So Fusion is an abject chunk of shit. You may have heard of this software mentioned by your "maker" friends because it's a "full-featured" CAD program from Autodesk, the giant of the industry and because they never do anything but tweak on STL files they pulled off of thingiverse. Speaking as someone who has spent eight months tweaking on files I pulled off of thingiverse, Fusion... well, there's a write-up there. Anyway, if you want to play with Big Boy CAD, you can buy yourself a license of SolidWorks for $3999 plus $1399 a year for support. I had it for free through community college but lookitthat it ain't 2018 anymore.
If you're an active or retired member of the military, you can get it for $40 a year.
Or, for some reason, you get it free if you're a member of the Experimental Aircraft Association.
So... some of us are entertaining unhealthy ideas because scope creep is our nemesis. This is the 4th link when you look up "BD-5 for sale."