Stop in for a cup of coffee

Looks like the same one we had at the park. Pretty good. VaFo had the simpler version.
In either case get the snap lines right before you start cutting.
get a rip blade.
And if it starts slow down, look for a loose bolt - dont ask me how I know...

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I think its fine for boards and slabs for your own use. That's a door jamb there.
If you're selling, find someone with a Woodmizer or similar, for a lot less waste.