How it works
Three modes: Known offset uses thickness and centre offset. Against obstacle uses thickness, drill diameter and lower/upper obstacle. Floor + wall uses wall thickness, drill diameter and required vertical height difference.
Results
Angle is shown as deviation from 90° to the surface. Results include the relevant drilling length and geometry. Known offset and Against obstacle can open Angle mount with the calculated angle and thickness.
Practical check
With two obstacles the app finds an allowed angle range when the opening fits. If it is too tight, compromise options are shown; these are not collision-free solutions.