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Aliexpress neodymium magnets and filter by size
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If you're routing some magnets in to the desk why don't you use a steel layer underneath the worktop?
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surface is valchromat
Idk what this is like, but regular mdf always has a smoother side. If there is a smoother side imo you want that face down because it will help to create a vacuum and increase adhesion.
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Why magnets? Could you use some velcro strips? Easy to apply/remove, will level fairly flat, cheap and significantly less effort than magnets... or am I missing something?
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It feels like double sided tape would be a lot easier unless you are planning on removing it a lot.
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What about rebating the magnets into the lower surface of the sheet and glueing them in place so they sit flush.
Then for the desktop, rebate some steel pieces flush with the surface.I'm not sure you want magnets on both the table and the topper.
Or, glue some dowels into the top piece and drill some holes for them to locate into in the desk?
Or use a sheet of rubber as your desk cover?
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hugo7
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@CYOA
Magnets
I want to stick magnets to a sheet of 8mm thick material so I can have it as a permanent but removable desk surface. I don't want to screw the magnets into the surface because I imagine, being 8mm thick, it would rip or damage when I pulled them off. I don't want to see any screws on the clean side of the surface.
I could probably keep it simple and just use some self adhesive magnetic tape but I worry it'd fail over time and getting it back in the same spot would be a pain.
So am imagining some kind of enclosure (surface is valchromat so potentially an enclosure of the same - whatever will bond to it with no chance of it falling off ever with the right glue), then screwing the magnet into the enclosure.
So the magnet is screwed in and the enclosure is bonded to the main surface. Then the main desk has matching magnets routed into it so when the surface sits on the desk it's all flush and seamless.
Anyone got any thoughts on what material of magnet/brands/what amount of pull I'd want (I'd say I'd want at least 4 magnets, possibly 6 - one on each corner and one in the middle (surface is 1000m x 2000m x 8mm).
Given the 8mm thick material, I'm not expecting great big thumb size things sticking into equivalent holes in the desk so all got to be fairly tiny.