User talk:2405:204:5315:1B93:0:0:9E9:20AD

November 2019
Hello, I'm Harry Puckereadnus. I wanted to let you know that one or more of your recent contributions to Tuned mass damper have been undone because they 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. Harry Puckeredanus (talk) 04:29, 20 November 2019 (UTC)

Please refrain from making unconstructive edits to Wikipedia, as you did at Tuned mass damper. Your edits appear to constitute vandalism and have been reverted. If you would like to experiment, please use the sandbox. Repeated vandalism may result in the loss of editing privileges. Thank you. Harry Puckeredanus (talk) 04:30, 20 November 2019 (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.