Topic: 5 second mod - no more tangles
OK. My 5 minute mod let me down on the 4th spool. Turns out all I had to do was clip a carabiner to the feed to solve the problem. Uses gravity to take up the slack so the spool doesn't go haywire.
1 2014-11-30 22:15:13 (edited by TickTock 2014-12-01 13:16:55)
- TickTock
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Re: 5 second mod - no more tangles
good idea, thanks!
3 2014-12-07 17:03:50 (edited by jagowilson 2014-12-07 17:04:59)
Re: 5 second mod - no more tangles
I'm working on a wall mount to get the filament off the back of my SD4. Have you ever noticed how much it actually holds up your axes when printing near the front of the printer? The motors have to rotate the spool with them-not good. A system feeding through the top would solve this, but I likely won't get a chance to set it up and post STLs until January. There are plenty of mounts that will put the spool on your printer's frame but allow it to feed through the top. I would just prefer to have it on the wall--studs are stronger than the Solidoodle frame 
- ggunners
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Re: 5 second mod - no more tangles
A fishing weight might work the same way.
SD2 Expert stock, ABS fume fan,
XYZ DaVinci 1.0 stock ABS, Simplify3D
QUBD Two-Up PLA, new 3D printed X gantry, Y idler, flex z coupler, extruder mount, E3D Lite
XYZ DaVinci 1.0 stock ABS, Simplify3D
QUBD Two-Up PLA, new 3D printed X gantry, Y idler, flex z coupler, extruder mount, E3D Lite
- TickTock
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Re: 5 second mod - no more tangles
I had started to design an active filament feed/tensioner but now that I have a working (albeit simple) solution, that project fell a few rungs down on the list. I still think that would be the ideal - don't rely one the Y stepper or the extruder stepper to turn the spool at all. Then you can put the spool under tension to avoid unraveling and should get more consistent extrusions (no random forces applied depending on the spool condition).
- grob
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Re: 5 second mod - no more tangles
I was thinking of top feed through a bowden tube, then the position of the extruder doesn't affect filament feed. Still needs to pull off the reel, but only at the extruder's pace, never with the y axis!
SD3. Mk2b + glass, heated enclosure, GT2 belts, direct drive y shaft, linear bearings, bowden-feed E3D v5 w/ 0.9° stepper
Smoothieboard via Octoprint on RPi
Smoothieboard via Octoprint on RPi
Re: 5 second mod - no more tangles
grob wrote:
I was thinking of top feed through a bowden tube, then the position of the extruder doesn't affect filament feed. Still needs to pull off the reel, but only at the extruder's pace, never with the y axis!
http://www.soliforum.com/topic/6498/ptf … eed-guide/
I've done exactly this, works like a charm. I shortened up the tubing quite a bit after those pictures. Now i just went to bowden. Extruder had no problems turning the reel, nice and smooth.
Bowden SD3, Rumba, E3D hotend, Mk5 with RtRyder changes, Direct drive Y axis and bearings, GT2 pulleys and braided fishing line, Lawsy linear bearing conversion, M3 Z screw.
- grob
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Re: 5 second mod - no more tangles
Super news, thanks monk!
SD3. Mk2b + glass, heated enclosure, GT2 belts, direct drive y shaft, linear bearings, bowden-feed E3D v5 w/ 0.9° stepper
Smoothieboard via Octoprint on RPi
Smoothieboard via Octoprint on RPi