How to shape the stones into curved shapes

When Borsheim decided to expand production to include kerbstones, there was a challenge: how to shape the stones into curved shapes without making the process cumbersome and labour-intensive. After researching solutions abroad without success, Jarle Borsheim decided to find his own solution.

Jarle Borsheim started by visiting Portugal, where he observed a method where the arches were cut by hand before being sanded with an angle grinder and finally treated with flames or dots. This method was too cumbersome and the alternatives required a lot of time and manual labour.

He then contacted RobotNorge and an Italian supplier of wire saws. The tracks and linear guides were manufactured locally in Ålesund. They modified the wire saw so that it could be mounted on an industrial robot arm with six axles. The table that would hold the stone blocks in place was manufactured in-house at Borsheim. Currently, the saw could handle boulders with a maximum height of 30 cm, but they are working on developing a saw that can handle boulders up to 75 cm.