It's been a while since I last used AutoCAD and I'm struggling with a simple (I guess) problem. I tried the search but maybe I am looking for the wrong terms :
I created a closed 2D shape with the line tool and extruded it. No I want to "fill" the 3D object so it's a solid piece. But I can't figure out how to do that and so I'm stuck on a shape with "walls" around it.
>> I created a closed 2D shape with the line tool
You started with the wrong "tool", if you would have used polyline (with last option "CLOSE") or the command _RECTANGLE the extrusion of that would have created a solid.
Now, to get your lines extruded as solid you can use the command _PRESSPULL (for details look >>>here<<<).
HTH, - alfred -
Different people use different methods. My preference after I create something in 2D with lines and arcs, is to use the BOUNDARY command to create a closed polyline or region using a specified point inside an enclosed area. (I use regions when I want to apply a 2D Boolean operation such as SUBRACT.) Then, I typically use the EXTRUDE command (Solid mode) to generate a 3D solid, or less frequently, SWEEP along a path.
Again, everyone has their favorite methods and tricks.
AutoCAD UA Lead
San Rafael, California
>> Different people use different methods.
>> My preference after I create something in 2D with lines and arcs, is to use the BOUNDARY command
If you have a drawing already holding thousands of curves you will be thankful for everyone who has created concatenated polylines instead of lines/arcs. Because if you have crossing geometry there is no way to get BOUNDARY working with 3 clicks.
So my argumentation is quite easy:
Now what's the better idea? For me (and my students) the poly is the option 1
- alfred -
Well, that's why I prefaced my suggestion. A drawing with thousands of crossing curves sounds extremely complex. You choose the tool or method for the job.
...after I create something in 2D with lines and arcs, is to use the BOUNDARY command to create a closed polyline or region
What if the boundary consists of lines, polylines, arcs and splines?
Adding one or more splines to the mix of objects that enclose an area forces the Boundary command to create a region object rather than a closed polyline. You can combine and extrude the resulting regions into 3D solids.
If you open the Help topic titled Draw Splines, the first illustration is the driveway and front walk that I designed for my house. I used the Boundary command to create a region from which I was able to estimate the amount of concrete that I needed.
Incidentally, getting the spline from the drawing to the ground was . . . interesting. I asked my architect neighbor how people usually did this, and he had this funny smile on his face. Undeterred, I got two tape measures, some metal spikes, a garden hose, and some white spray paint.
Can you guess how I did it?
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