Bowden Clamp for Ultimaker (Feeder End)
Derived from
Description
Instructions
2. If the bowden hasn't popped out and you still want to replace original clamp by this, simply press down on the original clamp and pull the bowden out.
3. Disassemble mechanism feeder on you Ultimaker, by unscrewing the extruder wheel, then the 4 botls holding the stepper motor.
4. Take the mechanism apart by unscrewing the 4 remaining bolts.
5. Remove the original clamp, and replace it with the raiser printed.
6. Put everything together,
7. Place the cap then the cone on the bowden, push it till the end to the raiser and screw the cap on using moderate force - the thing is pretty tough when printed using PLA and 100% fill, but use your hand only (two fingers).
See the photos - should be self explanatory.
The cap and cone are identical to the one used in owen's Bowden Clamp for the hot end, so you should be able to reuse those part if you have them printed already. I've made the cap slightly smaller inner diameter to have a tighter fit for the thread - it works perfectly for me - if it does not for you please adjust the parameters at the top of the scad file accordingly.
PS. This is the first thing I'm putting on Thingiverse - let me know if you print it :)
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Hey pit3k.
Just printed your bowden clamp for the feeder end. Thanx a lot to both you and Owen.
We've been experiencing lots of problems with the cable popping out on the heater end, which we solved by tapping thread into the bowden but then it started popping out of the feeder end. kept it running long enough to print the clamp!
One of our first succesfull prints except for the standard
cubes, cones and plates for calibration. Love it!
I have adapted http://www.thingiverse.com/thi... to fit this design. :)
I've tested the clamp - fits great, but the bowden did slipped again when I tried large downskin with small layer size. So, I've printed more aggressively gripping cone (longer and smaller ID). This one has extreme grip - I've attached it as cone-extreme-grip.stl. But beware! I've tried unscrewing and getting the bowden tube out - it's impossible - looks like my tube is now "welded in" for good :)
Gee that was quick. Looks good and a nice print too. I've already got a spare cone and cap so I'll just print out the base and have it handy. :)
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More from pit3k
Any tips on what values to change in Openscad to try to make one for a slightly thinner PFA tube? My new tube has a 6mm OD and it popped out of this holder -- I made sure to use the more extreme grip part too.
Slightly decrease the tighteningConeInnerRatio parameter and print a new grip cone. It's at 0.85 now - try 0.80 or 0.75. It will result in slightly smaller cone ID without changing it's outer dimensions.