{"action":"created","issue":{"url":"https://api.github.com/repos/Ultimaker/CuraEngine/issues/274","repository_url":"https://api.github.com/repos/Ultimaker/CuraEngine","labels_url":"https://api.github.com/repos/Ultimaker/CuraEngine/issues/274/labels{/name}","comments_url":"https://api.github.com/repos/Ultimaker/CuraEngine/issues/274/comments","events_url":"https://api.github.com/repos/Ultimaker/CuraEngine/issues/274/events","html_url":"https://github.com/Ultimaker/CuraEngine/issues/274","id":118170286,"number":274,"title":"Coast Velocity Ramp","user":{"login":"CCS86","id":12439543,"avatar_url":"https://avatars.githubusercontent.com/u/12439543?v=3","gravatar_id":"","url":"https://api.github.com/users/CCS86","html_url":"https://github.com/CCS86","followers_url":"https://api.github.com/users/CCS86/followers","following_url":"https://api.github.com/users/CCS86/following{/other_user}","gists_url":"https://api.github.com/users/CCS86/gists{/gist_id}","starred_url":"https://api.github.com/users/CCS86/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/CCS86/subscriptions","organizations_url":"https://api.github.com/users/CCS86/orgs","repos_url":"https://api.github.com/users/CCS86/repos","events_url":"https://api.github.com/users/CCS86/events{/privacy}","received_events_url":"https://api.github.com/users/CCS86/received_events","type":"User","site_admin":false},"labels":[{"url":"https://api.github.com/repos/Ultimaker/CuraEngine/labels/enhancement","name":"enhancement","color":"84b6eb"}],"state":"open","locked":false,"assignee":null,"milestone":null,"comments":14,"created_at":"2015-11-21T04:35:23Z","updated_at":"2016-03-09T13:48:44Z","closed_at":null,"body":"I really think the coast feature would benefit from a linear deceleration of the print head, rather than a fixed percentage of speed. As the extruder drive stops, flow rate is a function of pressure, and it will be bleeding off throughout the coast move. \r\n\r\nFor me, the parameter would be \"coast distance\" (as an alternative to volume). At a point, the coast distance away from a rapid move, the print speed begins to step down linearly. I believe this will better match the coast extruder flow, and allow you to bleed off more nozzle pressure, without leaving a void.\r\n\r\nThoughts?"},"comment":{"url":"https://api.github.com/repos/Ultimaker/CuraEngine/issues/comments/194303295","html_url":"https://github.com/Ultimaker/CuraEngine/issues/274#issuecomment-194303295","issue_url":"https://api.github.com/repos/Ultimaker/CuraEngine/issues/274","id":194303295,"user":{"login":"CCS86","id":12439543,"avatar_url":"https://avatars.githubusercontent.com/u/12439543?v=3","gravatar_id":"","url":"https://api.github.com/users/CCS86","html_url":"https://github.com/CCS86","followers_url":"https://api.github.com/users/CCS86/followers","following_url":"https://api.github.com/users/CCS86/following{/other_user}","gists_url":"https://api.github.com/users/CCS86/gists{/gist_id}","starred_url":"https://api.github.com/users/CCS86/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/CCS86/subscriptions","organizations_url":"https://api.github.com/users/CCS86/orgs","repos_url":"https://api.github.com/users/CCS86/repos","events_url":"https://api.github.com/users/CCS86/events{/privacy}","received_events_url":"https://api.github.com/users/CCS86/received_events","type":"User","site_admin":false},"created_at":"2016-03-09T13:48:44Z","updated_at":"2016-03-09T13:48:44Z","body":"Interesting. What is the intention for coasting then?\n\nI'm all for a more purposeful feature to let the extruder \"lead\"  the print\nhead though. Happy to help brainstorm ideas for that to balance complexity\nvs benefit.\n\nOn Wed, Mar 9, 2016, 4:44 AM Tim Kuipers <notifications@github.com> wrote:\n\n> Coasting is not supposed to be used for compensating the hysteresis effect\n> introduced by the bowden tube.\n> I've been talking with some colleagues and concluded that we need a new\n> feature to compensate for the 'bowden delay' apart from coasting.\n>\n> I hope we will find the time soon to implement such a new feature. I think\n> that with that feature this enhancement request will be eliminated.\n>\n> —\n> Reply to this email directly or view it on GitHub\n> <https://github.com/Ultimaker/CuraEngine/issues/274#issuecomment-194235515>\n> .\n>\n"}}