US Patent 11685076 Method and apparatus for milling boards and flattening slabs

The present disclosure provides an apparatus, method and kit to flatten wide boards with an apparatus. The apparatus comprises two sets of rails, one set spanning laterally and the second set spanning longitudinally. The second set of rails is operative to move along the first set of rails by use of short members attached to the second set that interface with the first set of rails. Then, a carriage is operative to sit on top of the second set of rails and move along them. This is done by the carriage arms engaged on the second set of rails.