I've never needed to use the coin trick in the past. I'm sure its useful on some bars. Probably worth noting though that Jan uses it on a steel stem. Might be less favourable on alu stems.
Jan uses it on a steel stem. Might be less favourable on alu stems
It works on aluminium, you just have to remember not to go nuts because the thicker material means that the strain on the stretched side is proportionally greater.
I've never needed to use the coin trick in the past. I'm sure its useful on some bars. Probably worth noting though that Jan uses it on a steel stem. Might be less favourable on alu stems.