If like me, you have grown tired of dust, shavings, bits, pencils, et. al. ending up under your machine, and if like me your arms are not 1/2" diameter so as to be able to reach under the machine, you may be pleased to know that adding a dust skirt was surprisingly easy.
I made mine using plastic restaurant floor-to-mat transition strips, but it became obvious to me that any semi-stiff rubber or plastic strips would work.
Front/Back: At the front and back, it was just a matter of unbolting the rails (not sure what they are called or used for, but I’m referring to the steel angle irons wit the tapped inserts). Then just sit the skirt in place and reattach the rails capturing the skirting material between.
Sides: I had thought the sides would prove difficult given all that is happening on the sides. But I was pleasantly surprised to find that there is a 1-2mm space between the cross members and the side rails. I was able to just jack the side up, brace it with a piece of 2x material front and back, slip the plastic strip in the aforementioned gap, and upon lowering the machine, gravity ant the top of the bench did the rest. Repeat on the other side and BAMMM!!! a dust skirt all the way around!
Thus far, it is working better than I had hoped. After multiple hours of making projects (but sadly also a lot of firewood and wood chips - ah the learning curve 
), I took a flashlight and took a peak inside through one of the openings at the back corner, and there is not only an absence of bits and parts, there is very little, if any sawdust.
One note for your benefit, if I were to do it again, I would complete the sides FIRST. Because it is necessary to lift the side to place the skirt material between the cross members and side rails, it has a tendency to pinch and buckle the far end front/back skirt. Depending on what material you use that may or may not prove to be problematic. By doing the front and back AFTER the sides, you can eliminate any such issues.
if anyone from Inventables is reading this, please consider adding skirting to your future machine production. The machine sits too low to the bench top for a practical cleaning solution, and when those bits roll under the bed it is… well… let’s just call it ‘frustrating’. Yes, one can do like most of us do or have done, which is to say use a squeegee attached to a broom handle, and/or a magnet attached to a broom handle, but doesn’t it make sense to eliminate a needless problem in the womb?
