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This Joinery System Uses Magnets to Activate Screws Captured INSIDE Your Workpiece

The tool doesn't even touch the work

By Rain Noe - December 2, 2015

in Hand Tools | DIY

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:

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Here's how it works:

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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:

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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.

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Carlos Alberto Riojas de los Santos

6 years ago

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so it's an blind joinery insert, like an screwable minifix?

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Jim Lewis

9 years ago

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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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