William Chops Westfield wrote: > On Apr 14, 2007, at 3:33 PM, Jon Chandler wrote: > > >> With the boards I've made at Advanced Circuit www.4pcb.com) I only send >> one drill file and somehow the boards get correctly made with plated >> and >> non-plated holes. >> > > Which "format" of drill files do you send?? > > BillW > I checked and I actually send two files. The first is the Excellon "tool rack" file that specifies the sizes of the drills used. The second file specifies the locations of all the holes. For a test board with one "hole" and one plated hole/pad of the same diameter, there's no differentiation in the Excellon files. One tool shown with two locations. Jon -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist