Kinesis Advantage 360 Wide Bridge

Motivation

Without a bridge to lock the two halves together I find that one half tends to migrate away from me over the course of the day. This means my left hand tends to be a row too low and typing the wrong characters, or in the correct row, but extended farther than my right.  Sometimes one of the halves ends up rotating a little.

The bridge that comes with it is just comically small. It results in your arms angling inwards and your wrists compensating by turning outwards. This isn't good for wrist strain.

Installation 

Set this bridge _under_ the metal supports. It should be the same height as the little rubber feet. I suspect it'll work just fine going over too.

Hook the outer edge of one side's clip around the metal support, then snap the inner side. Repeat on the other half of the keyboard. This should require a small amount of pressure, and the resulting fit should be fairly snug.

Modification

I've included files for the conectors. They are mirror images for each other. The inside of the clip has a sloping edge to make it easier to slide open and snap into place.  Just place them on either end of a flat rectangle that's 3cm front to back, 2mm tall, and as wide as you need to have your arms extended straight from your sholders out to the keywells. Unless you want to do some funky joinery you'll probably have to compromise like I did and settle for a width that fits on your print bed.

Notes

If you look closely at the clips you'll see little triangular bits poking past the edges. Without these the print kept needing some minor filing after printing to make sure the gutter that the metal it fits into was unobstructed. Maybe it was just my old printer, but with these there was no cleanup needed.