Crowie, you are searching for excuses... my 3D printers have always been in a spare room in the house.  I don't print  enough or hang around for hours sniffing the plastic.
As for a CAD package... all you need to learn is the basics of any package to get it operational... and often what you may need will already be designed (existing STL/G-code).

 Fotodog 
 commented about 1 hour ago 
new
These look very useful Duckie. So sorry to hear that your pecker is failing…
They (90°) are easy to make out of timber in seconds, however, when it comes to angles, 3D printing is easier than hand made.

Not as sorry as me 'dog...

If your first cut is too short... Take the second cut from the longer end... LBD