Final answer:
When ripping warped lumber, the bow should be turned upward for better control and to minimize friction, thereby achieving a straighter cut.
Step-by-step explanation:
When ripping warped lumber, the bow should be turned upward, which means the wood's natural curve should face away from the saw table. This positioning allows for better control of the lumber as it feeds through the saw. By placing the bow upward, it reduces the chance of the wood rocking or moving during the cut, which can help in producing a straighter cut. Moreover, it limits the amount of surface area in contact with the saw table or fence, minimizing friction and the potential for burning or binding during the ripping process.
When ripping warped lumber, the bow should be turned inwards or towards the blade.
This technique helps to counteract the effects of the warp and ensure a straighter cut.
For example, if the lumber has a concave side or bow, you would position it so that the concave side is facing towards the blade.