I found this neat little piece of hardware on BangGood.com Do you think it

I found this neat little piece of hardware on BangGood.com
Do you think it will fit our K40 stock tubes?

http://www.banggood.com/CO2-Laser-Tube-Support-Stand-Holder-Adjustable-50-80MM-p-965906.html

60-90mm I think most 40W tube are 50mm you will need a way to center it.

Nice find. But its a bit bigger.

Here’s one that claims 50 to 80mm: http://goo.gl/lW9Jr2

Although it shouldn’t be too hard to 3D print one

you could try this http://www.thingiverse.com/thing:420853

I’ve already tried that, the base is too big to fit in the k40