[sdiy] PCB faceplate large hole creation?

[Roman Sowa]

AFAIK JLCPSB does not use laser cutting, not even laser drilling, as 
they do not offer HDI boards where laser cut vias are common. All boards 
are milled with router bits.

Every PCB manufactures has detailed description of their capabilities 
and requirements, that nobody reads. Usually all manufacturers drill up 
to 6mm diameter, and anything above is milled. You can draw anything in 
Keepout layer as long it is doable with 2mm mill bit (no sharp inside 
corners) and they will cut it without bothering you asking what your 
intention was. And without increase in price.
I used to add mechanical layer to show them how nice I am and want to 
minimize their precious engineering time, but turns out they rely on 
keepout layer mostly to do all the routing.

There is free tool out there - gerbv.exe, search the net. I check all my 
designs with it before sending. And whatever it shows, is always the 
same in real thing from JLCPCB. Even if online JLCPCB Gerber viewer gets 
totally confused and shows rubbish.

Roman

W dniu 2021-05-27 o 17:23, Mike Bryant pisze:
> Depends on who is making the PCB.  JLCPCB use a laser cutter to cut any shape in the PCB.  I had some large fan sized holes with crosshairs in my last order.  Best to use the tool of the PCB manufacturer for something like this though
> 
> -----Original Message-----
> From: Synth-diy [mailto:synth-diy-bounces at synth-diy.org] On Behalf Of doug at synthark.com
> Sent: 27 May 2021 16:05
> To: Synth-diy
> Subject: [sdiy] PCB faceplate large hole creation?
> 
> I'm building a jack faceplate, which requires large holes (MIDI, USB).
> While I can create the holes in my PCB tool (DipTrace), it flags most of the holes as DRC violations (too large to drill, > 0.2"), which makes sense, since PCB fabs probably aren't setup to drill large holes.  I'm guessing my best solution would be to CNC the PCB after it's fab'd (since the USB hole is not circular).  Can anyone confirm or provide a better solution?
> 
> Thanks,
> --
> Doug Huseby
> http://synthark.com
> http://synthark.org
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