Knipex Pipe Cutters
Knipex conduit cutters are for clean, quick cuts on plastic conduit and pipe without crushing or leaving a ragged edge for the next fix.
If you're sick of burrs, flattened pipe, or wonky cuts that slow the fit-off, this is the right kit. Knipex pipe cutters are built for neat one-handed trimming on conduit, plastic waste, and pipe runs where a saw just makes extra mess. You will find the full range of Knipex Tools, including Knipex Cutting Tools and Knipex Pliers & Cutters, right here. Pick the size and blade style that matches the pipe you cut most.
What Are Knipex Conduit Cutters Used For?
- Cutting plastic conduit on first fix where you need a square, tidy end that slips straight into fittings without extra trimming.
- Trimming plastic waste pipe, overflow pipe, and similar tube on maintenance and install jobs where a hacksaw would leave swarf and rough edges behind.
- Working in tight cupboards, service risers, and under sinks where a compact Knipex conduit cutter tool gives you cleaner one-handed cuts than a full saw.
- Snipping small bore plastic pipe on repeat jobs, especially when a Knipex ratchet pipe cutter saves hand strain over a long day of install work.
- Finishing exposed pipework neatly on domestic and commercial jobs where crushed edges and ragged cuts look poor and slow down final assembly.
Choosing the Right Knipex Conduit Cutters
Match the cutter to the pipe you actually fit every week. Buy wrong here and you will either fight the cut or mark the pipe.
1. Match the cutter to the material
If you are mainly cutting plastic conduit, PVC, or waste pipe, go for a Knipex plastic pipe cutter made for clean shearing cuts. If you are dealing with metal tube as well, do not assume one tool does both jobs.
2. Check the pipe size first
If most of your work is on smaller conduit and pipe, a compact Knipex pipe cutter 25mm style tool makes sense and is easier in tight spaces. If you regularly cut larger diameter pipe, step up to a model with the proper cutting capacity rather than forcing a smaller tool.
3. Ratchet or direct cut
If you are doing repeat cuts all day, a Knipex ratchet pipe cutter is easier on the hands and gives more control through thicker wall plastic. For quick occasional cuts on lighter tube, a simpler direct-action cutter is often faster.
4. Think about access
If you are always working in cupboards, ceiling voids, or behind sanitaryware, pick a compact head and one-handed design. Bigger cutters are fine on open bench work but a nuisance once you are wedged into a tight service space.
Who Uses These on Site?
- Sparkies use Knipex conduit cutters for plastic conduit runs because they leave a cleaner end for fittings and couplers, especially on first-fix containment work.
- Plumbers and heating engineers reach for Knipex pipe cutters when trimming plastic pipe and overflow runs under sinks, behind WC frames, and in cramped service voids.
- Maintenance teams keep one in the bag for quick repairs where a neat cut matters and there is no room for a saw or a bench setup.
- Kitchen and bathroom fitters swear by them for snagging and final fit work because they help keep visible pipework tidy without cracking the material.
The Basics: Understanding Knipex Conduit Cutters
These are built to shear plastic pipe and conduit cleanly rather than sawing through it. That means less mess, less dressing back, and a better fit into the next fitting.
1. Shearing Instead of Sawing
A Knipex conduit cutter tool uses a shaped blade to press through the pipe wall cleanly. On site that means fewer burrs and less swarf dropping into the run or onto finished surfaces.
2. Ratchet Action for Thicker Plastic
A Knipex ratchet pipe cutter closes in stages, so you do not need one big squeeze. That helps when cutting thicker plastic pipe and keeps the cut controlled instead of crushing the tube.
3. Capacity Matters
The stated cutting size is the bit to watch. Pick a cutter that suits the outside diameter you use most, otherwise the tool will either not close properly or will mark the pipe before it cuts.
Choose the Right Knipex Conduit Cutters for the Job
Use this quick guide to sort the right cutter for the pipe in front of you.
| Your Job | Knipex Conduit Cutters or Type | Key Features |
|---|---|---|
| Cutting plastic conduit on first fix | Compact conduit cutter | Clean square cuts, one-handed use, easy fitting prep |
| Trimming small plastic pipe in tight cupboards | Small head pipe cutter | Short body, good access, less chance of marking nearby finishes |
| Repeat cuts on thicker wall plastic | Ratchet pipe cutter | Staged cutting action, less hand strain, better control |
| Snagging visible waste or overflow pipe | Fine cut plastic pipe cutter | Neater finish, reduced burrs, less cleanup before assembly |
| General van kit for mixed small bore plastic jobs | Mid-capacity plastic pipe cutter | Covers common sizes, quick setup, reliable for daily maintenance work |
Common Buying and Usage Mistakes
- Buying by brand alone and not by pipe size is a common mistake. Check the cutter capacity first or you will end up forcing the tool and crushing the pipe.
- Using a plastic pipe cutter on copper or other hard metal tube will wreck the edge and spoil the cut. Use the right Knipex tube cutter for the material, not just whatever is nearest in the bag.
- Letting the blade go blunt makes the cutter chew and deform the pipe instead of slicing it cleanly. If cuts start looking rough, replace the blade before it slows the whole job down.
- Twisting the cutter through the cut instead of keeping it square leaves wonky ends that fight the fitting. Keep the tool straight and let the blade do the work.
- Choosing a big cutter for occasional tight-access work sounds sensible until you are under a sink with no swing room. For service voids and cupboards, compact tools are usually the better buy.
Ratchet Pipe Cutters vs Direct Cutters vs Tube Cutters
Ratchet Pipe Cutters
Best for thicker plastic pipe and repetitive cutting where hand strain becomes a problem. Slower per cut than a simple squeeze cutter, but far easier to control and less likely to crush the pipe.
Direct Cutters
Best for quick work on smaller plastic conduit and pipe where speed matters and access is tight. They are simple and fast, but once the wall thickness goes up, they take more effort.
Tube Cutters
These are the better pick for metal tube such as copper, where a shearing blade is the wrong tool. They roll and score round the pipe for a controlled cut, but they are not the fastest answer for plastic conduit work.
Maintenance and Care
Keep the blade clean
Wipe off plastic residue and site grime after use. A dirty blade drags through the cut and starts leaving rough edges on conduit and pipe.
Replace blunt blades early
Do not wait until the cutter is mangling pipe. Once the edge goes off, swap it out so the tool keeps giving clean cuts and does not strain the mechanism.
Oil the pivot lightly
A drop of light oil on the hinge or ratchet keeps the action smooth, especially if the tool lives in the van and sees damp mornings or dusty refurbs.
Store it closed and dry
Chuck it back in the bag wet and it will soon start showing corrosion around the moving parts. Dry it off and lock it closed to protect the blade edge.
Check for play in the mechanism
If the head starts wobbling or the ratchet skips, do not ignore it. That usually means worn parts or damage, and it is better to sort it before it ruins a run of cuts.
Why Shop for Knipex Conduit Cutters at ITS?
Whether you need a compact Knipex pvc pipe cutter for tight first-fix work or a larger Knipex pipe cutter for repeat plastic pipe cuts, we stock the proper range. That includes the wider Knipex hand tool lineup alongside related kit like Knipex Water Pump Pliers and Knipex Cobra. It is all in our own warehouse, in stock, and ready for next day delivery.
Knipex Conduit Cutters FAQs
What pipe sizes can Knipex pipe cutters handle?
It depends on the model. Some are aimed at smaller conduit and plastic pipe, while others will take larger outside diameters. Check the stated maximum size before you buy. If you mostly cut small conduit, a compact tool is quicker and easier. If you need more than a Knipex pipe cutter 25mm capacity, go up a size rather than trying to force it.
Can Knipex conduit cutters cut plastic conduit?
Yes, that is exactly where they make sense. A Knipex conduit cutter is built to give a clean, square cut on plastic conduit without the mess and burrs you get from a saw. They are especially handy on first-fix electrical work where tidy ends help fittings go on properly.
How do you replace the blade on a Knipex pipe cutter?
Most Knipex pipe cutters are designed so the blade can be changed without much fuss, but the exact method depends on the model. Usually it is a case of opening the tool, releasing the retaining screw or fixing point, and fitting the correct replacement blade. Do it as soon as the cut quality drops. A blunt blade will mark and crush plastic long before it fully fails.
What's the difference between a pipe cutter and a conduit cutter?
A conduit cutter is usually aimed at plastic electrical conduit and similar light tube, where a neat edge matters for fittings. A pipe cutter can be broader, covering plastic pipe and sometimes other tube types depending on design. The main thing is not the name on the handle but the material and diameter it is rated for.
Are Knipex pipe cutters suitable for copper pipe?
Some Knipex tube cutter models are suitable for copper, but plastic shearing cutters are not the right choice for it. If you are working on copper pipe, use a proper tube cutter designed for metal. It will give you a cleaner cut and save you from damaging both the tool and the pipe.
