Premier Wonder Grinder Help
Posted in: Tech Help, Tips, Tricks, Techniques
Tim You are correct in that HDPE can take 110C or more, however one of it's less useful properties is its high thermal expansion cf. other types of plastic. This is a know issue in close tolerance bearing surfaces, like believe it or not knee replacement joints! Sit some with a particular style of hinged bushing total knee replacement in a hydrotherapy pool for too long and the knee gets tight! Perhaps the clearances close enough to bind the wheels if you run up to 64C. I know commercial conching post refining can use brief high temp but what does the stuff from your Wonder grinder taste like? I'd be concerned about driving off the flavors I need to keep as well as the off tastes if I ran that hot for long?
Well, it looks like Erin pointed out that the plastics are made from Delrin. I can tell from experience with that material that it doesnt expand/contract with heating very much at all.
As for the flavor of the chocolate that got up that hot, it was good. This was a 2 ingredient batch that was being refined and ended up by getting a little more bitter/cocoa flavors and some of the more delicate notes were cut out. I cant say it was bad or good compared to normal, this was the first real batch like that with that percentage (77%) that I've made. So I really have nothing to compare it to.
After noting the higher heat though, I did realize that I was kind of taking advantage of the higher sheer power of the Wonder grinders and adding things a little faster than I would in, say, my Santha. So that may be the sole reason it got quite *that* hot. Generally, if you're more careful and steady about adding the ingredients, the friction would be limited and thus the heat.

