I have been working on a project at work that requires cutting composite laminate with a small router and we have been experiencing issues with dust clogging the bearings on the router bits. So I jumped over to Fusion 360 and quickly designed this dust collector attachment to fit the laminate trimmer.
Then I jumped over to my 3d printer and printed it up. 3d printers are so cool! There were some print quality issues but I had intended to fiberglass over it anyway to add some strength and not have the print come apart along the print lines so those issues really were not a big deal. To glass over it I used 2 layers of 4oz fiberglass fabric with a UV cure polyester resin (so I have a finished product done fast!).
While I did model the part going all the way around the router base I had not fully decided how I wanted to attach it. I considered actually screwing it to the base but in the end I decided that before I put some new holes into the base I would just tape it in place and then if I really like it I will add a more elegant and permanent mounting system.
Once in place I got to cutting and it works great, I have it hooked to a Festool CT Mini and on shallow edge trimming it catches virtually all the dust and when doing through cuts it is getting probably 80% or more of the dust, which is way better than before.