Húslař Posted October 19, 2015 Report Posted October 19, 2015 With many thanks to Helen Michetschläger I would start this topic. http://www.helenviolinmaker.com/talks_articles_files/Saltpetre-BVMA_10.10.pdf Come together revive this legacy!
MikeC Posted October 19, 2015 Report Posted October 19, 2015 That's interesting. I notice in the title it mentions saltpeter. I've tried that and on some scraps of wood it looks good and others not so good.
Húslař Posted October 19, 2015 Author Report Posted October 19, 2015 That's interesting. I notice in the title it mentions saltpeter. I've tried that and on some scraps of wood it looks good and others not so good. I have the same experience - but it is not only about saltpeter (KNO3). The team of Mrs.Michetschläger found more chemicals (KNO2, Ammonium nitrate, Calcium nitrate, Potassium nitrate,...) and some organic material. In Koen´s primer is yellow colour and something another which turned wood to cinnamon tinge after UV tanning. So, we should reading, doing experiments, discussing... -and should it be a professional discussion.
MikeC Posted October 19, 2015 Report Posted October 19, 2015 yes, after reading the paper I get the idea that he prepared the solutions from various natural sources to it must have turned out to be a complex mixture. He would have been making a product who's purpose is to quickly simulate natural age. Seems like it must have worked well for that purpose.
Daniel P.N Posted October 20, 2015 Report Posted October 20, 2015 For anyone interested in the saltpetre production as described in the text, here is a short video step by step from soil to nitrates to gunpowder: "Gunpowder From Urine" https://www.youtube.com/watch?v=8wW5KR1pDxs
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