On Printer Bed Clamp Storage

I frequently switch between three different build surfaces on most of my printers.  Two of my three “go to” surfaces are magnetic, either PEI coated spring steel or flexible poly-carbonate.  The third surface I'm fond of is glass.

These days I'm favoring screw type clamps over binder clips or spring steel clips etc.  If I'm printing on glass, I tend to leave whichever of the other two surfaces I was printing on beneath the glass build plate I'm clamping on to bed.  I've been doing that, not just out of convenience, but because many of my glass build plates have an Ultrabase like side that I seldom use, so that surface faces down.  Many, if not all of the fake Ultrabase surfaced build plates sold these days have a semi sticky coating sprayed on them.  That was not the case for the genuine Ultrabase build plate that came with my Anycubic, nor the genuine Ultrabase I purchased for my CR-10 knockoff years ago.  The “spray on” sticky coating of the fake Ultrabase sticks hard to the magnet base I've got on the majority of my printers, so having a flexible removable sheet beneath the fake Ultrabase glass makes it much easier to remove.

When my glass build plates are not in use, I store them vertically on a bookshelf which is alongside the make-shift rack where many of my printers reside, but I usually leave the clamps for attaching the glass build plates just laying next to whatever machine I removed them from. 

In an effort to reduce clutter around my printers, I made this little storage box to keep my clamps with the machine to whom they belong while they're not in use.

This box is intended to be attached atop one of the lower 40x40 or 40x20 aluminum extrusions which most of my machines that use these clamps have, with two button head M4x6mm screws and T-nuts.  I have three odd-ball machines I use these clamps on, the Sovol SV05, the Anet A8, and the Geeetech I3.  I'll probably do something similar to this design for the SV05, but that mounts on the top front 20x20 extrusion but I'm not quite sure how I'll go about making something for the two acrylic framed machines…