"Are the boxes supposed to make holes in the base shape or protrusions?"
No the boxes should just the in place and printed as is ...maybe when I did the merge it did mess it up even more :/

Attached pic is a Boolean merge with line to split is the way I do it to split my model ...with simpler items no issues..with other things abit more complex I always have an issue :/


This should be one before split in the middle.
All the ones I have , have the boxes already.
Thanks you!

Thanks Matadem, this one will be easier to work with. Are the boxes supposed to cut depressions into the sweep object or are they supposed to be protrusions sticking out from it?

- Michael

One thing I see is there is an extra surface object hanging out right in the middle of the other pieces:





If that is getting selected as one of the objects being booleaned that might not be good.

- Michael

Hi Matadem, so on the "no split.3dm" file your geometry looks all good and ready to go, you were almost done. you probably just need to avoid getting that additional surface involved in the booleans.

Try these steps:

1. Hide all curves so they aren't getting in your way. Click here:


2. Hide that open surface by clicking just below on Types > Surfaces:


3. Select all the objects, it should say 24 solids are selected:


4. Run Construct > Boolean > Union, those should all combine into one single solid:


You can now draw a line and use it as the cutting object in boolean difference to slice it in half if you want.

Let me know if you still have trouble.

- Michael

Good day.

Thank you for the help however I still need some help as I could not figure out the best way to do this.
I printed the items and they fit extremely well however at a corner it has a gap about 2mm..
I have attached a picture where the green lines are an extruded edge about 2mm thick should start from zero and or from the surface.
Where the blue line and arrow is it should go up about 2mm then end up to the other green line back to zero and or same as the surface.

I did not want to flow it again as I am afraid to mess everything up since it fits nicely..Please let me know what would be the best way to accomplish this.

Thank you!

Hi Matadem, please post the .3dm model file with the green and blue lines in it. It's difficult to figure out what is going on with something like that from just a screenshot, I need to be able to zoom in and look at it from different angles to understand.

- Michael

Good day
see attached on the pic the blue line that should go about 2 mm up and should be about 2mm thick extruded.

Thank you!

Hi Matadem, do you mean something like this, done here with sweep?







- Michael

Good day.
Yes that is what I am looking for.

Hi Matadem, here is a version with that sweep put in, I built a new one that extended a bit over to make sure it could intersect well and then trimmed away parts so the sweep could fit in:



- Michael

Hellow all/ @Michael,

I was working on a mesh and I couldn't make a solid out of it and I don't know why, could you please take a look at it? I even tried to reconstruct it using "rebuild" script but again no Solid!

Hi Psygorn, if you highlight naked edges (instructions here: http://moi3d.com/forum/index.php?webtag=MOI&msg=10582.13 ) this is the problem area:



Zooming in to this area:





That's a gap between edges there that is just a little bit too far apart to be joined together.

The top looks like it's ok it's the bottom where the pieces are not close enough together to be joined.

- Michael

Hi Psygorn, I've attached a version of your object here that is a solid now. I deleted the faces around that problem area, did an "untrim" to remove the current trim boundaries that were kind of messy with a couple of little edge fragments in them, then lofted between the 2 semi-circles, joined those pieces together and then used Construct > Planar to cap off the flat pieces.

- Michael

Hi Michael,

Ok, Thank you so much.

Thank you Michael,

I was able to repeat the process.

However, I want to ask you something do u know if I a mesh which is joined surfaces and pretty small gap is printable or not?

Hi Psygorn,

re:
> However, I want to ask you something do u know if I a mesh which is joined surfaces and
> pretty small gap is printable or not?

It depends on the particular situation but probably not.

It's more of a problem than just a gap - the triangulation generated for the STL file will not have watertight synchronized vertex structures across the unjoined edges.

Maybe some slicers could tolerate that but I kind of doubt it.

- Michael

Hi Michael,

Ok I see. Yet I can say that I had experienced it before (one time I had a STL file and it was not water tight but the printing machine was able to print it! However, I have to say I did not discover the mistake until the piece was printed. I think I got lucky!) So, as u mentioned I think it depends on the situation and I can say it is safe to have the 3D model water tight.

Thank you for your support.

Good day Michael.

I finally got some time work back on this.
Since I wanted a 2mm edge so I have projected a closed curve on the model so I could get the desired lines.
And then try to sweep it but I could not get a solid out of it. pls help.

see attached file.

Thank you!

Hi Matadem, the curves to sweep in your attached file are not suitable for making a solid just by themselves. It would be too thin at the ends and be essentially the same as a self intersection in those areas.

To incorporate this into the main model you would sweep to build just a surface and then trim away surrounding areas to make a place to join it in.

I've done that with the model that I attached in the above post here:
http://moi3d.com/forum/index.php?webtag=MOI&msg=10586.14

Was that finished solid that I posted there not suitable for what you need?

- Michael

I did another try here
2 small rectangles at the end a bigger one in the middle which the rails goes into the middle of it...sweep then move this whole solid into my model pushing the other half into my model.
That seems to work but probably not the best or efficient way to do it?

Michael what you shown me was extremely useful, the reason I wanted for a 2mm thickness so it could be easier to sand when fitting the 3d printed item.