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You'll need more than just the front/back/side plates to make a taller printer. Even if you also add longer rods and leadscrew, you will still run into issues because the original design just was not meant for this height. With a 900mm tall part, the bed will start to cantilever too much, the leadscrew will start to wobble too much.

 

I can recommend the Z-Unlimited kit from Rooie Joris if you want to print that high (or higher):

http://www.rooiejoris.nl/z-unlimited/

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That's an interesting innovation.  I was just starting to wonder what I should do with my UMO.  This might answer that question. 

 

I tried to figure out how the support arms are configured.  I get that there is yarn strung between the holders on either side, but can't quite see how that is incorporated.  I presume the print is paused, the yarn strung flat, then the print resumes and the yarn is just buried in the filament, but when I see the pictures, it looks like the yarn is under tension downward.  is the whole thing strung like a raquet, then lowered to create that tension before printing resumes?

 

Thanks!

John

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5 hours ago, JohnInOttawa said:

I tried to figure out how the support arms are configured.  I get that there is yarn strung between the holders on either side, but can't quite see how that is incorporated.  I presume the print is paused, the yarn strung flat, then the print resumes and the yarn is just buried in the filament, but when I see the pictures, it looks like the yarn is under tension downward. 

 

There is no pausing involved; you place the string while the printhead is moving. The tension is applied by you while applying the string. The shape of the support arms is such that they are a bit below the top of the print, so the string is normally tensioned down a bit. Because the printer is basically suspended upside down above the print, the print is much more accessible so tensioning the string while printing is a bit less timing-critical than it sounds.

 

5 hours ago, conny_g said:

Would you share prints you made with it?

 

I have mainly done some vase-like-objects, with an old nozzle that was worn down to a diameter of about .8mm (from .4 mm) with 0.4mm high layers. That way I can print ~1 meter high objects in approximately 5-6 hours:

 

 

@rooiejoris' elephant is a more hardcore print using his mod.

 

4 hours ago, rebekah_harper said:

Is that the geared stepper aswell?

 

Yes, everything was included in the kit I purchased, except one or three printed parts which I have found to be somewhat optional.

Also see the instructions for modifying the printer using the kit here: http://www.rooiejoris.nl/instructions/

 

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Just get a Raspberry Pi, or a starter kit (eg https://thepihut.com/collections/raspberry-pi-kits-and-bundles/products/raspberry-pi-3b-plus-starter-kit)

Then install OctoPi on it: https://octoprint.org/download/

 

Note that OctoPrint is not a requirement for using the Z-Unlimited. Once you have done the conversion, you can print as you have always done (it will just take longer and result in awesomer prints)

Edited by ahoeben

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2 hours ago, ahoeben said:

Just get a Raspberry Pi, or a starter kit (eg https://thepihut.com/collections/raspberry-pi-kits-and-bundles/products/raspberry-pi-3b-plus-starter-kit)

Then install OctoPi on it: https://octoprint.org/download/

 

Note that OctoPrint is not a requirement for using the Z-Unlimited. Once you have done the conversion, you can print as you have always done (it will just take longer and result in awesomer prints)

Hiya,

that I am aware of however I need the portion to monitor the print and some control as I am not going to sit with the printer for 2+ days lol plus pause it if I need to.

 

cheers for the links 😃

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