Elegoo Carbon Build Vol Frustrations!

[Kurt The 3D Printer GUY!!]

Am I the ONLY one who experiences these Frustrations???

So - I'm trying to work on this project for the ECC1 - You already know - the Air venting, filtration & recirculation. In that regard - I needed to prove - what is the Biggest thing I can print - in regards to X & Y!

Now - I know the volume is supposed to be 256mm squared on the build plate. So - I made a simple flat box with those dimensions. But, upon bringing into the Elegoo slicer - it was a NO GO! So - then I dropped it down to 250mm squared - and it was STILL a No Go!

As such - I figured - Hold On - am I missing something. So - I did a quick websearch to confirm the build volume - and I was Right on my AssUmptions:

I then even dropped down my box size even Smaller - to 245mm squared - and it's STILL a NO GO! This is the complaint inside of the Slicer:

As you will clearly see - I have it set to NO Brims and NO Skirts. I figured That might be the problem - making the print X&Y bigger than what can be produced - but, they are NOT Selected!!!

Now - if you think about it - it seems INSANE that this is happening!

WHY???

Cause it then seems to show that the claim of a 256mm cubed build volume is a LIE - if you can NOT Actually make it that size!

Am I wrong here???

Am I the ONLY one who is Annoyed by this???

I Highly DOUBT It...

-K

[david merten]

I haven't pushed mine to the size limits yet, so was completely unaware of this problem. I will check mine out when I have some time.

           David

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[Sean]

Yeah it's kinda annoying. But the machine will TECHNICALLY print a full 256x256. You just have to make a couple changes in the slicer and temporarily take off the protrusion that the cutter presses into when it's doing a filament cutting cycle. 

You'll need to click the edit box beside the printer dropdown to edit the machine profile. 

to this

This will allow you to print the full bed.

And again you'll need to temporarily take off the cutting protrusion in the upper right corner or when the machine goes to that corner it'll actuate the cutting mechanism.

[Kurt The 3D Printer GUY!!]

Sean - thanks SO MUCH for this quick feedback - I REALLY Appreciate it!!! 

So - about the - "temporarily take off the protrusion that the cutter presses into" - that's a Physical part of the machine I must remove - in order to truly implement the 256 cubed printing volume? How will removing that affect the operation of the printer? IF I limited print volume to 250 cubed - do I still need to remove that Cutter???

Again - thanks for the help - especially as I'm really digging into doing 3DP stuff this weekend - and want to really get cranking!

-K

[Kurt The 3D Printer GUY!!]

Also - just to note. The original setting limit print volume in one (or maybe more) directions to 246. So - my block being 245 squared should have still fit within that volume. Just sayin'...

-K

On Saturday, March 14, 2026 at 12:15:18 PM UTC-4 Sean wrote:

[Sean]

Yeah.  The protrusion has a single screw holding it into a socket in upper right front frame corner. It comes out and reinstalls easily. It has no function in the printer but for the cutting lever to press against when doing a filament change. You can just as easily manually push the cutting lever with your finger or thumb to cut the filament if needed.

Playing around in the settings just now. It seems the smallest area you can print, with the machine and slicer as default, is about 240x240 and that's with having to manually move the block to back left corner.

To view this discussion visit https://groups.google.com/d/msgid/3d-printing-tips--tricks/097ef90e-4d79-4cfb-9b0d-4da6a18f2156n%40googlegroups.com.

[Kurt The 3D Printer GUY!!]

Hello again Sean,

So - I'm continuing my deep dive into this print volume issue. 

Now - a couple things you mentioned. As for the cutter - and you mentioned - "in upper right front frame corner" - did you maybe mean upper Back corner? I believe THIS is the unit you speak of - which I circled in Red:

I did play with it - and see how it swivels - and obviously connected via a single screw. And you mentioned it's easy to remove. But, I'm going to hold off on removing it for the moment - you will see why...

Now - when you wrote "seems the smallest area you can print" - I think you meant the Largest area I can print. And, for specifics - you mentioned "is about 240x240". However, I did some experimentations. I kept on Tweaking the overall size of the Block on the build plate. And, as I would change the size - I would move it - so it didn't keep giving me warnings of Off build plate or In the Extrusion Exclusion area. When doing so - keep in mind, I did NOT change that Printer setting of Excluded Bed Area - as it still is set to:

As it turns out - I carefully kept resizing and shifting the position - as I was able to fit it within print volume - even though the size of it was 246mm x 257mm! This is it's position in back left corner of build plate:

In that pic - you can see not only the Dimensions of the block - but, the actual X/Y position of it. I was rather Thrilled to make this happen. 

So - the VERY Specific exclusion area - is actually based upon the Cutter that you spoke of. And, the image on the virtual build plate actually Show the exclusion is a Cutter - with the Knife like image. In this pic - I put in the Red line to show the edge of the exclusion and where I pushed the right edge of the block unit:

What I might actually do is print that block - but, only the perimeters - NO Infill - NO Top or Bottom - and just do like 1 layer of 3 perimeters as a Test!

I will keep you all posted on the outcome!

-K

[markni...@gmail.com]

Kurt,

Maybe it will technically print 256 x 256 x 256, you just can't get the print out of the machine afterwards.

[Kurt The 3D Printer GUY!!]

OK Mark - Are You just trying to be a Wise Guy???

Very Funny, very funny...

-K

[Kurt The 3D Printer GUY!!]

So - here we go!

I had the block set as above - and the slicer had Stopped giving me warnings. I figured it was GOOD - and I could print it. I set Infill, Top & Bottom to Zero & NO Skirt or Brim - as I mentioned before. But, upon slicing it - it gave an error - which did not happen Until I hit Slice:

So - I did a SLIGHT Tweak to Sizing & positioning - as such:

Then - Viola - I hit Slice & it worked:

And - print turned out fine:

Now - for Anyone with an ECC that wants to try the same test - I am attaching the project file!

-K

[Sean]

I'm sorry Kurt, if I was clear in my description. This image shows the location of the plastic protrusion bit I was talking about. This is looking into the machine from the top at an angle to see the front right upper corner. The yellow would be the inside of the glass front door. The protrusion sits inside a cavity in the green highlighted part. For some reason the removable protrusion part is not showing up in the cad model. But you can see the pocket where it should be and the threaded insert where it would be bolted to in red.

To view this discussion visit https://groups.google.com/d/msgid/3d-printing-tips--tricks/9308e496-c25b-4306-a5a9-172ef2ea0d7cn%40googlegroups.com.

[Kurt The 3D Printer GUY!!]

No worries Sean - I saw it now. It took me going back and forth between your email on my PC - and my printer in the other room - several times - but, I find DID indeed see the part you are talking about. 

Anyway - all is good - I got a fully maximized print volume - and it printed a Nice square - literally ALL the way to the Left edge of the build plate. So, yup - all good now. 

-K

[Sean]

I haven't tried this yet. I'm only relaying info I learned in the CC FB group. But I've wondered...

When doing this does the prime line still print? If so is it out of the way of the full size print?

To view this discussion visit https://groups.google.com/d/msgid/3d-printing-tips--tricks/67ed2813-ae6f-47fa-8175-89f4a7af5199n%40googlegroups.com.

[Kurt The 3D Printer GUY!!]

The prime lines DID indeed print. 

Pardon the messy stove top - where I put the print job - but, you will see the prime lines are there - and still kinda connected to the part - although - askew - since they were indeed separated enough from the part:

And yeah - the whole thing is flipped over - as the prime lines DO print in lower left corner of build plate...

-K

[Dan Flemming]

While doing searches for a problem i have, I came across a "how to print the full build size of the Centauri Carbon" (might have different wording).

  Seems like it my have been on the wiki, but really can't remember exactly where I read it, it was a link.

To view this discussion visit https://groups.google.com/d/msgid/3d-printing-tips--tricks/d2c52496-aead-473e-bc04-b542cf63f703n%40googlegroups.com.

[Kurt The 3D Printer GUY!!]

Dan - all that message - but, no link! No Bueno!!!

Besides - as I already proved in my own work on the ECC1 - I already proved how to print full volume!

Just sayin'...

-K
P.S. Wow - that's kinda Weird - this forum got REAL QUIET for several days - then today - a BURST of Postings! Nice!!!