Zbrush for architet

[system]

hello every one
for years i was jealous from every one using Zbrush
so i decide to give it a shot
after month of watching endless tutorial i learn the basics
now i found this carved rock pictures i like to do
i start with the simplest one

so i start in 3ds max the basic shape of the model and give it a decent amount of edge

and then in zbrush i began slice the rock by using cliprec brush to slice the half of the arch and got this

but when take close look it look like this

so what i am doing wrong
please help
and little instruction for the best steps to begin such project

Attachments

[beta_channel]

Clip curve simply pushes the geometry back on a plane, which is what you’re seeing.

You want to use Trim Curve to lop that off.

[system]

thanks for the reply
after using the Trim Curve and Trim Rec brushes mostly Zbrush crush
but when it does not crush I Got even stranger look

i upload the model if u want to take a look

https://www.mediafire.com/?0622bnh8ob4epjt

[Thor]

For something like this, you probably want to get rid of the interior geometry.
I don’t know anything about 3DSMax, but in zBrush, I extracted your model so I could work with just a good shell.
This way, I could mask and group and close holes.

Then you could dynamesh it for sculpting.

Attachments

[system]

big thanks for yr effort

do u mean i have to extract the model as shell in zbrush ( which i tried a lot with the same result for me ) unless there is some tricks here i don not know

or re-model the rock in 3ds max in way it have no interior geometry

[Thor]

do u mean i have to extract the model as shell in zbrush ( which i tried a lot with the same result for me ) unless there is some tricks here i don not know

The problem (I think) with the slicing/trimming operation on your current .obj file is in the “close holes” part of it, and some of the curved surfaces on your model.

Slice curve:

Delete sliced geo:
(You can see the interior geometry)

Close holes:
(Problems)

Using an extracted outer “skin”… after slicing and closing holes - :
(better - I only selected the outer polygroup of the extract)

I’m sure there’s a much better way to do this… there must be a way in Max to get a clean .obj export (without polygroups and interior geo)

[system]

thank u again
i did what u say and it work like charm
i export the model from max as clean as possible and

but some times i got the same result so i do ctrl +z and slice again by millimeter aside and it works
strange for me but i am still beginner , I’m sure there is good explanation for that
and here is an example

by the way i did not use close hole , it closed by itself