Gaps

Did it in Moi3D, kind of Rhinoceros. From the same guy who wrote Rhino, but simpler and best interface.

I'm starting the print now, 12 hours.

Did the shell 2mm thick.

0.14 layers, Solid infill (not full). No support. High speed (the only thing I'm scared).

Did it in Moi3D, kind of Rhinoceros. From the same guy who wrote Rhino, but simpler and best interface.

I'm starting the print now, 12 hours.

Did the shell 2mm thick.

0.14 layers, Solid infill (not full). No support. High speed (the only thing I'm scared).

Yea I also have a license of moi, but I normally work in Rhino...

- did you gain an speed improvement from hollowing the thing out?

- have you checked how much time you are actually saving by using the Fast option ?

just curious

Andreas

Still rafting, can't check improvement in movements.

Fast option 12h, Normal 1d. In my previous experiments the gain was much less.

Correcting: Actually 12h46 High Speed,  17h42 Normal Speed

This is the result with Netfabb hollow.

Ultrat

0.14 / high speed / solid / no support / zero cooling

Better surface

Attachment 480 not found.

Strange pattern (I forgot to check random seams)

Attachment 481 not found.

Still warping...

Attachment 482 not found.

I'm pretty convinced that the gap/seam problem on the vertical wall is due to the profile/slicer/toolpath and UltraT.

as for the warping...do you use anything on the platform? glue? abs slurry? I generally use the latter and I stopped seeing the raft lifting from the platform

although  I should mention that I havent done a large print in a while.

The cat I printed a few weeks ago was done with z=ultrat as well and I havent seen this kind of issue with it but spills yeah, lots of, unlike the z abs prints I am doing now which dont present that problem…so perhaps Julia is right and there must be something wrong with the z ultrat profile and the slicer?!

What do you mean, "perhaps"? ;)

Marco, I am using glue, which worked well with smaller (but not small) Ultrat impressions.

My final attempt will be change the orientation of the model on the platform. Perhaps there is a sweet spot.  :)

haha Julia  :P

  

I'd suggest you hollow out the bottom if you haven't already.

print the bottom as a separate piece.

also: I thought the UltraT stuff was supposed to prevent warping?

This kind of warp with an enclosure, glue, and a leveled bed doesn't bode well for UltraT.

I'd be curious to see how you do with printing the thing in ABS with the same settings.

I guess you already tried abs slurry?

generally I would say that i would not expect that behaviour with ultrat…

another thing would be to heat your enclosed m200.

I built myself a temperature controlled 100 W heating element to keep my inside temperature at exactly 40 degree Celsius. … but we’re getting OT here ☺

Well... last attempt (rotated 90º) almost ok. But still some warping, less but still present.

Starting now with same specs and orientation but with a hollow on the bottom, as Josh suggested. 

And with ABS slurry, follwing Andreas suggestion and returning to my previous habits, before I changed to glue stick.

Bed leveling reading as:

Front -0.2 / 0

Center 0.2

Back 0 / -0.1

Specs:

Ultrat

0.14

Solid infill

High Speed

No support

40% fan

Random seams

11h printing time

Fingers crossed!

Good luck!

There seem to be more issues with the current Ultrat profile.

I'm printing a larger part right now with normal speed, 0.19, and Ivory Ultrat and the seam is brown. Only the seam...an nice brown line over the whole part....everything else is beautiful....no other brown spots.

Could it be that the newly introduced slower perimeter speed (to avoid ghosting) is a bit too slow when doing the seam movement?

Nozzle is almost new and was very clean when starting the print.

Did anyone else see this?

488

seam.JPG

Just started a 30-hr UltraT print (fast speed) - I'll let you know Monday :)

OK, but I'm using normal speed...we'll see. My print is 22hrs... :D

Did anyone else see this?

I saw. (quite the same...)

[sharedmedia=core:attachments:481]

I saw. (quite the same...)

This looks much worse than mine... I only have a brown discoloration...the surface is perfect otherwise. 

Print Report: Succesfull!

Perfectly stuck to perfboard

Attachment 494 not found.  

Flat

Attachment 495 not found.

Comparison to previously best print

Attachment 491 not found.

Just a curiosity, inside the hollow

Attachment 493 not found.

Small blobs, as shown by Marco in another post, (easily removed).

Attachment 490 not found.