Export DXF - Edge_Top and Edge_Bottom - DLP 3D printer for PCB etching

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MarkEd
Posts: 5
Joined: 13 Feb 2016, 16:40

Export DXF - Edge_Top and Edge_Bottom - DLP 3D printer for PCB etching

#1 Post by MarkEd » 29 Jul 2020, 07:25

Hello

Please add ability to set "Edge Width:" to negative value(for example -0,05mm or -0,1) in "export DXF" - Edge_Top and Edge_Bottom layer.
This would be useful for PCB etching with DLP 3D printer.

Using DLP 3D printer for PCB etch - surprising results:
https://www.youtube.com/watch?v=-Qeq7ZgUOuE

My results:
Etching.jpg
Track and pads are to wide. Edge Width = -0,05 in dxf export would probably be perfect.
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Alex
Technical Support
Posts: 3477
Joined: 14 Jun 2010, 06:43

Re: Export DXF - Edge_Top and Edge_Bottom - DLP 3D printer for PCB etching

#2 Post by Alex » 06 Nov 2020, 03:30

We will consider allowing negative value in Edge Width but it seems counterintuitive in most cases therefore the software changes negative value to minimum positive one.

MarkEd
Posts: 5
Joined: 13 Feb 2016, 16:40

Re: Export DXF - Edge_Top and Edge_Bottom - DLP 3D printer for PCB etching

#3 Post by MarkEd » 15 Nov 2020, 13:50

It would be great if it would show up in the next version.
It is probably counterintuitive when milling, but it would do the job with UV exposure.

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Mishal21
Posts: 2
Joined: 02 Feb 2021, 10:25

Re: Export DXF - Edge_Top and Edge_Bottom - DLP 3D printer for PCB etching

#4 Post by Mishal21 » 14 Mar 2021, 03:26

MarkEd wrote:
15 Nov 2020, 13:50
It would be great if it would show up in the next version.
It is probably counterintuitive when milling, but it would do the job with UV exposure.
It's something I've considered but haven't done yet. I'm not sure if you planned it or not, but abating a coating of acid resist (aka black spay paint) with the laser and then dipping the board in acid would be much less expensive than using the laser alone. Lasers printerhow with more than 500mW become prohibitively costly, and copper is an excellent heat conductor.

You'll need to work out a way to match the two sides if you want double-sided boards. The unit is incapable of drilling holes.

You should be aware of the horizontal resolution. It's probably good, but it'd be a pain if you didn't have the requisite resolution.

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