How do you make hollow spaces like bowls, tubes, or hollow boxes?
claybweatherfield_4132d1eed9
Posts: 1
I used to know how to do this once upon a time. How do you use an object to create a hollow space in another object? For instance, using a cylinder inside a larger cylinder to create a tube. Thank you very much in advance.
Post edited by claybweatherfield_4132d1eed9 on
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In what application?
Are you attempting to model one?
In Bryce you would use boolean operations, one negative smaller cylinder inside a larger positive cylinder would create a tube.
You might try Sculptris as well; its free and artist friendly. So you would create a cylinder primative in DAZ; export the obj. Import to sculptris. Erase the faces you need to make a bowl or tube. In sculptris your mesh becomes a virtual clay so you can do alot of work here. You can also mark up UV texture maps; but I would do the hard work in ms5 or ps; reimport the finished obj to DAZ
Now this is odd, it has been my experience that my sculptris obj spawn under the floor in daz. Just move the to world center export/reimport as obj this will zero their translations; and boom you now have a prop. As my main use for DAZ is a virtual model for Drawing/MS5 I've really come to love the primatives functions.
_also _Blender _``~...
Wings 3D, easiest modeler to learn. http://www.wings3d.com/
The best program for hollowing out 3d models I've come across is 3DS MAX, which has a very robust binary subtraction algorithm. If you use a different program, such as Blender, you're better off building up from thinner planes. If I wanted to make a bowl in Blender, I'd shape a sphere into the shape I wanted (removing the top half of the vertices as necessary) then extrude the interior or exterior and fill in any gaps. For a hollow box, I'd build it as a set of planes, then extrude them to make the sides.
I wonder if I'm not understanding the difference between a cylinder and a tube? Seems to me they are the same thing! Or are you putting more emphasis on the THICKNESS, eg. in the Hexagon program a primitive cylinder is like a thin shell - no thickness. If I'm not mistaken cutting holes (in a solid cylinder say - in DAZ Studio a "cylinder" is usually capped on both the top and bottom, like a can of soup) is a boolean operation.
I'm not super-double-plus-good at screenshots but I'll try and arrange several of the operations on my screen here using Cut and Paste.
In Hexagon, if I'm not mistaken "sweeping a line" to conform to a circle yields a tube. In the first representation attached there is a Hexagon cylinder, open at both ends, plus a vertical line and a circle. You position the circle on the line and then use "sweep line" function to make a long thin tube... arrrgh, it doesn't seem to always work for me so I've placed a working example of it in the second attached image, sorry.
You can put a bowl-shaped cap on a cylinder by selecting of of the edges along the rim, and then choose "loop" (red arrow) and the entire rim will be selected. Fast Extrude this out a bit (see Fast Extrude in the Hexagon manual) and then draw the new loop in a bit, in effect curving it inwards to form a sort of cupola. You can close off the cupola, then flip the object over, delete a few sections and presto, a thin "bowl". Alternatively pushing the rim back down into the object produces a bowl effect (the example for this is on the lower right).
In my second screenshot here I've drawn a small circle beside my asterisk or star-like arrangement of several lines, and then I "swept" one of the lines to make a thin tube. Once you've swept you can continue to move the mouse or touchpad to continue sweeping the line while you lengthen the tube. You can even zig-zag all over the place - the "tube" shape that you're making out of a line and a little circle keeps going, like a sculpture made out of plastic soda straws.
Anyway I found this tricky to explain but I hope it helps you at least a little. Again the first illustration shows four or five operations copied and pasted across my screen, but the line and circle failed to "sweep" for me sorry. The second picture shows the desired result but then my finger got stuck on the mouse button.
A tube is a hollow cylinder, while a cylinder has closed top/bottom.
Hello !
Thank you for the topic ! I just posted a topic about primitive as well, but about texture. The programs you guys recommended are quite interesserting, Wings 3D and Blender are free open source, 3ds max has only a free trial. I'll try Sculptris, it is not open source and seems to be basically an advertising for Zbrush, but still free and looks the less tedious interface wise compared to the others :) Let me know if I'm wrong.
Thank you again community !
Ok, thanks for clearing that up... As far as I know -- which arguably may not be much! -- of the "two types of cylinders" that can easily be generated in DAZ Studio or Hexagon, the Hexagon one may be better for modelling a quick bowl shape. My reasoning is that gradually drawing in the top rim or loop of edges, of the Hexagon type, open-ended "cylinder", and then extrude a bit more and repeat etc., yields a quicker/easier/faster/better bowl shape and you don't have to "cut" anything, at least in the early stages. The "bicycle-wheel-spokes-emanating" mesh that Studio generates would make a great hat for the Tin Man though!