This is the craziest joinery system I've ever seen. Lamello's Invis system of knockdown fasteners consists of male and female parts that are sunk into your workpieces-to-be-joined. Once the pieces are lined up, a magnet inside of a plastic box is then attached to your drill. You spin the drill near the fasteners, and the screw in the male part starts turning. Here's a demo of a guy using it to attach stair treads:
As you can see, the system relies on the counterbores being precisely perpendicular to the surface. While they recommend using a CNC machine for this, it can also be done (a bit more laboriously) using their pin-and-jig rig: Injection Molding Mold Making
It seems quite a bit of work to go to, just to get knockdown fasteners that are invisible, but I guess it all depends on what your application is and how often you'll be disassembling your piece. What I'd love to see is a work crew assigning the new guy to take something apart using the system—when he's got no idea where the fasteners are.
so it's an blind joinery insert, like an screwable minifix?
Hasn't this been around for, like, 20 years or so? It always scared me. I can imagine 20 ways it could get stuck and be impossible to remove. Which is like a lot of other blind jointery, I guess, but it dangles the idea that it might be possible to disassemble in front of you....
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