You have misunderstood their rules. If they drill up to 5mm, above 5mm they will instead use a small routing bit and rout out the larger hole. You can have any hole size / circular profile you require.
All the PCB houses I've used in the past allow for through hole plating, and the final hole size is the size given in the gerber. Best Regards, Brian Sidebotham. On 28 February 2010 21:53, marcmendezbermond <marcmen...@free.fr> wrote: > F..k ! > > I just checked Olimex (olimex.com) technical rules for PCBs and they can only > drill up to 5mm which does not give much margin for M5 screws :( I thus have > to find another way to do this. > > What do you think about defining a 1.5mm hole pad and drill myself the PCB at > 5.5mm ? > > Best, > M. > > --- In kicad-users@yahoogroups.com, "marcmendezbermond" <marcmen...@...> > wrote: >> >> Thanks David ! >> >> Yep, those are large 47000uF electrolytics. But they will be mounted on the >> chassis and the board comes on top so there wont be that much physical >> constraints on the PCB. I have checked on some sites and metallization is >> coming as a chemical process after drilling the board. Thus some margin >> should be taken as a 5mm hole will become 4.9 after metallization (unless >> you specify your holes diameters are meant AFTER metallization, but 5.1mm >> would not be standard meaning $$$) >> >> About the libs, I will work on a complete lib for the parts I have selected. >> Longer but safer :) >> >> Thanks, >> M. >> >> --- In kicad-users@yahoogroups.com, "David" <david@> wrote: >> > >> > >> > >> > --- In kicad-users@yahoogroups.com, "marcmendezbermond" <marcmendez@> >> > wrote: >> > > >> > > Hi all ! >> > > >> > > I am looking for some footprint libs for large screw-terminal >> > > electrolytic capacitors. After searching the usual sources of KiCad >> > > libs, the situation is no better :( That would be great if you could >> > > point me to some sample libs that I would be able to modify to match my >> > > components. >> > > >> > > Also, I was wondering how PCB companies would realize the holes for my >> > > terminals. That won't be made as a metallized hole because of the radius >> > > (I guess 5-6 mms) but a simple hole, right ? Should I pay some attention >> > > about the capabilities of the company that will be in charge of my >> > > boards ? >> > > >> > > Thanks, >> > > M. >> > > >> > Hi, >> > Are these meant for mounting on a PCB? If the capacitors are the large >> > capacity types that you find in power amplifiers they are normally chassis >> > mounted. Heavy capacitors wil cause the board to bend and put it under >> > stress. >> > If you must mount it on a pcb you can very easily design the footprint in >> > Kicad. Don't know if a fab house will make the pcb for you though. >> > >> > David. >> > >> > > > > > ------------------------------------ > > Please read the Kicad FAQ in the group files section before posting your > question. > Please post your bug reports here. They will be picked up by the creator of > Kicad. > Please visit http://www.kicadlib.org for details of how to contribute your > symbols/modules to the kicad library. > For building Kicad from source and other development questions visit the > kicad-devel group at http://groups.yahoo.com/group/kicad-develYahoo! Groups > Links > > > >
