Thanks Neil,
I've saved that for future use. Like the Cheap Tricks article noted, it was hard to get my head around rotated lines in a pattern. Here, I think I made these correct. I should note that in the process of testing the patterns, I was having trouble getting the revised patterns to show when re-hatching a test hatch. I had to first delete the hatch, then purge the drawing
(Hatch>Manage>Purge>OK) because the file hangs on to a hatch when it is deleted. As a young man, I had hangovers like that, which also required purging to prevent them.
Anyway, here are two patterns for pinwheeling tile patterns that are preset to 1" scale (I think - please jump in here to correct me on any of this) for 12" and 6" tiles. Someday I'll try to adjust them for, say 12" and 4" tiles, 12" and 3" tiles, etc.
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PinWhlL1-2.DHP
[Header]
Scale=32
Angle=0
Display Scale=10
Segments=2
[Segments]
001= 0, 0, 0, 0, 0, 18, 6, 18, -12
002=0, 0, 90, 6, 0, 12, -6, 18, -12
----------------------------------------------
PinWhlR2-1.DHP
[Header]
Scale=32
Angle=0
Display Scale=10
Segments=2
[Segments]
001= 0, 0, 0, 0, 0, 12, 6, 18, -12
002=0, 0, 90, 0, -6, 12, 6, 18, -12