Carbon fiber dust isn't great for your lungs so if you have an indoor workshop like us, routing your carbon fiber underwater is the way to go. Not only does the water eliminate the issue of dust but it also helps cool the end mill and extend its life. The popular Dewalt 611 spindle inconveniently blows air downward, though, resulting in water getting thrown all over the room. This simple 3D printed attachment screws onto the bottom of the Dewalt 611 and redirects the downward airflow to prevent it from disturbing the water around your bit. Also, even bits without an up cut can fling water upward and into the router which this attachment prevents by creating a small "skirt" around the base of the router controlling the splatter.
Don't own a 3D printer? Help support us and purchase a splatter skirt on eBay: www.ebay.com/itm/332979226439
Dewalt 611 router: amzn.to/3hYofwv
Best carbide end mill for carbon fiber: drillbitsunlimited.com/116-06...
Splatter Skirt Thingiverse post (STL Files, extra info): www.thingiverse.com/thing:323...
Feeds n' Speeds (thicknesses 2-4mm)
Speed: 400-420mm/min
Depth per pass: 0.3mm
Note: For those of you asking "what submerged cut tray is that?" we designed and printed a custom tray that used 3D printed hold downs for cutting carbon fiber underwater. After extensive testing though, it became clear that the hold downs just weren't reliable enough so our new method involves creating a sandwich between a flat cookie tray, a piece of 1/8" acrylic (as a waste board) and your carbon fiber piece. Everything is just stuck together with 3M VHB adhesive tape and it works every time! See the attached photo for more details. Go hit the link above to our Thingiverse post for more info.