I have had similar issues with wire, and checked in with a wire maker. I found out that the core wire measurement is what is used. For example, a supa wire which is a copper core, at least one coat of color, and then a coat of silver is still gauged at the copper core size. Two or more coatings definitely change the diameter of fine wires. I wonder if something similar could happen in pin manufacturing? Certainly, it could just be the usual factors like inconsistent manufacture, supplier variation, etc. Kim On Oct 30, 2013 8:14 AM, <dmt11h...@aol.com> wrote:
> Thanks to all who have responded to the pin question, it has been very > helpful. Acting on arachne sourced advice I decided to try to use a box of > pins that I had from Holly Van Sciver which were labeled Bohin 30 x .85 > nickel. As we have discovered the first number is the length and the > second is > the width. Logically, it would seem that for someone seeking a width of > .86 mm > there would not be a perceptible difference in using a pin that is .85 mm. > However, the pin felt different, and did not resist heavy tensioning as > well as the .86 mm. Could it be only 1/100 mm less in diameter? > > Lacking a micrometer, I took Adele's advice and laid 10 pins next to each > other to measure them. To my surprise the .86mm measured about .83 and the > .85 pins measured .78. So the discrepancy between the pins was not 1/100 > mm > but rather 5/100 mm. But, more distressing, it illustrated that the > diameter measurements of the pins are not reliable. > > In that many manufacturers fail to list the diameters of their pins, as I > discovered when I went on the numerous pin sites provided to me, one would > almost think that pin manufacturers are unaware that their purchasers > regularly measure their pins with micrometers! > > I confess that I have never mastered how to add photos to the arachne > flicker site, so if you would like to see the results of my pin > investigation, > ie. a photo of the pins together, and then a photo of each of them laid in > sets of 10 and measured with a millimeter tape, I have posted them to > laceioli.ning. If someone wants to add them to the Flicker site, feel free. > > Here is the link to the photos on laceioli.ning which you don't have to > join to view. > > > http://laceioli.ning.com/group/tools-and-equipment/forum/topics/pins-seeking > -29-mm-x-86?xg_source=activity > > But seriously, where did I buy these pins and how can I get more. > > Devon > > - > To unsubscribe send email to majord...@arachne.com containing the line: > unsubscribe lace y...@address.here. For help, write to > arachne.modera...@gmail.com. Photo site: > http://www.flickr.com/photos/lacemaker/sets/ > - To unsubscribe send email to majord...@arachne.com containing the line: unsubscribe lace y...@address.here. For help, write to arachne.modera...@gmail.com. Photo site: http://www.flickr.com/photos/lacemaker/sets/
