Hold or secure the chalk line at the end point of the line.
How to snap a chalk line for roofing.
To pop long chalk lines accurately when flooring or roofing.
Find the endpoints of your line and drive a nail in at each point.
You may need a measuring tape to set these points.
Using or snapping off a chalk line is simple.
Pull straight up from the middle and let the string snap.
First shake up the chalk inside your tool or add chalk if it does not have any.
Mark the two end points of the line you are trying to draw.
The end of the chalk line is tied to a loop or clip.
You can create a straight line over a considerably length without any lasers or high tech equipment when you know how to snap a chalk line properly.
Then hook one end of the chalk snap line to your beginning point.
Stretch the chalk coated string tightly between the nails.
Hammer a nail or drive a screw into one of the end points.
If you have a well functioning chalk snap line you can slowly play out the line without using the crank.