On 1/10/2016 10:46 AM, Nick Østergaard wrote: > 2016-01-10 16:09 GMT+01:00 Mário Luzeiro <[email protected]>: >> >> "It would also be good to have an option to crop everything outside the >> board edge so that in files such as the pic_programmer demo we do not have >> silk prints magically floating in the air." >> >> I was thinking in the situation from a point of view of kicad as a CAD tool, >> it shouldn't hide from the user what it is wrong and may need a design >> review. So user should clean as much as possible the garbage outside the >> board, if not, it will be shipped in the gerber files. >> >> I know that in the PCB process that garbage and mistakes will be removed / >> or reproduced, but I was thinking that 3d-viewer should not lead the >> designer (special the less experienced people) in something that they expect >> because they see it that way on 3d-viewer but was not properly designed. > > So by this reasoning, it should show you how the pcb will look like > when manufactured... But I would like to see a render option to make > it cut everything that is outseide the board, such that I can enabled > and disable that feature as I see fit.
Agreed. Please make this optional. > >> Anyone else on feedback on this? >> >> Mario Luzeir >> >> ________________________________________ >> From: Cirilo Bernardo [[email protected]] >> Sent: 09 January 2016 21:44 >> To: Mário Luzeiro >> Cc: [email protected] >> Subject: Re: [Kicad-developers] T-shapes, castellated pads, cut-outs, >> slots.. and 3d-viewer >> >> For the first 2 links: This shape cannot really be represented in kicad >> except by cutouts - but we have no mechanism to separate plated from >> non-plated cutouts. In the first link we cannot use simple slots to >> represent this shape because the wider slot would have a large rounded end >> which extends beyond the narrow slot, but in the case where the slots are >> the same width I see no problem with allowing it since the designer may >> actually want that. It will be up to the designer to check the final design >> before production anyway. >> >> For the castellated edge (amazonaws link), this is becoming more common. I >> would expect the board edge to cut through the pads/holes in pads to produce >> the expected castellation. It would also be good to have an option to crop >> everything outside the board edge so that in files such as the >> pic_programmer demo we do not have silk prints magically floating in the air. >> >> In your last link someone did a bad job of attempting a castellation. This >> is not really a problem for kicad, it is a problem for the designers and >> fabricators. The only bad geometry which I would not allow is a cutout/drill >> hole which intersects the board outline at a single point or one which >> intersects at two points to create two separate bodies. I would not allow >> such geometry because it's an annoying case to handle even in MCAD software >> and makes absolutely no sense from the manufacturing perspective. In the >> case of not creating two separate bodies - kicad will yield awful results in >> such a case anyway because it is somewhat inflexible and requires a single >> body outline. This is one reason why I'd like to have a 'board outline >> layer' and 'cutout layer' rather than the single 'edge cuts' layer. >> >> - Cirilo >> >> >> On Sun, Jan 10, 2016 at 1:19 AM, Mário Luzeiro >> <[email protected]<mailto:[email protected]>> wrote: >> Hello all, >> >> Related with the 3d-viewer refactoring, >> how is kicad handling this (subject) cases and how it should be represented? >> >> The question is, what is supported and should be correct represented and >> what is not supported and should be... correct represented. >> >> So, For example, if we do a t-shap castellated with segment pads, should the >> slot be subtracted or should 3d-viewer draw the two pads to user will know >> that there is something wrong there and will not be mistaked? >> >> http://www.hitech.com.mk/Resources/Images//PCB/Tech/t-14.JPG >> http://i.stack.imgur.com/qyvAX.jpg >> >> Another case: >> >> If a user make a plated hole but it is cut half by a cut-outline (a hole) >> how should it be represented? >> Should I draw the plated hole, or should I subtract the cut-outline to it? >> https://kicad-info.s3.amazonaws.com/286e33b6746414c43e274332cae0bb34de1693c4afb.jpg >> >> >> IMO, if it is allowed and the way to manufacture it, then I should make the >> "Boolean operations". >> If that is not allowed and not possible to manufacture. then I should not >> "make any operations" and show it as-is. >> >> So user will see in 3d-viewer that it does not look good: >> http://i.stack.imgur.com/OwZaI.png >> >> >> Also, what are the things you have in mind in future to support this cases >> (i.e.: is there anything I can do so it will work in future?) >> >> Thanks all! >> Mario Luzeiro >> _______________________________________________ >> Mailing list: https://launchpad.net/~kicad-developers >> Post to : >> [email protected]<mailto:[email protected]> >> Unsubscribe : https://launchpad.net/~kicad-developers >> More help : https://help.launchpad.net/ListHelp >> >> _______________________________________________ >> Mailing list: https://launchpad.net/~kicad-developers >> Post to : [email protected] >> Unsubscribe : https://launchpad.net/~kicad-developers >> More help : https://help.launchpad.net/ListHelp > > _______________________________________________ > Mailing list: https://launchpad.net/~kicad-developers > Post to : [email protected] > Unsubscribe : https://launchpad.net/~kicad-developers > More help : https://help.launchpad.net/ListHelp > _______________________________________________ Mailing list: https://launchpad.net/~kicad-developers Post to : [email protected] Unsubscribe : https://launchpad.net/~kicad-developers More help : https://help.launchpad.net/ListHelp
