Zero extrude.

How to made zero extrude?

Hello.

Just type 0 in the text field in the Extrude window. You'll get a prompt asking if you're sure you want to make this kind of extrusion.

Thanks, but I use stream line tools for extrude, without this menu where you can add 0.

In this case Polygon(or Edge)_Extrude_CursorDirection#(nmb) gives you this option:

Polygon_Extrude_CursorDirection#:    Drag to extrude highlighted/selected polygons base on cursor moving direction. Alternatively, move manipulator can be used to control the extrusion direction. If not mapped to NMB, click to extrude SELECTION by 0 if it is enabled. Scroll WMB or hit a number key to change the segment number during the operation. To use individual polygon grouping, press down Space key before drag out, or tap Caps Lock key after drag out.

I'm not sure about other extrusions from StreamLine basic tools.

But how to enable - xtrude SELECTION by 0?

Thanks!

Good to know. Thank you Steve.