Does anyone know where I can locate a chart which tells me if I
want a 16" necklace with all 3mm beads, how many beads I need?
Why worry about a chart, figure it out for yourself. One inch is
25.4 mm. A 16" necklace is 406.4 mm (25.4 x 16 = 406.4). 406.4 mm
divided by 3 = 135.46.
Assuming the necklace isn’t knotted & the beads are touching each
other the 135 number is correct If the necklace is knotted, then you
have to add the length of the knot to the equation. Probably about 1
mm per bead.
To determine the number of mm in an item measured in inches,
multiply the inches by 25.4. If you have an item quoted in mm & want
to convert to inches, multiply the mm by .03937 (1 divided by 25.4).
406.4 x …03937 = 16.