ipping boards or slabs without a straight reference edge, such as roughsawn or waney-edged material, is unsafe. And if you don’t have a jointer or band saw, creating that reference edge is difficult without a convenient solution, such as these (item 67042; $59.99) from . When fastened to a straight-edged guide board/clamping base, these cast-aluminum clamps with removable, adjustable board supports can grip boards up to 40" long
