Lascaux Adhesives in Objects Conservation: Three Practical Case Studies on Leather, Skin, and Entomological Specimens

ABSTRACT Although BEVA 371 film is almost synonymous with leather and skin repairs because of its flexibility and ease of use, Lascaux adhesives 498HV, 303HV (formerly 360HV), and 498 20-X have also been used for years on these types of object treatments with successful results. Not only do they adhere well to leather and skin, but also to entomological specimens and other related organics. Lascaux adhesives are easy to handle, remain flexible when set, and adapt to different situations. This article explains multiple application methods: direct wet-application, as a heat-activated and solvent-activated coated lining, pressure-sensitive tape, and as a bulked adhesive shapeable fill material. Because original substrates are often thin or associated with areas of loss, suitable lining materials and bulking agents are also reviewed. Three case studies – a vegetable tanned leather doctor's bag, pinned butterflies, and a taxidermy golden eagle – demonstrate how the materials can be used in multiple treatment steps.