Denny wrote... > Hmmm... I have a ruler, a piece of blank FR4 (0.062" D/S 1 oz) and a > scale handy.... > 32.4 cm x 18 cm, 190 grams Dmitry wrote... > Pretty close approximation would be 2.1 gramm per sq. inch > for FR-4 0.062" two sides 1oz copper plus shipping box weight > and packing materials as well. Denny & Dmitry...from each of your examples above I calculate 3.26kg/m2, and my PCB supplier came up with a figure of 3.4kg/m2. Seems to work out right for the package I received too (darn it!). Thanks for your help! -- Brent Brown, Electronic Design Solutions 16 English Street, Hamilton 2001, New Zealand Ph: +64 7 849 0069 Fax: +64 7 849 0071 Cell/txt: 027 433 4069 eMail: brent.brown@clear.net.nz -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist