1 Topic by Staffordknot

  • Staffordknot
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Topic: Printer head wobble and feed issues

Should my printer head wobble up and down as it prints? There is a large gap on the rear guide rail see photo which seams to allow it to wobble when moving around?

How tight should the extruder thumb turn be? It seams to be struggling to push the filament through?

Cheers

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2 Reply by cckens

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Re: Printer head wobble and feed issues

It should not... you can loosen the lower screw and turn the white block to tighten it up a little...

The tension screw should be tight enough to help the bearing grip the filament with the idler gear.  If you're feeding filament and you don't see the bearing turning... tighten it until it does.

3 Reply by Staffordknot

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Re: Printer head wobble and feed issues

So should it be touching top and bottom? Every time it pulls on the filament it lifts the head up by several mm. I presume it wants to touch but not grip?

4 Reply by cckens

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Re: Printer head wobble and feed issues

Correct.  If there's too much play on the extruder head you may get some unexpected line widths.  Conversely, you want the movement to be smooth on the x-axis, but not binding, so there has to be a little wiggle on the rod.  Tighten the block and test the movement on the x-carriage with the motors off.

5 Reply by ronsii

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Re: Printer head wobble and feed issues

Staffordknot wrote:

So should it be touching top and bottom? Every time it pulls on the filament it lifts the head up by several mm. I presume it wants to touch but not grip?

I'm curious how your print head is normally down in the front because on all my SD printers the nozzle is up by default so when the filament is pulled it would put more 'nozzle up' pull on it which would not move because the back upper block is riding on the rod not the lower block??? or have you added a lot of weight to the front of the printhead changing the balance point?

6 Reply by elefort

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Re: Printer head wobble and feed issues

Hey Staffordknot,

I just got a solid doodle 2 and I have the same wobble issue. I wanted to know if you were able to fix this issue and if so, if you can be so kind to share what you did to fix this issue?

Thanks

7 Reply by elmoret

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Re: Printer head wobble and feed issues

elefort wrote:

Hey Staffordknot,

I just got a solid doodle 2 and I have the same wobble issue. I wanted to know if you were able to fix this issue and if so, if you can be so kind to share what you did to fix this issue?

Thanks

Did you read the second post in this very thread?

Filastruder - the robust, inexpensive filament extruder
E3Dv6 All Metal Hotend - the premier 3D printing hotend

8 Reply by elefort

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Re: Printer head wobble and feed issues

I did read the second post of this thread but he never verified that adjusting the height of the white block was enough to fix this issue.

9 Reply by Staffordknot

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Re: Printer head wobble and feed issues

Yes it did elefort... Wow one of the very first posts i ever did! Elefort persevere with it! Its a steep learning curve but you will get there