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Originally Posted by sage
Q: Using the example above - What happens if I don't want to wait around for almost two hours (112 minutes) to get the job done? If I believe the "720 rule" and the "anodizing time" as stated above then I can half the time required by doubling the current because the rule is based on amp-minutes i.e. instead of 4.5 amps per sqare foot we use 9 and get the same number of electrons over there in half the time. eg.
720 / 9 CD = 80 minutes * .7 = 56 minutes instead of 112 minutes
All things being equal (and please don't confuse the issue with any other factors (temp, bla, bla)
This will produce exactly the same results True? of False?
Sage
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This is a loaded question that cannot be answered true or false without an explanation. As far as, will these calculations produce good results, true they will. Now for the huge word, IF the setup is sophisticated enough to handle the temp and bla, bla you don't want to consider at this time.
Again with the cars. A high school kid walks in the shop and asks if a Holly 750CFM double pumper is a good carb and will it work on his small block Chevy. I can tell him yes it's a good carb and yes it can run on a small block Chevy but what I can't say is yes it will work on his small block without knowing what all is in the engine and the kind of exhaust. If he has a stock engine, I can tell him to go with a 600 or 650 CFM carb. Back to anodizing. Using a nice setup like Caswell sells they can use the 720 rule and a current density from 3 to 6 ASF(depending on what their power supply will handle) to get the same good results with any of the recommended current densities.
A big carb on a stock engine is only trouble. Using a current density larger than the setup can handle is also trouble.
These are graphs of test results from a man much smarter than I. He went by Fibergeek and helped me to understand the process.
http://forum.caswellplating.com/phot...user/5846/sl/f
http://forum.caswellplating.com/phot...user/5846/sl/f
http://forum.caswellplating.com/phot...user/5846/sl/f
PS: The 720 rule is not in oppostion to LCD anodizing. It is an integral part of CC anodizing.
SS