Timeline for What is the hardest wood possible, and where would this be a practical material?
Current License: CC BY-SA 3.0
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| when toggle format | what | by | license | comment | |
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| Mar 1, 2017 at 10:26 | comment | added | Graham | @SherwoodBotsford Interesting - thanks! | |
| Mar 1, 2017 at 2:56 | comment | added | Sherwood Botsford | In passing: A couple decades ago I did a tour of the Point du Bois dam on the Winnipeg river. The dam had been built in 1911. The turbines were horizontal axis with the upstream end bearings made of Lignum vitae, and lubricated with a water drip. In 1983 they were still using the original bearings. | |
| Feb 27, 2017 at 13:01 | history | answered | Graham | CC BY-SA 3.0 |