Re: gEDA-user: Is it possible to do square holes in PCB?
Hello all, I did an oval shape hole once by using three overlapping round drill holes, worked fine. maybe you can do the same with 6 small round holes: ooo ooo ooo Cheers, Robert -Original Message- From: Dave N6NZ n...@arrl.net Reply-to: gEDA user mailing list geda-user@moria.seul.org To: gEDA user mailing list geda-user@moria.seul.org Subject: Re: gEDA-user: Is it possible to do square holes in PCB? Date: Sun, 21 Feb 2010 15:08:15 -0800 Mailer: Apple Mail (2.1077) On Feb 21, 2010, at 2:01 PM, Mark Rages wrote: On Sun, Feb 21, 2010 at 1:55 PM, Anthony Shanks yamazak...@gmail.com wrote: Some parts have mounting brackets that are square, not round. Yes I know I can make a equivalent circlular hole that would fit but it wastes a lot of space doing that and it interferes with routing. Have you talked to your board house about this? I wonder what happens if you specify a reuleaux drill in the fab drawing... How large is the square that you need? At some point, this is just another routed cut-out. You end up with a corner radius the size of the router bit in use, or else you can route a little past the corner to clear the corner of your square bracket. You would have to talk to your PCB house, but I'd be thinking along the lines of agreeing on what router bit is going to be used, and then adding a layer where the tracks represent the centerline of the routing operations. Wacky board shapes done by a CNC router are nothing new, routed cut-outs fall into that category. I'm sure your PCB house has a preferred way of getting the information. They will no doubt charge you the full freight, though, I don't know of any prototype service that does non-rectangular boards, although they might exist. -dave ___ geda-user mailing list geda-user@moria.seul.org http://www.seul.org/cgi-bin/mailman/listinfo/geda-user ___ geda-user mailing list geda-user@moria.seul.org http://www.seul.org/cgi-bin/mailman/listinfo/geda-user
Re: gEDA-user: Is it possible to do square holes in PCB?
Why exactly would you want square holes? Set the hole flag for non-plated holes (not sure how to do that through the gui though) ___ geda-user mailing list geda-user@moria.seul.org http://www.seul.org/cgi-bin/mailman/listinfo/geda-user
Re: gEDA-user: Is it possible to do square holes in PCB?
Some parts have mounting brackets that are square, not round. Yes I know I can make a equivalent circlular hole that would fit but it wastes a lot of space doing that and it interferes with routing. On Sun, Feb 21, 2010 at 3:26 AM, Duncan Drennan duncan.dren...@gmail.com wrote: Why exactly would you want square holes? Set the hole flag for non-plated holes (not sure how to do that through the gui though) ___ geda-user mailing list geda-user@moria.seul.org http://www.seul.org/cgi-bin/mailman/listinfo/geda-user ___ geda-user mailing list geda-user@moria.seul.org http://www.seul.org/cgi-bin/mailman/listinfo/geda-user
Re: gEDA-user: Is it possible to do square holes in PCB?
On Sun, Feb 21, 2010 at 1:55 PM, Anthony Shanks yamazak...@gmail.com wrote: Some parts have mounting brackets that are square, not round. Yes I know I can make a equivalent circlular hole that would fit but it wastes a lot of space doing that and it interferes with routing. Have you talked to your board house about this? I wonder what happens if you specify a reuleaux drill in the fab drawing... Regards, Mark markra...@gmail -- Mark Rages, Engineer Midwest Telecine LLC markra...@midwesttelecine.com ___ geda-user mailing list geda-user@moria.seul.org http://www.seul.org/cgi-bin/mailman/listinfo/geda-user
Re: gEDA-user: Is it possible to do square holes in PCB?
On Feb 21, 2010, at 2:01 PM, Mark Rages wrote: On Sun, Feb 21, 2010 at 1:55 PM, Anthony Shanks yamazak...@gmail.com wrote: Some parts have mounting brackets that are square, not round. Yes I know I can make a equivalent circlular hole that would fit but it wastes a lot of space doing that and it interferes with routing. Have you talked to your board house about this? I wonder what happens if you specify a reuleaux drill in the fab drawing... How large is the square that you need? At some point, this is just another routed cut-out. You end up with a corner radius the size of the router bit in use, or else you can route a little past the corner to clear the corner of your square bracket. You would have to talk to your PCB house, but I'd be thinking along the lines of agreeing on what router bit is going to be used, and then adding a layer where the tracks represent the centerline of the routing operations. Wacky board shapes done by a CNC router are nothing new, routed cut-outs fall into that category. I'm sure your PCB house has a preferred way of getting the information. They will no doubt charge you the full freight, though, I don't know of any prototype service that does non-rectangular boards, although they might exist. -dave ___ geda-user mailing list geda-user@moria.seul.org http://www.seul.org/cgi-bin/mailman/listinfo/geda-user
