Solder stencil

I could have sworn there was a video I saw of Stephen Hawes (of Opulo) trying and failing to make a solder stencil, but now I can’t find it.

Did I hallucinate it? Did anyone else see it?

I’m asking because thin stainless sheet is maybe an interesting stretch goal…

Vaguely recall he used fiber laser (EDIT: with card stock). But, that’s so 2024 though… When are you going to add a Rack Robotics Power Core based EDM LR4 mod? Plunge (controlled with responsive fast auto retract-probe custom firmware…) into CNC’d shallow purified water tank, instead of (bandsaw like) wire feeding.

See ~9:30 and comments (e.g. CO2 or 3D printed) for various approaches Stephen and community tried https://youtu.be/5G7jBCK90O0?si=MUxsgfsYrEfaQV7H am hoping he has update soon.

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This is why I’m asking. Although, similar to laser, a stiff CNC machine is overkill for EDM. Maybe EDM could mount onto Opulo directly even. Opulo uses a modified version of Marlin apparently.

Another application of EDM would be die-sink EDM where you need a CNC to make the dies, and then there’s a natural fit with V1 machines. If you already have a water bath for EDM then you already have the setup for milling graphite.

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Yeah, would only make sense because you have a dust covered LR3 with kinematic mount already, and/or, are wanting to plunge EDM larger project(s)?

Wonder if their short detecting feedback hardware/software needed for regular EDM, can be used to do fast Z-mesh detection avoiding need to surface or bolt down stock material? Could be an advantage over laser (without mesh detection)?

Opulo looks neat, I keep failing to rationalize getting one, despite frequently trying. I still don’t have a laser, which seems like something I should try before EDM. So, for now, I look forward to seeing who makes the first V1E EDM mod…

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Yes, they do short circuit detection as part of the EDM process and you can also put the device in probe mode so it acts like a touch probe detecting continuity without blasting the material away.

Maybe you could EDM the copper traces on a PCB, if you wanted it to be extra slow and without holes.