Jewelry Making Tip of the Week – December 27th – Determining How Many Beads Per Inch Are Required for a Design

by Karen on December 27, 2009

In order to determine the number of beads per inch required for a design or to help determine the cost of a piece all you need to do is apply the Beads-Per-Inch formula. 1 inch = 25.4 millimeters so you simply divide 25.4 by the diameter of the bead, then multiply the total by the length of the bracelet or necklace. For example if you are making a 17 inch necklace using only 6mm beads you would divide 25.4 by 6 which equals 4.2 beads per inch. You would then multiply 4.2 by 17 to get a total of 72 6mm beads required for a 17 inch strand. Of course you would also need to allow for the length of the clasp for a more accurate measurement. If you have different size beads the algebra becomes a little bit more complicated, but by applying the proper proportions for the different size beads and with some patience you will be able to apply this formula and come up with an accurate estimate. You could also use a design board which might ultimately be much easier depending upon the design.

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