Multi-Retraction Test, MultiRetraction, MRT, Retraction

thingiverse

If you'd like one setup for your printer, just let me know. Retraction can be a real pain for some folks. I see so many people struggling with it on a daily basis. Test after test after test with no real results. So, I thought, why not run all the tests at once?!?! So here it is, folks! The Multi-Retraction Test!!! Or MRT... This isn't your one-stop-fix-it-all test. In fact, none are. There are just too many variables. I've uploaded a few pics to show how retraction has changed in a few situations. But as you can see in the test, the stringing gets thinner and thinner towards the top until it stops!! You want to get rid of stringing, but you also don't want to use an excessive amount of retraction. Personally, I try to use a temp and retraction that would encompass all or most of my filaments. Excessive retraction can cause under-extrusion and jams. As the hot filament is sucked up too high into the cold side, it will get stuck. The printer struggles to push the filament out as it's currently printing (under-extrusion). And can get stuck, which many new users mistake for a clog, and try to clean the nozzle (which is unnecessary). So retraction, retraction, retraction!! This test at its core has nothing special about it. It's just a model I whipped up, and sliced it with a bunch of retraction changes. Then went back and spliced all the g-codes together. Base Cura profiles I use: layer height - 0.2mm Optimize wall print order (do not retract before outer wall), print speeds 50mm/s, retract speed - 45mm/s, z-hop - 0.4mm, zhop speed - 10mm/s, Travel Speed - 100mm/s. I do not use a brim or any first layer modifiers.. I run all my print speeds the same from layer 1 to layer XX, from outer wall to infill. I print 98% of my PLA with every temp set at 215c, but you can change the temp higher or lower (look in pic) by editing the g-code. Which means this should also work for ABS, PETG, or whatever.. Cura profiles have been uploaded if you choose to use them as well. How to use: Locate a g-code for your printer, the retraction range for your setup and the g-code flavor of your printer... Load and click print! MPMSv2 - Repetier - 0.4mm-2.0mm - File401 For my Monoprice Maker Select (and other Wanhao Duplicator i3 clones), 9g @ 45min print time testing 9 different retraction distances. Sliced in Cura 4.2.1. MPMSv2 - Repetier - .01mm-1.0mm - File420 Another for the Maker Select with an all-metal hotend requiring less than 1mm of retraction. Testing 10 retraction ranges. 10g @ 45min. Temp has been raised to 225 to compensate (what I print my PLA on my MS-All Metal). CR10S - Marlin - 0.5mm-7.0mm - File201 Updated test. Reduced print time and filament to 12g @ 1hr with 14 different retractions being tested. Sliced in Cura 4.2.1 with basic creawesome mod. I'm sure you can change out the beginning g-code with yours without altering the test. CR10S - Marlin - 0.4mm-2.0mm - File220 Sliced in CR10S with basic creawesome mod. Lower section of retractions for a direct drive setup. 9 different retraction tests. 9g @ 45min print time. Sliced in Cura 4.2.1. Somewhat of an change log... 2 Post tests have replaced the original 4 post tests. Reducing print time from 3hr to 1hr. File names could not be changed, so they've been re-uploaded with new names for easier picking and choosing as more files are planned to be uploaded. Cura profiles are base profiles I currently use. Dates have been added when they were exported so if newer profiles are added, they can be identified. I'm going to test some more to reduce material and print time. If successful, plan to upload them along side current files as not to remove current. Visit www.facebook.com/ModifiedDesigns3D . I don't post much, but sometimes I post my current projects