concretemachines, @concretemachines ActivityProfileForumsDocs 0 PersonalMentionsFavorites Show: — Everything — Updates Topics Replies Posts Comments New Docs Doc Edits Doc Comments concretemachines changed their profile picture 3 years, 4 months ago concretemachines's profile was updated 3 years, 4 months ago concretemachines became a registered member 3 years, 4 months ago