The Elcometer cross hatch cutter is a simple means of assessing the adhesion or resistance to separation of coatings from substrates.
The cutter, which has of a number of blades at equal spacing, is used to score through the coating down to the substate. Two cuts are made at right angles to each other resulting in a grid of small squares. Debris is removed from the surface of the sample and then adhesive tape is applied over the grid.
After removal of the tape, the coating adhesion is assesed by reference to charts shown in the relevant standard.