True that.
20" 404" would be different. Not a lot of use for that bar for most people though. I'm good with 3/8" in whatever drive link is easiest to get through a 12x12.
I would do bigger but my cant stand was built with 8x8 10x10 cold start back in the day.
Your stand is built for bigger cants and other folks building stands now days. If someone else would like to do the testing.
I can do 4 12x12" stacked on mine. I don't think anyone wants to file a 91 or 105 dl chain for racing. It doesn't matter to me. I know I'm home around Christmas usually for a week or longer. I could work it in if there's no snow the whole time and get pine or hardwood cants.
HAHAHA...my smallest is a 84 DL!!!
The biggest I've done is a 141 DL...it didn't end up getting the "full treatment" lol