User talk:81.145.159.178

September 2020
Hello. This is a message to let you know that one or more of your recent contributions, such as the edit you made to 1883 eruption of Krakatoa, did not appear constructive and has been reverted. Please take some time to familiarise yourself with our policies and guidelines. You can find information about these at our welcome page which also provides further information about contributing constructively to this encyclopedia. If you only meant to make test edits, please use the sandbox for that. If you think I made a mistake, or if you have any questions, you may leave a message on my talk page. Thank you. Opalzukor (talk) 08:23, 28 September 2020 (UTC)
 * If this is a shared IP address, and you did not make the edits referred to above, consider creating an account for yourself or logging in with an existing account so that you can avoid further irrelevant notices.

November 2020
Hello, I'm A-NEUN. I wanted to let you know that I reverted one of your recent contributions —specifically this edit to Extrusion—because it did not appear constructive. If you would like to experiment, please use the sandbox. If you have any questions, you can ask for assistance at the Help desk. Thanks. A-NEUN  &#10686;TALK&#10686;  10:37, 9 November 2020 (UTC)

Please refrain from attempting to make unconstructive edits to Wikipedia. Your edits appear to constitute vandalism and have been [ disallowed by an edit filter.] If you would like to experiment, please use the sandbox. Repeated vandalism may result in the loss of editing privileges. Thank you. Materialscientist (talk) 10:38, 9 November 2020 (UTC)