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Not exactly easy to get them that long, slim, precise and with good finish ....I know I can't do it with what I got - but 'cheating' is also acceptable - like using a hone to get the required finish and exact diameter .... so that's what I do
At least you found out why there is a difference One must admire your patience / perseverance regarding this project They say that the more tribulations - the bigger the satisfaction when you succeed -> I really hope that you get reason for a big happy dance