K40 laser exhaust system

thingiverse

This is a quick and easy way to vent your K40 outside through a double hung window. I mounted the blower on the outside so that any leaks in the exhaust tube will be on the suction side and not blown out into the room. It's pretty simple to fabricate and put to use. NOTE: I purchased this 195 cfm 4" inline blower on Amazon for about $25. I had intended the blower to slide over the adapter. But I had a brain fart when drawing it up, and the blower slides into the adapter. It's no big deal though. It turned out that the ID of the adapter was just a little bit too large. Instead of wasting the first part, I just wrapped a couple of layers of duct tape around the blower flange and it fits perfectly. This was designed in Microsoft 3D Builder, so it would be easy to tweak the sizes if you'd like.