CHITUBOX Basic supports multiple 3D file formats, including stl, obj, cbddlp, photon, photons, zip, slc, wow, fhd, cwS, ctb, phz, svgx, lgs, chitubox, cfg ,
Out of these OBJ will be best.
Hi,
he has said they like .3mf.
also .step, though fears step is lots of .stl ?
is .3mf better than .obj ?
If ever there is a problem chitubox gets blamed, I recall saying dont use it then.
(Any Cubic Photon Mono x 6k) [not the 6ks]
latest firmware now and perhaps things better, (until another problem) but it was said the older Anycubic slicer was best. I think Chitubox dont talk to AnyCubic from the 9 months of trials most problems being chitubox related.
Steve
Oh yeah, 3MF is great. It is one of the most modern ones for 3d Printing.
If my object is more of a organic object I use step with my OrcaSlicer. It’s not mesh based like other formats.
Hi,
V5
I have chamfer edged within dicument tolerance by 0,01mm two crosses and the infinity symbol.
made one sea urchin have thicker arms and a new arraypolar.
made a new surface using planar tool.
Created new separate male bars,
a new surface that area and trimmed out the unwanted parts.
Fixed two bars acting up that wouldnt cut.
fixed the letter ‘a’
created new female slots
been very very meticulous.
zoomnaked none
selnonmanifold none
show edges non manifold none.
oh boy . 
look in properties, says invalid polysurface 
selbadObjects selects it.
what next to find where its bad ?
Just where is this bad ?
its doing my head in.
SR4 calibration sheet 3D NOnonManif chamfSrf MoveFce all elements JOINED together.zip (3.6 MB)
Steve
@Steve1 The surface selected below is “bad”. I found it by exploding your object, then using SelBadObjects. I don’t know why it is bad.
Hi, I just took this into v8 and when selecting the top surface it selected the rear one, it saw right through it,
I then used planarSrf tool and selected the entire border of it and nothing happened.
I havent even touched the outer border of this, only fiddled with items on its surface.
Hell knows why the simple outer border manages to now make a bad object.
spent an entire day to midnight on this, must get it sent off.
oh dear.
Steve
J3Dtech calibration PLATE SR2 45mm - BUhack.zip (1.8 MB)
Here is a hack with all the non-manifolds removed. It took me about 20 minutes or so, as I had to do a couple of tricky buts because Rhino doesn’t like doing BooleanUnions where there are non-manifold edges. Just to show it can be done with the method I outlined above.
But the main trick is to actually DESIGN the object so that it can be successfully 3D printed - that is to say avoid creating non-manifold situations altogether by building in overlaps at those spots from the start. You say you spent a day trying to fix that garbage, it would probably have been faster to take the original curves, fix them and make a new object.
Hi,
Thats what I did, I redesigned it with gaps where the non manifolds were.
used 0.01mm
used chamfers for the two crosses, and the infinity.
and used move face 0.01 on the bars, taking them away from the female slots.
redud completely the female slots.
the file I iploaded just now SR4 is designed with NO non manifolds. as you suggest…
here it is again.
SR4 calibration sheet 3D NOnonManif chamfSrf MoveFce all elements JOINED together.zip (3.6 MB)
but it has a badobject top surface and I dont know why, ditto David.
Steve
From what I could see, the boundaries were self intersecting.
Attached is a repaired object
SR4 calibration sheet repaired.zip (2.1 MB)
Hi Gijs,
Thats saved the day, got it off to him, so printing can be done.
Now how do I buy you a pint ?
I am so careful, at my max, and Rhino does things.
redrew it all, avoiding non manifolds then get another problem.
Is it just me or do other folk get this happen.
Just where was the fault ?
What is the procedure to visually show the issue ?
Steve
It’s not just you, these things can get tricky, esp. if you are doing a lot of modifications that are very tiny in relation to the modeling tolerance.
ExtractBadSrf selects the surface you pointed out as the bad one.
I then first tried UntrimAll with Keep Trim Objects, but that did not seem to work.
Next I used DupBorder on the surface and deleted the bad surface. When I tried to make a PlanarSrf out of the result, it showed me a warning of self intersecting curves. Proceeding was a bad idea, or I was too impatient, or both, so I killed Rhino and restarted and repeated up to the DupBorder part.
I then created a planar surface with just the outer curve, and Split the result with the remaining curves. Then joined everything back together.
To visually show the issue, after Dupborder you could run SelSelfintersectingCrv:
Hi,
@Gijs
I am being told the repaired file, that I then opened in Rhino8, and went selNonManifold and nothing selected, has non manifold !
Embarassing when I declare I have a good to go file fixed by an expert.
You and I are being misled by Rhino8.
Why is Rhino8 saying its ok and his progs saying non manifold.
I exported ot as a .3mf which is now the best way, forget .stl etc
The SR4 file that you sent me still reporting non-manifold issues. I’m unable to import 3MF files to blender that is the best tool to report these, but my Bambu Studio does report that they exist and Fusion 360 does too and was able to repair.
here is the .3mf file
the one from which its made is two posts earlier in this thread sent by you.
Zooming in at the area you show, the bar touches at its pointed tip the block with the female troughs in it.
is that where the non manifold is, looks a likely candidate, BUT RHINO 8 DECLARES IT OK.
OMG
SR4 3D calibration sheet repaired Gijs.3mf (706.6 KB)
so I fix that in V5, as V8 wont mergefaces there, V8 denying me progress, so using V5 again.
but having mergedface there, I run extractBadSrf, it wont let me select that surface.
Run selbadObjects selects that surface again.
I need to make a new surface you say, then tril all the bits out of it.
Any quick way of doing that ?
Steve
I already advised you what to do in another thread, namely to open it in PrusaSlicer and fix it there. btw, the fix is not really necessary, as the slicer has no issues processing it. In case you do want to fix it, it is really simple to do:
When opening the project in prusaslicer you’ll see:
notice the exclamation triangle next to the filename.
Right click that triangle and it starts repairing:
After that:
Done
If you really want to fix it, you can get rid of that non manifold chopping of a small piece of the corner:
Instead of 3mf, I exported it to stp and imported that into prusaslicer, without any errors. Also notice the better meshing for this object:
vs your 3mf which was based on jagged and faster I think:
In case you want to use this instead:
SR4 calibration sheet repaired2.7z (446.6 KB)
Hi, not sure why we rhino users have to use another prog to do what I had hoped Rhino has the capability to do.
I have then taken the one I fixed in Rhino5 , chopping the end off that bar, and opened it into R8, then exported it as .3mf to see what settings there are for QUALITY. and there are NO settings to choose from.
how become, is it that .3mf is in fact cruder for facets than stp.
Here earlier someone said .3mf is the best new kid on the block for 3D printing.
baffled and bemused.
Steve
It might be, but that still doesn’t mean you don’t need to verify your work. Therefore, my recommendation is to use step and load it in PrusaSlicer, check and repair there, and from there make the .3mf file.
name me one tool that can do it all. Rhino is not a 3d printing app. The app I linked to is open source, and free, and solves your issue.
Hi,
My recipient has opened your repaired2 .stp file and anycubic is showing errors and asking does he want to repair them.
he is unable to open it in blender as blender doesnt open .stp files.
Needs autodesk. not got that.
I am starting to wonder what is going on.
your .stp you say was declared ok by Prusa, why then is anycubic workshop3 then after that, declaring it wonky ?
Steve
I don’t know what Anycubic does with step files, maybe their meshing algorithm cannot deal with the file.
I advise you to simply follow the steps I suggested, doing the conversion yourself in Prusaslicer, so that you know the print file is correct. Export an stl from there, or the .3mf file, or both.
If you then import the stl back to Rhino and no errors are found, it should give you some confidence the file is ready to go.
btw: you could have saved yourself a lot of work and trouble if you had used the file I posted earlier here:
Hi,
I do like to fully see whats at fault and make sure my rhino file is healthy. so wanted to fix it myself to better understand design issues etc.
My recipient is to do this …
- run it yet again through prusa
- fix if not healthy
- export as stp (cos better looking dome area etc facets)
- see if anycubic happy, else get any cubic to then fix it.
- then print the flippin thing !!
- I will get prusa to do what rhino cant, until rhino is improved.
will send as stp from now on as meshes look better .
if then converted to .3mf will they remain nice or go more faceted,
Steve