How to Cut 1 1/4 Inch PVC Pipe? | Clean Cuts Every Time

A 1 1/4-inch PVC pipe (1.660-inch outer diameter) cuts cleanly with a ratcheting cutter, a fine-toothed hacksaw, or a drill-mounted internal cutter.

For the full breakdown, see our best 1 1/4 Inch PVC Pipe guide.

Working with 1 1/4-inch PVC pipe means getting the cut right the first time. Crooked cuts lead to leaking joints and wasted fittings. The good news is that you have several dependable options, from a quick ratcheting cutter to a basic hacksaw, and each one produces a square, burr-free edge with a little patience.

Below is how to cut 1 1/4 inch PVC pipe with the most common tools, plus the step order that keeps every cut straight and clean.

Which Tool Cuts 1 1/4 Inch PVC Pipe Best?

The best tool depends on how often you cut pipe and how much you want to spend. For a handful of cuts, a hacksaw works fine. For a full plumbing project, a ratcheting cutter saves time.

• Ratcheting PVC cutter: The fastest and most accurate hand option. Models rated for 1 1/4-inch pipe handle up to 1-5/8-inch outer diameter, covering the 1.660-inch O.D. of 1 1/4-inch Schedule 40 PVC.
• Hacksaw with a miter box: Costs almost nothing if you already own a saw. Use a fine-toothed blade (16 to 18 teeth per inch) with little or no set to avoid tearing the plastic.
• Internal PVC pipe cutter: Attaches to a standard drill and cuts 1 1/4-inch pipe from the inside out. It is ideal for tight spaces where a ratcheting cutter or saw cannot reach.
• Power miter saw: The best choice for cutting dozens of pipes. It handles all sizes but requires ear and eye protection.

If you are still picking out pipe for a project, our tested roundup of the best 1 1/4 inch PVC pipe options on the market can point you to the right schedule and brand before you make the first cut.

The Step Order That Works for Any Cutting Method

Every cutting method follows the same preparation: measure, mark, secure, then cut. Skipping the support step is the most common cause of cracked or angled cuts.

1. Measure and mark. Measure from the end of the pipe and draw a line completely around the circumference. A square or a wrap of tape keeps the line straight.
2. Secure the pipe. Clamp it in a vise, hold it in a miter box, or strap it down with duct tape. The pipe must not move or roll while you cut.
3. Cut along the line. Position the blade on the mark and cut straight through. For ratcheting cutters, squeeze and release the handle repeatedly until the pipe separates. For saws, use slow, even strokes.
4. Deburr and bevel the edge. Remove the burr from the inside with a knife or deburring tool, then bevel the outer edge with a hand file. This helps the pipe seat fully into the fitting.

How to Avoid Crooked Cuts and Binding

Two problems ruin more PVC cuts than anything else: the saw binding mid-cut and the pipe shifting under pressure. A 1 1/4-inch pipe is thick enough that a hacksaw blade can pinch as the cut closes.

Prevent binding by supporting the pipe on both sides of the cut line. Place it on level ground or set it in a miter box so the weight of the pipe does not pull the kerf closed while you saw. Reduce your cutting speed near the end of the cut for a cleaner break with a ratcheting cutter.

The final check is visual. An acceptable cut is perpendicular, straight all the way around the circumference, and properly beveled at the outer edge. If the cut is angled, trim it again before gluing.

FAQs

Can I use a regular hacksaw to cut 1 1/4-inch PVC?

Yes, but the blade matters. Use a fine-toothed blade with 16 to 18 teeth per inch and little or no set. Secure the pipe in a miter box or clamp first, then use slow strokes while keeping the blade square to the pipe.

Do I need to deburr PVC pipe after cutting?

Yes. Deburring the inside and beveling the outer edge helps the pipe slide fully into the fitting and creates a better glue joint. A hand file works for the outer edge, and a utility knife or deburring tool removes the interior burr.

What is the outer diameter of 1 1/4-inch PVC pipe?

1 1/4-inch Schedule 40 PVC pipe has an outer diameter of 1.660 inches and a wall thickness of 0.140 inches. When selecting a ratcheting cutter, check that its rated capacity covers this outer diameter.