Change the Lineweight of an Object
 
 
 

You can change the lineweight of an object by reassigning it to another layer, by changing the lineweight of the layer the object is on, or by specifying a lineweight for the object explicitly.

You have three choices for changing the lineweight of an object:

If you want to set a specific lineweight for all subsequently created objects, change the current lineweight setting on the Properties toolbar from BYLAYER to a specific lineweight.

See Also
To change the line width of a polyline, donut, rectangle, or polygon
Commands
System Variables
Utilities
Command Modifiers