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paul9

Feeder solution for UM2 for filaments 1,75mm

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feeder.thumb.jpg.64789bd2c1927746305b654aee1a3e6a.jpgHello guys,

Yesterday I converted my Ultimaker 2 to the filaments from 1,75mm.

My choice was desired for the simple reason that it is much easier to find in nature, and different colored filaments with a diameter of 1,75mm to 2,85mm that.

After changing the extruder block with a suitable provided by 3Dsolex, I also changed the feeder that so far had been to the factory with all the problems we now know all owners of a UM2.

I mounted feeder IRobertl modified to filaments from 1,75mm.

At a time of mounting the component MK8 with 5mm I had to give up the mount because this prevented me to add another important component to guide the thread as you can see from the attached photos.

I then reassembled the one provided in the original version of the feeder.

For now it seems that all is well, but I would ask all of you how to mount a MK8 system that is smaller.

feeder.thumb.jpg.64789bd2c1927746305b654aee1a3e6a.jpg

Edited by Guest
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Read this

https://ultimaker.com/en/community/21533-where-to-edit-firmware-esteps-for-um2

Also tinkergnome firmware allows to change it using the screen on the um2.

I can not find a guide to show me how to change motor steps as you said to me.

I'm no expert and I've never done something like that, you can indicate a tutorial that explains step by step how to do this procedure.

Thank you.

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It's explained on the post but

M92 E97.6

M500

M92 E sets the esteps

M500 Writes the change on the printer memory.

Remember to add a 'return' after M500 or the gcode won't be executed.

As soon you have the correct esteps value, you make a text file with that 3 lines and you name it something.gcode or anyname.gcode

The three lines are

1st Line: M92 E97.6 (with other numbers ofc that will be the esteps)

2nd Line: M500 (this command saves the new esteps into the printer memory

3rd Line: Empty, but must exist to ensure you placed a 'return key' at the end of line 2.

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It's explained on the post but

 

M92 E97.6

M500

M92 E sets the esteps

M500 Writes the change on the printer memory.

Remember to add a 'return' after M500 or the gcode won't be executed.

 

As soon you have the correct esteps value, you make a text file with that 3 lines and you name it something.gcode or anyname.gcode

The three lines are

1st Line: M92 E97.6 (with other numbers ofc that will be the esteps)

2nd Line: M500 (this command saves the new esteps into the printer memory

3rd Line: Empty, but must exist to ensure you placed a 'return key' at the end of line 2.

 

But how do I understand or know the correct steps value?

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You get a caliper, measure the dia of the mk8 (the area that grips) then you calculate the leadscrew pitch (use the guide I linked and read the part of 'thefeeder'. To calculate the leadscrew pitch get the dia you got from the mk8 (effective dia) * pi (3.1415)

The number that gives the reprapcalculator you * by 5.5 and that will give you an almost accurate esteps. Then you can fine tune it visually or by using guides available on internet (search adjusting esteps 3d printer).

Edited by Guest

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I will have to ask another piece of information. I currently have installed the m16 spacer 38mm but I think it is correct to 37 mm What can you tell me about you?

 

On that matter I can't comment, just because I use a customized 60mm m3 screw where I insert printed spacers to make a custom sized m3. What I know is that 1.75mm doesn't need to be 'really tight' it's more weak and also it doesn't need that much force to extrude (vs 2.85mm) so it's a trial/error preference. Over time you will end knowing how much force it's ok for each filament.

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I will have to ask another piece of information. I currently have installed the m16 spacer 38mm but I think it is correct to 37 mm What can you tell me about you?

 

On that matter I can't comment, just because I use a customized 60mm m3 screw where I insert printed spacers to make a custom sized m3. What I know is that 1.75mm doesn't need to be 'really tight' it's more weak and also it doesn't need that much force to extrude (vs 2.85mm) so it's a trial/error preference. Over time you will end knowing how much force it's ok for each filament.

 

Ok I understand. Thank you

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I will have to ask another piece of information. I currently have installed the m16 spacer 38mm but I think it is correct to 37 mm What can you tell me about you?

 

On that matter I can't comment, just because I use a customized 60mm m3 screw where I insert printed spacers to make a custom sized m3. What I know is that 1.75mm doesn't need to be 'really tight' it's more weak and also it doesn't need that much force to extrude (vs 2.85mm) so it's a trial/error preference. Over time you will end knowing how much force it's ok for each filament.

 

cal.thumb.jpg.0c30d972fbd5c00e01f34d614451a6ff.jpg

Value is 11 mm

after 11x3,14=34,54 and later this value as part of the site so I'll have to inseire?

http://prusaprinters.org/calculator/

cal.thumb.jpg.0c30d972fbd5c00e01f34d614451a6ff.jpg

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Dont skip decimal points it's 10.91*3.1415=34.2737

That for the um2 motor is n the calculator says 186.73 and now that value you add a 5.5% so 197.00 esteps as starting point

Next time don't be lazy and read all :p

 

It is not laziness, and I did not understand well.

My English is not good.

And now with that value as I proceed to apply it in my UM2?

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That's fully explained

https://ultimaker.com/en/community/22597-feeder-solution-for-um2-for-filaments-175mm?page=last#reply-156590

Make a Text file with that data

M92 E197.00

M500

Or connect to the printer with USB using Printrun

http://www.pronterface.com

And 'type' that codes into the printer (it's like a chat to talk to the printer)

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