
To get the schist pattern I took a photo of another building with schist cladding, imported it into my drawing and traced rectangles over the stones. StoneCAD is the industry Standard for architects, engineers, landscape designers or anyone else responsible for the design, documentation or detailing for construction that includes Cultured Stone® veneers and trims. Without the Add-In HatchKit can adjust hatch pattern elements to fall within Revit's scaling limits when loaded with 1:1 scaling. The upper scaling limit can be avoided by using the HatchKit Add-In for Revit to load patterns. The second message, issued when a pattern has elements with repeat distances greater than about 70 feet, is less understandable.

The first message arises when some element within the pattern is too small - Revit's smallest line length is 1/32' and that is quite a reasonable restriction. Revit imposes undocumented limits on hatch pattern scale.
