Cut boxes in 3d

[hvitost]

Hi!

 

Benn looking around in here but i couldnt find anything that helped me, so;

 

Im drawing a simple warehouse with a circular glas-facade, and i am using boxes for everything. Now, i want to cut the roof-boxes so that they fit with the circular wall...

Ive tryed subtract, intersect, slice but nothing gets it right. Or i may be doing it wrong

 

posting a screenshot for you to see. Thanks in advance!

[MSasu]

So you want to remove the canopy-like part? You may use SUBTRACT command for that, followed by a SOLIDEDIT with Separate option.

[JD Mather]

What book or tutorials are you using to learn 3D?

[ReMark]

One option would be to slice the roof with a surface constructed from a curve that matches the interior face of your front wall. Sort of like this:

 

 

I turned off the building layer so you could see the roof better.

 

So we have the roof with an arc (left side). Roof with extruded arc (middle) which results in a surface. And we have the sliced roof (right side). Get the idea?

Edited November 4, 2013 by ReMark

[hvitost]

So you want to remove the canopy-like part? You may use SUBTRACT command for that, followed by a SOLIDEDIT with Separate option.

 

I tried to do this but either the wall or the roof dissapeared. So i made a new box with a circular edge and extruded it instead. Its not a 100% fitted, but close enough for the purpose. Used your steps when making the new box, so thanks

[ReMark]

Close enough only counts in horse shoes and grenade throwing. It shouldn't be your modus operandi when creating 3D models.

[hvitost]

One option would be to slice the roof with a surface constructed from a curve that matches the interior face of your front wall. Sort of like this:

 

[ATTACH]44980[/ATTACH]

 

I turned off the building layer so you could see the roof better.

 

So we have the roof with an arc (left side). Roof with extruded arc (middle) which results in a surface. And we have the sliced roof (right side). Get the idea?

 

 

 

 

Yeah, think i get it. And it was almost like this ended up doing it. My circular wall isnt exactly circular, so i had to let the roof overlap the wall a bit. Ill be doing it your way from the beginning next time

[ReMark]

If it isn't right go back and do it again. Practice will eventually make perfect.

[nestly]

I always prefer to use the INTERFERE command because there is no need to create or copy any objects to complete the operation.

 

Procedure:

INTERFERE command

Keep "interference" object(s)

Subtract "interference" objects(s)

Separate the solid into individual pieces

Delete unneeded parts

 

[hvitost]

Ive been trying to do this now nestly, but when im going to separate it says : The selected solid does not have multiple lumps. ??

[nestly]

That message probably means you did not successfully subtract the "interference" object, or the "interference" did not extend all the way to the edges of the "roof"

 

 

[ReMark]

hvitost: Your roof is pitched isn't it?

[hvitost]

That message probably means you did not successfully subtract the "interference" object, or the "interference" did not extend all the way to the edges of the "roof"

 

 

[ATTACH=CONFIG]44985[/ATTACH]

 

 

Alright, that might be one of the problems. Ill check it out first thing tomorrow morning

[hvitost]

yup, about 2-3 degrees or so. Is that a problem?

[ReMark]

yup, about 2-3 degrees or so. Is that a problem?

It could be depending on how you went about creating the roof in the first place. We don't have access to the drawing so it's anybody's guess. Sometimes the devil (a problem that occurs) is in the details.

[hvitost]

Close enough only counts in horse shoes and grenade throwing. It shouldn't be your modus operandi when creating 3D models.

 

Hehe, agreed. But its not going to be a work-model, its a simple sales-model that needed to be sent today Now that its done i can be a bit more precise

[hvitost]

What book or tutorials are you using to learn 3D?

 

none...

 

Have been using Revit for a couple of years, and felt i had a bit control there. Then, i changed jobs and now im learning AutoCAD by myself

Have got a norwegian book though!

 

You got any books to recommend?

[JD Mather]

Have been using Revit.... ... now im learning AutoCAD...

 

Ouch! That must feel like going from drawing board to cave wall.

[hvitost]

Alright, that might be one of the problems. Ill check it out first thing tomorrow morning

 

Hey guys. Long time, no update...

 

I did check this out and could not find the reason why this did not work. I made sure the "interference" did extend all the way to the edge of the roof, but i still couldtn do it. Maybe youre right about the pitching ReMark, i dont know. So, i got frustrated, accepted the almost-there-solution, and took a break from this. Will not be trying any further either, untill a similar project comes along. Ill try to do it correctly from the start next time..

 

And, yes JD Mather, it does feel like that. What i do in 2 hours in Revit, i nedd 2 days to do it in autocad. Guess ill have to try convincing my new employer to belive that, and get a licence for Revit as well

[ReMark]

We're not getting anywhere it seems so my suggestion would be to attach a copy of the drawing to your next post.