From Homestar Runner Wiki
The Saw Mill is a place where The Homestar Runner and Old-Timey Marzipan were trapped at by Old-Timey Strong Bad. It's located somewhere near or in a forest and has a conveyor belt with a buzz saw at the end. In Sickly Sam's Big Outing, a video of it was briefly shown by mistake after Sickly Sam burned the film. It is unknown how The Homestar Runner or Old-Timey Marzipan got there or what eventually happened to them.
Debut: Sickly Sam's Big Outing