https://forums.autodesk.com/t5/autocad-forum/auto-trim-objects-outside-of-a-2d-boundary/m-p/6226909#M341948 <BLOCKQUOTE><HR /><a href="https://forums.autodesk.com/t5/user/viewprofilepage/user-id/69526">@Kent1Cooper</a> wrote:<BR /> <P>...&nbsp; That pattern certainly looks as though it could be defined pretty easily into a Hatch pattern....</P> <HR /></BLOCKQUOTE> <P>Such as this:<BR /><BR /></P> <P>*LATTICE5, Lattice of parallel lines in 5 directions<BR />30, 0,0, 0,1<BR />60, 0,0, 0,.8660254<BR />90, 0,0, 0,1<BR />120, 1,0, 0,.8660254<BR />150, 1,0, 0,1</P> <P>&nbsp;</P> <P>EDIT:&nbsp; And here's a more fully symmetrical-ized and also kind of interesting pattern [horizontals&nbsp;in the added first line]:</P> <P>&nbsp;</P> <P>*LATTICE6, Lattice of parallel lines in 6 directions<BR />0, 0,0, 0,.8660254<BR />30, 0,0, 0,1<BR />60, 0,0, 0,.8660254<BR />90, 0,0, 0,1<BR />120, 1,0, 0,.8660254<BR />150, 1,0, 0,1</P> Mon, 21 Mar 2016 18:37:17 GMT Kent1Cooper 2016-03-21T18:37:17Z