Maybe I am misunderstanding but I think Michael is actually asking about a beveled edge where the vertical edge (.062" thick) is not perpendicular to the top or bottom surface of the board, e.g., the bevel used on edge connector fingers. He is talking about a bevel being done on three of the four sides or edges of the boards. What it appears the responses are talking about is breaking the four sharp 90 degree corners of a square or rectangle board by adding what is commonly called a chamfer, typically 45 degrees as William states.
As an FYI, adding a radius to the four corner actually works better than a chamfer but then again I don't think that is what Michael is asking.
If it is a true bevel being required on three of the four edges, yes it is doable but would probably require special CNC machining by the board manufacturer due to the small size of your board. Possibly rout the profile for three of the four sides leaving the side without the bevel intact in the manufacturing panel. Then perform a CNC bevel on the three routed edges. Final step would be to rout the edge without the bevel.
Hope I understood your question correctly and explained a solution to your question.
Regards,
Scott A. Bowles
Staff Engineer - Printed Circuit Designer IV
Engineering Services
L3 Fuzing & Ordnance Systems
3975 McMann Rd.
Cincinnati, OH 45245
Office: 513-943-2483
Alternate: 513-943-2499
Mobile: 513-208-9009
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-----Original Message-----
From: DesignerCouncil [mailto:[log in to unmask]] On Behalf Of Karl Bates
Sent: Thursday, September 18, 2014 11:12 AM
To: [log in to unmask]
Subject: Re: [DC] Chamfered PCB
It's also a good idea to chamfer the edges to minimize damage to the corners of the board, and it keeps it from damaging the shipping / packaging container or plastic shrinkwrap.
Karl
> Date: Thu, 18 Sep 2014 11:04:42 -0400
> From: [log in to unmask]
> Subject: Re: [DC] Chamfered PCB
> To: [log in to unmask]
>
> Chamfering the 90 degree corners of a board is a good idea for a number of reasons.
> One of the most obvious is to protect workers from hand injuries.
> Often it makes the assembly simpler to assemble... and sometimes they are used as a 'lead in' to a housing that requires sliding the board into slots to assemble.
> Most common is 50 mils by 50 mils, a 45 degree chamfer.
>
>
> William Brooks, CID+
> Senior MTS (Contract)
> 2747 Loker Ave West
> Carlsbad, CA 92010-6603
> 760-930-7212
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>
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>
> -----Original Message-----
> From: DesignerCouncil [mailto:[log in to unmask]] On Behalf Of
> Kuczynski, Michael
> Sent: Thursday, September 18, 2014 7:53 AM
> To: [log in to unmask]
> Subject: [DC] Chamfered PCB
>
> I've got a request if a PCB can be chamfered. My initial inclination is yes, but I've never been asked.
>
> What makes this difficult is the small size and one side in rounded.
>
> PCB is 35.95mm long X 12.10mm wide (standard 1.57mm [0.062in] thick)
>
> Chamfer would be 45 or 55 degrees all the way around, except the one width (12.1mm) side would be straight.
>
> Shape is pcb is like this:
> _
> U
>
> SIEMENS
> Michael Kuczynski Healthcare Diagnostics Inc.
> Product Eng. II CID 511 Benedict Ave.
> 914-524-3118 (Ph) Tarrytown, NY 10591
> 914-524-3322 (Fax) Mail Stop P25-1-C
> [log in to unmask]
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