Originally posted by Stazi: Those "knobs" are the left over risers from the casting process. Risers are holes in the casting that allows air to escape when the molten Al is forced in.
thats what I thought! So it would be "safe" to [carefully] grind them out?
[sorry when you spend that many hours grinding something, you have alot of time to question everything]
yes... I am a cougar owner trolling on your board.
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