Rip saw machine has variable feed optional or can be designed for.
Wood ripping machine.
Ripping wood means feeding the material along the grain of the wood through the blade to make a cut along the length of the wood.
You can find old monsters for a reasonable price.
Ripping wood on the table saw is probably the action you ll be doing the most.
The table saw makes quick and accurate work of milling wood down to workable sizes.
If the 8 4 bows as it being ripped on the tablesaw then most likely it is tension in the wood and the same thing would happen if ripped with a bandsaw.
If you are looking at buying a machine dedicated to ripping lumber even up to 3 look at a ripsaw.