how to cut drywall

Question

Cutting drywall involves making straight cuts and holes for electrical boxes or plumbing. Here's a general guide on how to tackle it:

Answer 1

Tools:

• Sharp utility knife
• T-square (for straight cuts)
• Straightedge (optional, for marking straight lines)
• Rasp (for smoothing cut edges)
• Jab saw (for cutting holes) - alternatively, a keyhole saw

Steps:

1. Measure and mark: Measure and mark your cutting lines on the face (paper side) of the drywall with a pencil. You can use a straightedge to help ensure straight lines.

2. Score the drywall: Using a sharp utility knife, carefully score a line along your markings. For straight cuts, hold the t-square firmly against the drywall as you run the knife along its edge. Apply enough pressure to cut through the paper facing but not deep into the gypsum core.

3. Snap the drywall: Once you've scored the cut line, place the drywall sheet on sawhorses or another supportive surface with the scored line overhanging. Bend the drywall sheet gently along the scored line until it snaps at the cut.

4. Cut through the back paper: Carefully run the utility knife along the scored line on the backside of the drywall sheet to complete the cut.

5. Smoothing the cut (optional): Use a rasp to smooth any rough edges on the cut drywall for a cleaner finish.

Cutting holes:

• For holes like electrical outlets, use a jab saw or keyhole saw. Insert the saw blade into an existing hole or create a starter hole with a drill.
• Carefully guide the saw along the marked lines to cut out the desired hole shape.

Tips:

• Use a sharp blade to ensure clean cuts and avoid ragged edges.
• Wear safety glasses and gloves when cutting drywall.
• Consider using a dust mask, especially when cutting a lot of drywall sheets. Drywall dust can irritate the lungs.
• If you're cutting drywall that's already installed, be mindful of electrical wires and plumbing behind the wall.