as I said before it has a lot of little flaws on the inside and the outside was machined by hand, I was holding the block against the (I don't know the name of the machine in english) "spinning abrasive thing" myself so it got pretty irregular, right now I'm building a tool to make it this process mostly automatic so the outside will be totally regular and flawless. . The inside will also look better when the molds are made more carefully, the walls, mainly the inside divisions are a little thicker than they should because, as I said, the mold was made in a hurry. Anyway when I say the inside will look better I mean it will have no flaws because it's supposed to be that rough, as you said, to increase turbulence. It should take some days to complete these tools I talked about. In short what I'm saying is: expect much better from the next "batch".
@V12|V12: I'm glad you liked it. It will cost $15 plus shipping, the cast process itself doesn't take too much work, what is really hard is the modelling part (as in making the molds). So the parts that take most of the time are modelling and machining. I'm not sure yet how many units I can produce in a week, I would guess aroud 16 now, this number will be much bigger once money starts to get in and I start updrading the machinery.
Thanks
Bruno Facca
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