--- In [email protected], "sadkra" <[EMAIL PROTECTED]> wrote: > > --- In [email protected], "Rick Collins" <gnuarm.2006@> > wrote: > > > > I'm not sure what you are asking about. I have never seen oblong > > holes in a board. Are you talking about a routed slot? When you > > produce gerber files, how are the oblong holes defined? Regular > holes > > are defined in a drill file typically in the Excellon format. In > what > > output file are your oblong holes defined? > > > > Hello, > > Some components do have non-circular leads such as Power Relays, Fuse > Holders, Fuses etc. You can check the Gerber section in Kicad help, > there is topic about rectangular holes. Also you can check Pad > properties of any pad in kicad. > > BTW, these holes are defined in drill file only. Here is what my drill > file & drill report file says, > > xxxx-drl.rpt > ------------- > T2 0.032" 0.81mm (19 holes) > T3 0.035" 0.90mm (426 holes) (with 8 oblongs) > T4 0.039" 1.00mm (14 holes) > > xxxx.drl > ------- > T3 > .... > X1.050Y-5.250G85X1.050Y-5.050 > G05 > X1.050Y-4.857G85X1.050Y-4.656 > G05 > X1.300Y-5.250G85X1.300Y-5.050 > G05 > X1.300Y-4.857G85X1.300Y-4.656 > G05 > X1.800Y-5.250G85X1.800Y-5.050 > G05 > X1.800Y-4.857G85X1.800Y-4.656 > G05 > X1.550Y-5.250G85X1.550Y-5.050 > G05 > X1.550Y-4.857G85X1.550Y-4.656 > G05 > T4 > > Well, I loaded the file in GerbView 6 & all I can see a single hole. > That was the reason I tried Postscript output. > > My ancient BoardMaker for DOS also supports such rectangular holes as > standard pad type. But most modern layout softs doesnot allow this !? > > I have circumvented this problem(Eagle) by placing overlapping holes > on a single pad thus creating rectangular hole. Since kicad does not > allow this & it does supports the non-circular holes I tried it. > I just wanted to cross-check the output! > > regards, > sam_des
This may be a nit, but the drill file excerpt shown above is for routs, not drilled holes. The command is describing a hole that is "dragged" from the first point to the second. This will create a hole (also called a slot) that is as wide as the specified hole and as long as the path plus the hole size. The ends of the hole are rounded. So technically this is not a rectangular hole. These holes are not made by drills, they are routed. I believe you are asking for holes that are 0.035 x 0.200 inches. For rectangular pins, I often just drill a hole the max size of the pin. But 0.200 inches would be a bit large and would be very hard to solder. Using multiple drill holes to create a rectangular hole will likely be rejected by the board maker. A drill can't be used right next to a hole. The bit will slip sideways into the existing hole, possibly breaking the bit. That is why they rout slots. Because routing before plating is an extra step, board makers typically charge extra for slots.
