank rather than the front for two reasons.
Cutting square in vynl siding.
This is a trick on how to cut vinyl siding the quickest and easiest way without breaking or chipping it.
One is to avoid having part of the line visible after you make the cut.
You ll need a fine tooth plywood saw blade to do this correctly.
Make the line as dark as possible so it s visible when you re cutting it.
Use a carpenter s square to draw the line straight.
If you re cutting dark vinyl siding use chalk or light colored tape to mark the line you want to cut.
This method is best for cutting a lot of short or long vertical cuts since the circular saw will create clean incisions relatively quickly.
To cut vinyl siding with a circular saw you can find specialty vinyl siding blades but most people just turn a fine toothed blade around so it spins the opposite direction.
This prevents the teeth of the saw from grabbing the material.
Using a circular saw is the first method that you can use to cut vinyl siding.
Put a carpenter s square.
Not just any circular saw blade will do.
When crosscutting vinyl siding all you need is an accurate measurement of the length of the plank and a speed square to draw an accurate perpendicular cut line.