Only bonds backed by a manufacturer's substrate list or well-established adhesion chemistry, filtered for how stiff or flexible the joint needs to be. Mark what's on your shelf to see what you can already do and what to buy next.
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Each item's count is how many material pairs it would add as great bonds that nothing on your shelf covers yet.
Evidence tags. “Manufacturer-listed” means the product's technical data sheet or product page names that substrate. “Established chemistry” means the bond is standard industry practice or follows from the polymer's solubility, but the specific product doesn't list it — mainly 3D-print plastics, which most adhesive makers don't test. Formulations change: check the current TDS for the exact product you buy, and test on your actual material before anything load-bearing. Primers vs activators. Primers here (770, 7239, AC77, AC79, POP) change the surface so CA can wet it. Activators such as Loctite SF 7452 or 7458 only speed the cure — useful for gaps and porous parts, but they don’t make low-energy plastics bondable. Any of these primers also works under a flexible CA (Loctite 4850 / 4860, Permabond 2050) when the joint has to flex.
Chemical bonding (purple) means the adhesive or solvent fuses with or reacts at the surface itself: solvent welds, cyanoacrylates and primers, epoxies, structural acrylics, UV and silicone adhesives. Surfaces must be clean, and fit matters more than texture. Mechanical bonding (copper) means the glue grips by flowing into pores and surface roughness and holds by the strength of its own film: wood glue, foaming polyurethane, contact cement, construction and craft adhesives, spray adhesive. Porous or scuffed surfaces help most. Nearly every bond uses some of both; the colour shows which one does most of the work.