To define a cut line in laser engraving software you have to set it at a specific color at a specific stroke weight. For a Trotec laser, the weight is 0.0036pt.
The problem is, if you type in a decimal more than two places the Affinity software rounds it down to zero.
This is a showstopper bug that makes the software unsuitable for the production of laser engraved artwork.
Please fix this.