1 Topic by jeff.miller

  • jeff.miller
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Topic: Da Vinci Duo not gripping filament tight enough to feed.

Hi - I have a Da Vinci 2.0a Duo that was refusing to feed reliably from the left extruder.  I disassembled and flipped the drive motors to opposite sides and reassembled.  Left is working now.  Right is loose smile

That said, both motors are running - one simply isn't gripping the filament tight enough to feed it.  It just scrapes it up.

Not sure if I am using the right terms for everything here... But it seems the extruder roller spring tension is not tight enough - or the brass gear on the stepper is somehow worn.  Any idea where I can source replacement parts? 


Note: I've contacted XYZ in the past and simply refuse to ship them the whole printer for a simple repair... already don't the blown fuse thing and fixed it myself the first time.  This is the second issue.  Not wasting my time even trying to ask for parts.

http://soliforum.com/i/?Ud0DnLi.jpg

2 Reply by jeff.miller

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Re: Da Vinci Duo not gripping filament tight enough to feed.

Actually - since I could not have swapped the aluminum wheels... they are side dependent due to the frames... it has to be either the brass or the spring.

3 Reply by carl_m1968

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Re: Da Vinci Duo not gripping filament tight enough to feed.

Looks to me like the teeth on the brass gear are worn down. There should be a groove, but notice the groove in your picture on the right is much deeper and rounded than the one on the left. You also stated you swapped the motors and the problem followed. So that rules out the spring and leaves on the gear.

The gear is pressed on so getting it off without damaging the motor will be tough. but you can get replacement gears with set screws on ebay. You just need to now the diameter and teeth count as it is critical to control the feed rate.

Printing since 2009 and still love it!
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4 Reply by yizhou.he

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Re: Da Vinci Duo not gripping filament tight enough to feed.

before going crazy looking for replacement part, check if it is something you did during the swapping. simply swap it back and see if the problem follow the motor or follow the gears.

keep in mind, these two motor need to spin at the opposite directions. Also double check you don't have hotend jam and if manually push the filament will help. If you gear can scrapes up the filament, usually it works fine but filament stuck due to hotend jam or other trouble block the filament movement.

(Da Vinci 1.0, Jr. 1.0 RAMPS, miniMaker) X4, (Creality CR-10S, CR-10 mini, Ender-3) X4, Anycubic MEGA X4, Anycubic Chrion X1, ADMILAB Gantry X2 (MonoPrice Maker Select V2, Plus, Ultimate)X4--Select mini X1, Anycubic photon X4, Wanhao duplicate D7 X1.
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5 Reply by jeff.miller

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Re: Da Vinci Duo not gripping filament tight enough to feed.

I "may" have swapped the springs from side to side as well.  I get what you are saying though....

Problem is, in the photo above - one on the left is actually the working one - one on the right is slipping.

No jams in hot end... I drained that swamp before I broke out the books to disassemble.

I'm going to try bending the spring ends to make it a tad shorter next.  After that, it may call for more drastic measures.

6 Reply by Bozotclown1970

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Re: Da Vinci Duo not gripping filament tight enough to feed.

One other thing you may want to try before making a mess of the springs would be to see if you can raise the brass gears a tad so the filament has a new area to travel. A small gear puller may work.

7 Reply by mrmagloo

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Re: Da Vinci Duo not gripping filament tight enough to feed.

Imho, you can clearly see that the teeth on the brass gear on the right are worn down.