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Create a Fillet with a Radius
Tip# 4109 By Jack Nardi On 29-Apr-2013
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Categories : Curved Objects
Software type : AutoCAD 2014
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Here is another way the AutoCAD fillet tool can be used.

Jack Nardi shared this technique to create a radius between parallel lines in AutoCAD.

“I often need to generate 2D linkages, and I prefer a radius at each end. If you draw a line and offset it a specific distance (mine are usually 1"), then use the zero fillet to pick the adjacent end points, AutoCAD will add a radius to the end so you can generate a closed linkage quickly. This function has been part of AutoCAD for many versions and was originally listed in their reference manual.”

Notes from Cadalyst tip reviewer Brian Benton: The AutoCAD fillet tool is very useful. This tip is another way it can be used. In this case, AutoCAD creates a fillet between the two selected lines. They are parallel and the ends line up. The Fillet command will create the arc at whatever radius is needed, with no thought required from the operator, and draw it.

 
 

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User comments
Comment by Cooper,Kent
Posted on 2013-04-29 11:01:08
A little further clarification: The fillet radius does not need to be zero to do this; the current radius is irrelevant when the selected objects are parallel. Also, their ends don't need to be aligned as they are with two Lines resulting from an Offset. If they don't align like that, the one picked first will determine the position of the end-closing Arc, and the other will be made to align accordingly.
Comment by Damman,John
Posted on 2016-11-29 16:01:12
I use the fillet command when tracing streets from orthophotos. I'll draw the edge polyline or centerline on one street and offset accordingly. Then I'll draft the cross streets. After trimming the street edges at the intersections, I'll use a specific radius and fillet the lines. For roadways, it's generally 25 feet in urban areas and larger on rural highways. No guess work and no "humps" at the P.O.B. and E.O.C.
Comment by Damman,John
Posted on 2016-11-29 16:01:27
I use the fillet command when tracing streets from orthophotos. I'll draw the edge polyline or centerline on one street and offset accordingly. Then I'll draft the cross streets. After trimming the street edges at the intersections, I'll use a specific radius and fillet the lines. For roadways, it's generally 25 feet in urban areas and larger on rural highways. No guess work and no "humps" at the P.O.B. and E.O.C.
Comment by Damman,John
Posted on 2016-11-29 16:01:32
I use the fillet command when tracing streets from orthophotos. I'll draw the edge polyline or centerline on one street and offset accordingly. Then I'll draft the cross streets. After trimming the street edges at the intersections, I'll use a specific radius and fillet the lines. For roadways, it's generally 25 feet in urban areas and larger on rural highways. No guess work and no "humps" at the P.O.B. and E.O.C.