The reason I used the different metals was for lathe practice as turning is a new thing
for me, very interesting how the various metals cut, Brass is sweet due to self lubricating,
no heat and cuts a dream, Copper is nice to but generates and retains a lot of heat and
Stainless is fine with small cuts and plenty of cooling fluid.
Real enjoyable and satisfying making your own shit even though these struts wont be used
on the finished build, its all about learning a new skill at this stage.
Having said that, ive always admired English vintage bikes and the lighter gauge mounting
design they use, similar to the 1/4" stainless rod shown here.