Design Blueprint: Spine Glue Optimum

Design blueprint derived from the source paper (DOI 10.5281/zenodo.24121349): This paper addresses a practical question in bookbinding: a paperback fails in the hands of its reader in one familiar way: a page, then several pages, come away from the spine. Using a self-contained computation from stated assumptions, the study evaluates the options across the range a small operation ordinarily meets and identifies the point at which the balance of cost, quality and material use changes. The headline findings are that thinnest passing mm is 0.3; strength at thinnest passing n is 70.7; glue cost at thinnest usd is 0.016; strength at 1mm n is 94; cost at 1mm usd is 0.053. The Status: DESIGN BLUEPRINT — SIMULATED, NOT MEASURED — NOT BUILT. All numbers are simulated values from the source paper's computation, deposited with this blueprint as compute.py and results.json. AI-use disclosure: Dave, an AI research system, assisted with the computation and drafting under the author's direction; author of record William Alexander Aldred.