Cutting a neat hole in a benchtop for a powerpoint is a satisfying cabinetmaking task that most confident DIYers can handle — but remember, connecting the actual electrical wiring is restricted work in New Zealand and must be carried out by a licensed electrician. Here's how to get the cutting side of the job done cleanly and professionally.
Understand What You're Cutting Into
Before you pick up a tool, identify your benchtop material. The most common types in NZ homes are:
- Laminate over particleboard (e.g. Formica or Laminex) — the most common and easiest to cut
- Solid timber or engineered timber — requires sharp tooling and care to avoid tear-out
- Stone or reconstituted stone (e.g. Caesarstone) — requires specialist diamond tooling; best left to a professional
- Compact laminate (e.g. Formica Compact) — dense and hard-wearing but cuttable with the right blade
If you have a stone benchtop, stop here and call a stonemason or benchtop specialist — attempting to cut stone without the right equipment will crack or chip it.
Tools and Materials You'll Need
- Jigsaw with a fine-tooth downcut blade (to minimise laminate chipping)
- Drill with a suitable drill bit (10–12 mm) for a starter hole
- Tape measure and pencil
- Masking tape (to protect the surface and reduce chip-out)
- Powerpoint template or the powerpoint unit itself for marking
- Straight edge or square
- Safety glasses and dust mask
- Vacuum or dust sheet to catch debris inside the cabinet
Step-by-Step: Cutting the Hole
1. Mark Out the Opening
Most benchtop powerpoint units (sometimes called pop-up sockets or flush powerpoints) come with a paper or cardboard template. If not, place the unit face-down on the benchtop in your chosen position and trace around the inner cut-out line with a pencil. Double-check the position — make sure you're not cutting over a cabinet rail, drawer runner, or existing wiring below.
Apply masking tape over the marked area before drawing your final cut line on top of the tape. This protects the laminate surface from the jigsaw foot scratching it and helps reduce chip-out on the top face.
2. Drill a Starter Hole
Drill a 10–12 mm hole just inside one corner of your marked rectangle (or at a point on the circle if it's a round cut-out). This gives the jigsaw blade somewhere to start. Drill slowly and keep the drill perpendicular to the surface.
3. Make the Cut
Fit your jigsaw with a fine-tooth downcut blade — these cut on the downstroke, which keeps the top laminate face clean. Set the jigsaw to a moderate speed with no orbital action for laminate. Insert the blade into your starter hole and cut carefully along the inside edge of your marked line, keeping the jigsaw foot flat on the tape at all times.
For rectangular cut-outs, cut each side in a single pass and use a sharp chisel to clean up the corners if needed.
4. Test the Fit
Offer the powerpoint unit up to the hole before removing the tape. It should drop in snugly with the flange sitting flat on the surface. If it's tight, use a fine rasp or sandpaper wrapped around a block to ease the edges — take off small amounts at a time.
5. Seal the Exposed Edge
Particleboard and MDF are vulnerable to moisture. Once you're happy with the fit, seal all cut edges with a waterproof PVA glue, silicone, or a purpose-made edge sealant. This is especially important in kitchens and laundries. Allow to dry fully before fitting the powerpoint unit.
6. Remove the Tape and Clean Up
Peel the masking tape back slowly at a low angle to avoid lifting the laminate. Wipe the surface clean and inspect the cut edge — a neat, chip-free line is the goal.
The Electrical Connection: Restricted Work
Once the hole is cut and the powerpoint unit is ready to drop in, do not attempt to wire it yourself. Under the Electrical Workers Registration Board (EWRB) rules, connecting any fixed wiring — including a benchtop powerpoint — is restricted electrical work. It must be performed by a registered electrician who will issue you a Certificate of Compliance (CoC) on completion. Note that a Certificate of Compliance is issued by the electrician for the electrical work itself — check with your electrician whether any additional council notification or consent is required for your specific situation. Working on fixed wiring without a licence is illegal and dangerous, and can void your home insurance.
You can find a qualified local electrician on tradedirectory.co.nz.
Tips for a Professional Finish
- Always cut on the waste side of your line — you can always remove more material, but you can't put it back
- Use a sharp, new blade for every cut — dull blades cause tear-out and wandering
- If your benchtop is dark or patterned, use a white pencil or chalk line for visibility
- For round cut-outs, a hole saw of the correct diameter gives a cleaner result than a jigsaw
- Keep the cabinet below clear of sawdust — vacuum it out before the electrician arrives
When to Call a Professional
Call a cabinetmaker or benchtop specialist if:
- Your benchtop is stone, solid stone composite, or you're unsure of the material
- You're not confident with a jigsaw or the cut is in a tricky location
- The existing benchtop is a custom or expensive material you can't afford to damage
Always call a licensed electrician to complete the wiring — no exceptions. Check WorkSafe NZ for more on electrical safety in the home.
For broader guidance on what building and trade work requires a consent or licensed professional, visit MBIE Building Performance.
