Re: Area question
I can see where a simpler part could be done on grid paper but most the parts I have done with the amount of complexity as your sprocket mount I have had to sit down with a pad and pencil to trig the majority of it out to get a rough SA.
As far as dyeing there is no benefit for the thicker coating. As for durability, it will depend on how it is grown. I run at the bottom of the range on my tank temp and higher in the CD range to get a smaller pore size. I normally don't go past 1 to 1.2 mil on the coating.
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