I vote Renaissance microcrystalline OFF the island.
The difficulty in reversing aged Renaissance microcrystalline wax has been reported in the literature, see: Moffett, Dana L. ‘Wax Coatings on Ethnographic Metal Objects: Justifications for Allowing a Tradition to Wane’, Journal of the American Institute for Conservation 35, No. 1 (1996): 1-7. The product was used routinely by museum conservators for over 30 years, and I have seen the results of aging. My personal experience with aged Renaissance brand wax on indoor, 1930s modern bronze sculptures is that it slowly cross-links and reacts with the substrate over time, during this process it turns disfiguring green obscuring colorful patinas and becomes impossible to remove in every combination of solvent. It needs to be removed before given a chance to age. The analysis reported by Dana Moffett indicated that the polyethylene wax component is the culprit. The Cosmolloid 80H ingredient seems so far OK and is sold by Kremer pigments and can be mixed and used as needed. I use Cosmolloid 80H for touch ups for localized repairs only for cosmetic reintegration of damage but do not advocate wholesale waxing any indoor object. But, perhaps the subject of waxing museum objects is a topic in itself. Dana's article is excellent to read. Shelley M. Smith Objects Conservator @conservagram ****** Unsubscribe by sending a message to [email protected] Archives through August 2016 at http://cool.conservation-us.org/byform/mailing-lists/cdl/ Archives from September 2016 onward at https://www.mail-archive.com/[email protected]/
