The Schacht Wolf Pup Double Back Beam adds a second warp beam to your Wolf Pup LT or Wolf Pup 8.10, mounted above the standard back beam and tensioned by its own friction brake. Two warps, two tensions, one project. This is the accessory that unlocks weave structures requiring differential warp tension. Warp pile and corduroy need the pile warp to feed slack while the ground warp holds tight. Bedford cord runs stuffer warps under their own tension. Piqué balances a face warp and a back warp at separate rates. Turned monk's belt and similar pattern weaves take up the pattern warp differently from the ground. Supplementary warp inlay, tension-driven seersucker, and doubleweave with mismatched shrinkage between layers all assume two beams. The common workaround on a single-beam loom, weighting individual bobbins off the back, is uneven and fiddly across the length of a real warp. The Double Back Beam is the engineered answer. The upper beam mounts to the existing Wolf Pup frame and stays installed; it is not a between-project swap. The added depth at the rear of the loom slightly increases folded thickness, worth noting if you store the loom folded. The 18 In width matches the Wolf Pup frame, and the maple matches the loom's hard maple construction with Danish oil finish. Compatible with Wolf Pup LT, both regular and Height Extender variants Wolf Pup 8.10, both regular and Height Extender variants Baby Wolf, Mighty Wolf, and the Standard Floor Looms each take their own frame-specific Double Back Beam. The four variants are not interchangeable. What's included Upper back beam in hard maple Mounting brackets for the Wolf Pup frame Independent friction brake assembly with cord and ratchet Apron bar and apron cords for the secondary warp Mounting hardware Specifications Weaving Width: 18 In Tensioning: Independent Friction Brake Material: Hard Maple, Danish Oil Finish Weight: 10 lb Compatible accessories Wolf Pup Loom Trap Wolf Pup High Castle Tray Wolf Pup Raddle Wolf Pup Sectional Beam Wolf Pup Stainless Steel Reeds