On a large thin sheet the probes around the fixed point stepped clean through the sheet (twice the mesh tolerance of a 465 mm part is more than its 0.8 mm thickness), so a point exactly on the face touched no material and the fold was refused. The probes now also step a quarter of the thickness. Co-authored-by: jonaswre <[email protected]> Co-authored-by: Claude Opus 5.5 <[email protected]>