{"action":"created","issue":{"url":"https://api.github.com/repos/alexrj/Slic3r/issues/2810","labels_url":"https://api.github.com/repos/alexrj/Slic3r/issues/2810/labels{/name}","comments_url":"https://api.github.com/repos/alexrj/Slic3r/issues/2810/comments","events_url":"https://api.github.com/repos/alexrj/Slic3r/issues/2810/events","html_url":"https://github.com/alexrj/Slic3r/issues/2810","id":72179524,"number":2810,"title":"Limit max. Extruder Flowrate/Feedrate without limiting Retract/Unretract Speeds","user":{"login":"simonkuehling","id":296454,"avatar_url":"https://avatars.githubusercontent.com/u/296454?v=3","gravatar_id":"","url":"https://api.github.com/users/simonkuehling","html_url":"https://github.com/simonkuehling","followers_url":"https://api.github.com/users/simonkuehling/followers","following_url":"https://api.github.com/users/simonkuehling/following{/other_user}","gists_url":"https://api.github.com/users/simonkuehling/gists{/gist_id}","starred_url":"https://api.github.com/users/simonkuehling/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/simonkuehling/subscriptions","organizations_url":"https://api.github.com/users/simonkuehling/orgs","repos_url":"https://api.github.com/users/simonkuehling/repos","events_url":"https://api.github.com/users/simonkuehling/events{/privacy}","received_events_url":"https://api.github.com/users/simonkuehling/received_events","type":"User","site_admin":false},"labels":[{"url":"https://api.github.com/repos/alexrj/Slic3r/labels/Done","name":"Done","color":"02e10c"},{"url":"https://api.github.com/repos/alexrj/Slic3r/labels/Needs%20testing","name":"Needs testing","color":"d7e102"}],"state":"open","locked":false,"assignee":null,"milestone":{"url":"https://api.github.com/repos/alexrj/Slic3r/milestones/29","html_url":"https://github.com/alexrj/Slic3r/milestones/1.2.9","labels_url":"https://api.github.com/repos/alexrj/Slic3r/milestones/29/labels","id":1157442,"number":29,"title":"1.2.9","description":"","creator":{"login":"alexrj","id":594957,"avatar_url":"https://avatars.githubusercontent.com/u/594957?v=3","gravatar_id":"","url":"https://api.github.com/users/alexrj","html_url":"https://github.com/alexrj","followers_url":"https://api.github.com/users/alexrj/followers","following_url":"https://api.github.com/users/alexrj/following{/other_user}","gists_url":"https://api.github.com/users/alexrj/gists{/gist_id}","starred_url":"https://api.github.com/users/alexrj/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/alexrj/subscriptions","organizations_url":"https://api.github.com/users/alexrj/orgs","repos_url":"https://api.github.com/users/alexrj/repos","events_url":"https://api.github.com/users/alexrj/events{/privacy}","received_events_url":"https://api.github.com/users/alexrj/received_events","type":"User","site_admin":false},"open_issues":15,"closed_issues":3,"state":"open","created_at":"2015-06-09T19:18:15Z","updated_at":"2015-06-15T15:18:41Z","due_on":null,"closed_at":null},"comments":30,"created_at":"2015-04-30T14:28:16Z","updated_at":"2015-06-16T10:54:17Z","closed_at":null,"body":"Hi,\r\n\r\ni have trouble finding a suitable solution to limit the maximum volumetric extrusion rate of material that will ever be pushed through the nozzle for my extruders.\r\n\r\nWhile the maximum feedrate of the extruder motor can be set in the firmware, it is not an adequate solution as it would also limit the retract and unretract speeds to the same level.\r\nThinking a little further, only the slicer can determine precisely which extruder move will most likely be actual extrusion, retract or unretract.\r\n\r\nWith features like \"Combine Infill\" and logic like \"Gap Fill\", there are quite some situations where extruders can reach their material flow limits by really wide or thick extrusion segments, despite already running with moderate overall feedrates.\r\n\r\nTo efficiently utilize the maximum print speed possible with a given printer, i propose to add a volumetric extrusion rate limit to the extruder configuration - so we do not have to artificially slow down general feedrates in order to account for some rare edge cases (like wide gap fill lines or really thick multi-layer infill paths)\r\n\r\n(Or am i blind for an existing solution that already does just that?)\r\n\r\n"},"comment":{"url":"https://api.github.com/repos/alexrj/Slic3r/issues/comments/112384498","html_url":"https://github.com/alexrj/Slic3r/issues/2810#issuecomment-112384498","issue_url":"https://api.github.com/repos/alexrj/Slic3r/issues/2810","id":112384498,"user":{"login":"simonkuehling","id":296454,"avatar_url":"https://avatars.githubusercontent.com/u/296454?v=3","gravatar_id":"","url":"https://api.github.com/users/simonkuehling","html_url":"https://github.com/simonkuehling","followers_url":"https://api.github.com/users/simonkuehling/followers","following_url":"https://api.github.com/users/simonkuehling/following{/other_user}","gists_url":"https://api.github.com/users/simonkuehling/gists{/gist_id}","starred_url":"https://api.github.com/users/simonkuehling/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/simonkuehling/subscriptions","organizations_url":"https://api.github.com/users/simonkuehling/orgs","repos_url":"https://api.github.com/users/simonkuehling/repos","events_url":"https://api.github.com/users/simonkuehling/events{/privacy}","received_events_url":"https://api.github.com/users/simonkuehling/received_events","type":"User","site_admin":false},"created_at":"2015-06-16T10:54:17Z","updated_at":"2015-06-16T10:54:17Z","body":"@smsagent thanks for the precise summary.\r\n\r\nI like the idea of a proportional modificator factor under filament settings complementary to the extruder specific *Max Volumetric Speed* setting.\r\nThis way both are directly connected with eachother, which emulates the underlying physical effects quite closely (or as close as we get with empirical parameters as an input)\r\n\r\n@alexrj, right now i only quite extensively tested regarding print failures due to too high extrusion rates as this was the first priority in my cases. For this i can confirm huge success already, it works remarkably well and make slic3r profiles much easier to modify without knowing the machine limits so well.\r\nI will issue some performance tests for surface quality impacts over the next days as well - especially for the case of thinner outer perimeters.."}}