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by Kirby64 912 days ago
Explicitly a magnet sheet does NOT ruin Beacon and is the preferred magnet type for sticking down build surfaces. The only problematic magnets are point magnets that are very strong, as the magnet field can penetrate the surface of the material being scanned and impact the readings (but only at that point).

It sounds like what you're describing is sheet magnet that is coated in PEI, but I highly highly doubt that is what you have. The magnet is attached to the frame, not the material that you print directly on.
1 comments
stavros 912 days ago
> As long as you have a spring steel sheet and don’t have those large discrete magnets (either lots of tiny round magnets or the sheet magnets) it works just fine

Hmm, from this I understood that a sheet magnet will ruin Beacon.

I don't have a magnet that's coated in PEI, I have a magnet sheet on the bottom (stuck to the big bed plate), and, on top of that, a thin steel plate (the one you bend to pop the print off) coated with PEI on each side (smooth/rough PEI). If the magnet sheet under the steel plate doesn't mess with Beacon, I'm going to buy a Beacon right now.

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Kirby64 911 days ago
See their FAQ documentation:

https://docs.beacon3d.com/faq/

What you’re describing is the ideal material stack up for beacon. Only thing you may need to do is load a different nozzle offset for the smooth vs rough side, since the thickness of the PEI is probably not the same.

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stavros 911 days ago
I did have a look, all it says is:

> Magnetized rubber sheets have a high number of poles, and result in no detectable artifacts.

Which kind of sounds like what I want, but doesn't actually say "you'll be fine if you have a magnetized rubber sheet", "no detectable artifacts" might very well mean "the sensor doesn't detect your bed".

Thanks for the clarification, this sounds great.

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Mashimo 911 days ago
Tons of voron and Rat Rig use beacon. They mostly run thick metal plate with magnet sheet on top. So you should be fine.

You can also join one of the many discord servers (Rat Rig probably has one) and ask there for details

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stavros 911 days ago
I think I'll get one regardless, all the reviews seem amazing, thank you.
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