S3S (Surfaced Three Sides) milled lumber is expertly planed on the top, bottom, and one edge, providing a smooth surface and a straight edge for easier handling and precise joinery. Perfect for projects requiring clean lines and consistent dimensions, S3S lumber is ready to use or customize further. Available in a variety of wood species and sizes, it’s a reliable choice for professional and DIY applications alike.
We carry aromatic cedar plywood in a 1/4″ thickness. This plywood is available in a veneer core.
In rustic or knotty grades of lumber, there will be a percentage of degrade during the milling process. Some knots may shake lose and/or fall out during the milling process. Mason’s Mill is not liable for these defects in moldings produced from knotty grades of lumber.
Mason’s Mill and Lumber will not be responsible or issue a credit for any cup, warp, twist or splitting that occurs in any custom cut Fir or Cedar boards or beams. These issues can be present in material cut from larger beams and timbers and need to be accounted for by the buyer when determining if Fir or Cedar is appropriate for the intended application. Cedar and Fir products will typically have knots.