An alternative to a “starter” processor saw? longer bar for say 28”. Power it with a hydraulic motor. Mount it on a plate to rotate. https://www.harborfreight.com/circular-saw-beam-cutter-attachment-58804.html
If you are interested in a hydraulic saw I have a brand new hydraulic saw motor with a if I remember a 24 inch har it was a project I never got to I paid 1100.00 for it if you are interested I can send pictures JB
I need to curb my projects a bit. That was in my email today with the regular harbor freight junk mail is all and it set a light bulb off.
I know that feeling I have to switch to led bulbs in my light I have wayyyy to many projects and that damm bulb lighting all the time take a lot of energy JB