Pipe Wrap Around Guide — How to Mark a Square Cut on Pipe
A flexible wrap-around marking tool for scribing a dead-square cut line around pipe, tube and conduit — and reading the pipe’s outside diameter from the printed scale.
Quick Fixes — Read This Before Returning
- “My line doesn’t meet up when it goes around.” The wrap is not square to the pipe. Pull it tight and slide it until the edge meets itself exactly where it overlaps — when the edges line up all the way round, the line will be square.
- “It’s too long for my pipe.” That’s normal. A bigger wrap works on any smaller pipe — just let the extra overlap.
- “It won’t reach around.” Your pipe is bigger than the wrap’s rated outside diameter. Check the size table below.
- “It curled / went soft.” Heat. Take it off before you cut, grind or weld.
Are These the Right Instructions for You?
This page covers the CLPA Pipe Wrap range, sized by the largest outside diameter (OD) of pipe they fit:
| Model | Fits pipe up to (OD) |
|---|---|
| PR05 — 6" | ½" to 6" (152mm) |
| PR-11 — 11" | 11" (279mm) |
| PR-15 — 15" | 15" (381mm) |
| PR-20 — 20" | 20" (508mm) |
| PR-24 — 24" | 24" (610mm) |
Need to mark a saddle or a corner cut rather than a straight cut? See the Coping Wing and Corner Wing support page.
Before You Start
- Material: 0.4mm clear polycarbonate — flexible enough to hug the pipe, clear so you can see your line.
- You will need: a scribe, soapstone, paint marker or fine permanent marker.
- Clean off loose scale, grease and dust so the wrap sits flat.
How To Use It
Marking a square cut line
- Wrap the tool around the pipe at the cut position.
- Pull it snug and overlap the ends.
- Slide and twist until the edge meets itself exactly at the overlap. That is the only check you need — if the edges meet, the line is square.
- Hold it in place (a spring clamp or a hand on the overlap) and run your marker along the edge all the way round.
- Remove the wrap, then cut.
Reading the pipe outside diameter
Wrap the tool snugly around the pipe and read the outside diameter directly from the diameter scale where the end overlaps. No tape measure, no circumference maths.
Insulation and lagging
Use the same method on pipe insulation to mark a clean, square trim line.
Heat
Polycarbonate handles incidental warmth, but not flame, sparks or arc heat. Mark, remove the wrap, then cut, grind or weld. A wrap left on hot pipe will soften and curl.
Looking After Your Wrap
- Wipe with a rag and isopropyl alcohol or methylated spirits. No acetone, thinners or abrasive cleaners — they cloud polycarbonate.
- Roll it loosely or store flat. Keep it out of the sun on the dashboard.
Common Mistakes
- Marking before the edges meet at the overlap — the line spirals.
- Leaving the wrap on while cutting or welding.
- Buying a wrap smaller than the pipe — always size to the largest OD you work on.
When to Email Us
Email sales@clpa.au with your order number and a photo if your tool arrives damaged, you ordered the wrong size, or a printed line looks off-register. We aim to reply within one Brisbane business day — if you are in the USA or UK, remember we are a day ahead. We make every tool in-house, so we can usually replace, exchange or quote a custom size faster than a return would take.
Returns and Warranty
Unused items can be returned within 30 days of delivery in original condition — see our Refund Policy. Every CLPA tool carries a 12-month manufacturer warranty against defects in materials and workmanship. Bought on Amazon? Amazon’s return policy applies to your order, and our warranty still covers the tool.
More help: Frequently Asked Questions.
We Make What We Sell
Custom Laser Products Australia (CLPA) is a small veteran-owned family business. We design, laser-cut and UV-print every tool on the Sunshine Coast, Queensland. We are the manufacturer, not a reseller.
CLPA Customer Support · sales@clpa.au · clpa.au