I normally cut tenons on a tablesaw, but today I tried cutting them on several bandsaws; with mixed results. I have three bandsaws, an 11" Shopsmith, a 14" Delta, and a homemade 16" (Woodgears plan). I setup a straightedge as a fence on each saw and tried cutting 1" long tenons on 3/4" x 1 1/2" stock. I used several different blades including a 1/2" x 3 Teeth, 1/2" x 4T, a 3/8" x 6 T, and a 1/4" x 6T. Each blade worked fairly well. However the 1/4" blade on the Shopsmith would 'wander' and I couldn't cut a straight line. These were Shopsmith brand blades and I tried another identical size with the same results. They were tensioned at the 1/4" mark on the saw. Other blades on the Shopsmith cut straight, and the blades on the other saws, (including the 1/4") cut straight tenons.
The Shopsmith brand blades are somewhat thinner gauge than the aftermarket blades. I'm not sure if this thinner blade would wander easier than a thicker blade but there's only a few thousandths difference. Also, I believe the Shopsmith blades are pretty decent.
Cutting tenons on a bandsaw seems like a fairly simple operation. Several woodworking articles have suggested the 1/4 x 6T blade for cutting tenons. Not sure why I can't get these 1/4" blades to cut straight. Any advice is appreciated. Also, for those that cut tenons on their bandsaw, what is your preferred blade?