This DIY jig will allow you to cut small or large crown as easy as base molding. Doesn't matter what the Spring Angle is!
https://www.paulstoolbox.com/form

http://www.crossxstep.com/
https://www.worx.com/work-support.html
https://www.rockwelltools.com/drills-...
FastCap Mandrel
http://www.fastcap.com/estore/pc/show...
FastCap Glue http://www.fastcap.com/estore/pc/Adhe...
RYOBI Cordless Nail Gun https://www.amazon.com/Ryobi-P854-Cor...