rockslice

The world isalready built.Now it must change.

A new way to cut deep openings in rock and concrete, from one side, while everything around keeps running.

Talk to us

Working with

EvinyMestaSkanskaRisaBrødrene Ulveseth

WHY NOW

Europe must rebuild what it runs on.Without switching it off.

+70%

more electricity for Europe's data centres by 2030.

€169bn

set aside in Germany to repair roads, rail and bridges by 2029.

75

hydropower upgrades approved in Norway, waiting to be built.

The money is there. What's missing is time.

IEA via EUDCA 2026 · German federal government, July 2026 · NVE, tertial 1/2026.

The problem

We asked the people on site:where does it hurt?

Hydropower

“We keep cutting too close to cables and pipes.”
Hydropower owner

Tunnels & bridges

“Wire sawing is fast, but it puts the crew at risk.”
Road contractor

Buildings

“You can't touch the beams and walls next to it.”
Large contractor

Paraphrased from our interviews with owners and contractors.

Three places. One problem.

One power station unit. One day stopped.

Up to NOK 2.7 million

in electricity value, by our estimate.

Calculation and source

100 MW × 24 hours × about NOK 1,120 per MWh (NVE, first half of 2026) ≈ NOK 2.7 million.

Illustrative electricity value, not a measured loss or Rockslice saving.

And the cut itself is only a small part of the bill. Most of it is time, protection and risk.

Why it matters

One block out.The rest stays standing.

A small opening should not mean a big operation.

A conventional concrete saw needs a large blade and room around it. Rockslice uses a small blade on a slim arm that follows it into the cut.Conventional sawRockslice

Big blade. Big room.

Small blade. The arm goes in.

The value is not just what you remove.
It is what you leave untouched.

Prototype cutting stone.

How it works

The arm sets the depth,not the blade.

  1. 01

    A rail guides the cut.

  2. 02

    Water drives the diamond blade.

  3. 03

    The arm follows into the slot.

  4. 04

    The pump stays outside.

23 cm

blade

1 side

to cut from

Patented · NO 349064

Patented in Norway. Pending internationally.

Animated cutaway: a rail guides the water-driven blade and arm through the rock while adjacent cable and pipe stay untouched
Design illustration, not to scale.

Everything around it

Out of the risk zone.Gentler on the structure.

The crew

  • Dust bound in water
  • Out of the risk zone
  • No one holding a hose

The structure

  • No blasting. No hammering.
  • Clean corners. No overcuts.
  • Carried in. Mounted on site.

The team

One physicist with an idea.Now five.

How it started

  1. Rock blocked his garage.
  2. In Minecraft, one block comes out.
  3. Nothing else moves.
  4. So he built it. It worked in the workshop.
Jesper Tveit soldering electronics at the workshop bench
Jesper TveitPHYSICIST, PHD IN FLUID DYNAMICSCO-FOUNDER

  • Jesper Tveit

    CTO & co-founderInvented the technology

  • Nikolai Nordbotn

    CEO & co-founderCustomers and capital

  • Liam Nolan

    MechanicalSurgical robotics, California

  • Daniel Hammer

    ControlsBuilt the control system

  • Åshild Aarø

    MarketHelped build StartupLab Bergen

Two Rockslice colleagues in the Bergen workshop
A Rockslice colleague making a point in a meeting
A Rockslice colleague checking the tooling in the workshop milling machine
Electronics testing at the workshop bench
Drawn, built and tested in our own workshop.

Have a cut no oneelse can make?Tell us about your site.

Tell us about your sitecontact@rockslice.com