My son is ready to use his National Geographic Rock Tumbler. He can't find the instructions. Can you help?
Complete instruction manual to be found following the following link: http://www.sbdirect.biz/_download_files/NG09.pdf (my son also lost the instructions and I had to search the web to find another copy...
This is a link to generic instructions for rock tumblers:
http://chemistry.about.com/library/weekly/aa011803a.htm
For earlier version of National Geographic Rock Tumbler (c. 2004) anyway, you can order instructions for free from below merchant. Confirmation email will contain a link to download printable instructions. Worked like a charm for me just now...
National Geographic Toys Rock Tumbler Instructions
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