How to quick select objects on multiple layers. Previously, I was using Qselect, I was trying to select all the objects on more than 9 layers, and for each layer I had to run through the command and just add it to selection set. FILTER also gets the job done, after all these practice, I thought there could be an easier way to get this done.
Please visit the ZWCAD Forum for solutions: http://www.zwsoft.com/forum/thread-3693-1-1.html
See also:
Using QSelect in ZWCAD to Filter Selection Sets
How to convert an ellipse to a polyline
CAD users might encounter the following situation while they are using ZWCAD: They need to edit the ellipse object like polyline, but the properties of ellipse are not like the properties of polyline. So how can we do this if we want to join an ellipse arc, line and other objects into polyline? In the following content, we will give you a brief introduction on how to change an ellipse to a polyline.
Approach 1: Open ZWCAD, and then set PELLIPSE to 1 (or ON)
The PELLIPSE System Variable is used to controls whether the entity drawn with the ELLIPSE command is a true ellipse or an ellipse made up of polylines.
0 Draws a true ellipse.
1 Creates an ellipse made up of polylines.
PELLIPSE =0
PELLIPSE =value 1
Approach 2: offset the ellipse object
After an elliptical arc is created, we can use Offset command to change it to polyline. Offset the elliptical arc to a certain distance, and then delete the original elliptical object, after that run offset command again to offset the elliptical arc back to original position, by this way, the elliptical arc is changed to SPline object.
Then we can use command Flatten to change the SPline to Polyline, and use command Pedit to join the polylines.
Both two approach are quite easy to convert the ellipse to a polyline.
Related Questions
How to Draw a Cone with Round Top and Square Bottom
Many CAD users may be very familiar with the object—cone with round top and square bottom. Here I would like to explain to some of CAD beginners what this is and how to draw it. First of all, this special cone is often used as a transition part to join together square and circle pipeline. Next I will use ZWCAD and ZW3D to draw this object.
A:ZWCAD
1. Draw the following graph and adopt the isometric view to finish the rest of operation.
2. Lift the circle inside the square for certain height in the direction of Z axis
3. Use the command Loft and the following graph will be generated.
4. Solid edit the graph and then color it
Execute the command of Solidedit and choose the 3d oject. When there’s reminder that the 3 surfaces are found, hit on the ENTER button and type in “a”, choose the outside surface you would like to keep as noted below.
With the above steps, we have finished the drawing of a cone with round top and square bottom in ZWCAD.
B: ZW3D is very cost-effective CAD/CAM software. In ZW3D, we can use the same steps as above (sketch—loft—solidedit). But it is somewhat difficult to unfold this model through above drawing steps as generally speaking sheet metal will always be unfolded for measurement. When outside contour only has one surface we can use Unfold Surface in Curved Surface to achieve it, while when there are 8 surfaces in the outside contour, regardless of the thickness, we will not be able to find the way to unfold the object.
Users can choose either ZWCAD or ZW3D to draw this object. The two CAD software will both meet your needs.
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