You asked about average size for bangle bracelets? I’ve found the
size varies just like ring sizes do. To help me take orders for a
properly-sized round bangle, I got several feet of that brass alloy
(sold as a gold look-alike) in a standard half-round wire about 3mm
wide. Then I cut lengths of the wire, each a quarter inch longer
than the last, beginning with 6.5 inches and going up to 9.5 inches.
Then I scribed the measured length on the flat side and soldered each
length into a bangle and rounded it. When all the varying sized
bangles are held together with a key ring, you have a set of bangles
with wire length already determined.
When your order is for a different sized wire, after your client has
found the best fit, you record the proper bangle size (I record that
length I scribed in the sizer). Then it’s simple to take that sizer
and put it on your bracelet mandrel, mark the mandrel with a Sharpie,
and use that reference mark to form the bangle to size. Remove the
mark with rubbing alcohol.
Another tip from Judy’s Dungeon in Kansas, where we had a dilly of a
hail storm last Monday. There’s a baseball-sized hail stone in the
freezer, along with two more only slightly smaller. Thank goodness
the area affected by the storm was pretty small!