For a bucksaw …. the design I like after looking at Utube & Mors is more of a hybrid. Use one inch pvc electrical conduit for the ends. In the middle use a piece of 4 quarter maple mortise and tenon to the Pvc. Wedge the ends for easy takedown. Instead of a 36 inch blade i’d get a 42. Thats’s a bit bigger but you can make it a push pull two person bow saw and save a lot of labor. Cut Cut Cut at least a cord per night outdoors in zero weather.
And be sure to add wood cores to the pvc ends for the screws and tensioning parts. Pvc is tough but not as tough as hardwood. If you can find ironwood it would probably last forever.