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Hello Swapnil.sonawane111. I have had to blank your user page because it contained a large amount of material pasted in verbatim from http://www.welding-robots.com/articles.php?tag=657. Beginners often don't realize that copyright material cannot be pasted anywhere on Wikipedia including user drafts. Repeat copyright violations can result in blocking, so don't do it. Please contact your Campus Ambassador or your instructor and ask them to explain the policies to you. Best wishes, Voceditenore (talk) 15:34, 29 October 2011 (UTC)Reply