RE: Carbon on glass with back exposure
Hi Marek. Currently I can only pour gelatin in at nighttime since the average daytime temperature is around 30C / 86F right now. But, since nighttime RH is around 80%, gelatin will take very long to dry. (Daytime RH is around 40-50%.) Please note that I don't have an airconditioned workspace. Anyway, I'll see how it goes... BTW, I've made a simple .xls file to calculate / interpolate exposure times under sun: http://loris.medici.name/sun_exposure_calculator.xls Those who are interested may donwload the file, see if there's any logical / mathematical error(s) + see if it works for them... Regards, Loris 4 Temmuz 2008, Cuma, 6:59 pm tarihinde, Marek Matusz yazmış: > > Loris, > I did not know about the local UV index value, should be quite helpful. > I find the making of carbon tissue quite fascinating and easy to do. Glass > is such a nice substrate for tissue as it stays flat and is quick and > consistent to sensitize. Contrary to what you think it goeas quite fast > once you get started. The limiting factor is how quickly the gelatin sets > at your condition. > The biggest think is use of jet dry detergent. It eliminates the bubbles > from the gelatin mix and allows to pour perfect tissue every time. > Keep us posted > Marek
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