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Re: [LUG] OT: CCT board etching.
- To: DCLUG ML <list@xxxxxxxxxxxxx>
- Subject: Re: [LUG] OT: CCT board etching.
- From: Brad Rogers <brad@xxxxxxxxxxxx>
- Date: Wed, 20 Jul 2016 09:28:12 +0100
- Delivered-to: dclug@xxxxxxxxxxxxxxxxxxxxx
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On Wed, 20 Jul 2016 08:52:42 +0100
Tom <madtom1999@xxxxxxxxxxxxxx> wrote:
Hello Tom,
>automating that should help. Gordon mentioned registration for double
>sided stuff but that shouldnt be too hard to work out...
Easy; Make a registration mask (a hole in each corner[1][2], say 1mm
dia) and etch that first then drill. Make a front and rear mask that
include the registration holes to allow you to achieve the correct
alignment.
[1] These holes are often later drilled out to accommodate mounting
pillars.
[2] They don't have to be the corners of a rectangle. Sometimes it's
helpful to have one hole offset, since that makes it harder to flip an
etch mask inadvertently.
--
Regards _
/ ) "The blindingly obvious is
/ _)rad never immediately apparent"
Black man got a lot of problems, but he don't mind throwing a brick
White Riot - The Clash
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