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Ender-3 / CR10 / CR20/Tevo Tornado filament roller guide

by OneBadMarine Oct 30, 2018
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Love the design, but it sits too high on my Ender-3 Pro. The filament is rubbing on the buttom of this mount and isn't going straight through to the extruder (still rubbing on there as well).

Thanks for the feedback, added new body with a notch where the rubbing happened.

I had to file a notch in mine too. There's a remix that added a notch to the STL.

I used the arm and two pins (the one with two steps) from http://www.thingiverse.com/thing:3065048. The pins are a tight fit. I may have reduced them 1-2% before slicing. I printed two of the wheels from this model for it.

Filament guide for Ender 3
by Morley

I replaced my basic bearingless glide with this and now it feeds the filament smoothly with no squeaking. Great screwless design, and it even looks cool while rolling.

best filament guide i ever seen i have it on all my enders except the 5

For me the best roller guide ever ! The mount is smart and doesn't affect the Z nut, it's strong and efficient !

The way this mounts to the frame is brilliant! Thanks. I'm now looking into an upper feed roller using the bearing wheel from this model. I had to enlarge 1% to get the bearing to fit. It might have worked at 100% with lube but it split when I tried to tap it in the rest of the way. All good though. Loving this!

I was just looking for the same thing. Did you ever find an upper version?

I noticed that the wheel keeps my filament well away from the Z axis screw. No need for any other guide. I did have to file the exit side of the bracket a couple mm so the filament didn't drag.

added a notched .stl for resolving the rubbing

Printed with PETG, no supports. Used a bearing out of a fidget spinner, which are 608 skateboard bearings. So the bearing can spin freely, wash the grease out of with WD-40. Hold the bearing in a paper towel, spray both sides of the bearing and spin bearing. Repeat 2-3 times until bearing spins freely.

I also had to lightly sand the inside of the filament guide to remove some inspections. I then used a hammer to lightly tap the bearing into the filament guide.

What is that little guide you have after the roller closer to the entry point on the feeder?

my release lever was drilled to 3.8 mm and a piece of capricorn tubing was put inside it. was a bottomed hole so it does not go thru the arm completely.

Ender 3 Filament Guide easy install, thing 2920344

I use it to prevent the filament from touching the lead screw. May not need it anymore with now that the roller guide is installed.

For those interested it works fine on a Creality CR20. Thanks Luke.

I made the interior 22.1mm and now fits perfect

I have printed this bearing carrier 3 times now,each time it breaks when i gently try to push in by hand my 608RS bearing

Use the x and y scale to enlarge it slightly in the slicer. Try adding 1 to 2% each time till it fits. With it laying flat on bed.

Perhaps try scaling it up slightly (not sure exactly how much) and print a few layers on its side until you have just enough of the centre "hole" printed so you can re-test it with the bearing?

Then print the new scaled size (standing up) once happy.

Note: There will be a little shrinkage (amount dependent on the filament), but that is negligible.

Personally, mine didn't fit either but it was minimal so I was able to file a very small amount on the inside until it fitted.

This design is perfect. Thank you so much. There's a small bit of tolerance between the bearing in the mount but it appears that it'll do just fine.

What size Bearing does this use? The 608zz I used was too big and popped the print.

I was able to use the 608zz but I had to sand the interior slightly so it was smooth and to make it fit. It's working great for me now.
It makes feeding the filament so much easier.

Well made and I love that it does not require any tools or screws to install. Print the 17mm peg sideways it will be much stronger. Some sanding will be needed as this is a tight fit on the Z Steppee motor frame

tried this one. it printed well and I used some paper to shim the bearing to the plastic push rod. thanks.