Hi Roberta, Firstly I have written an article "What is it made of" on Web docs. It is pretty detailed. ( avoid the destructive tests) https://www2.cs.arizona.edu/patterns/weaving/webdocs/lb_matrl.pdf Find my name by scrolling then find the article (others know easier ways!!)
I wrote that a long time ago, it is still valid, but what I do is look for a "Grain" on ivory as opposed to lines and perhaps holes in bone. I could add look for a proper, nice grain. Bone marks are crude lines and rough compared with the nice grain finish and look of ivory. I often use a magnifying glass. That will be a good start. Once you find some real ivory and looked at it carefully the difference between it and bone will be comparatively easy. Best guess is to assume that all bobbins are bone... there are but few exceptions. I hope that is helpful Regards Brian -- I am using the free version of SPAMfighter. SPAMfighter has removed 130 of my spam emails to date. Get the free SPAMfighter here: http://www.spamfighter.com/len Do you have a slow PC? Try a Free scan http://www.spamfighter.com/SLOW-PCfighter?cid=sigen - 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/
