FILLET command in 2D
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Author | Murat Şenel |
| Profession | Building Draftsman | |
| Location | Ankara, TURKEY | |
AutoCAD 12 and higher versions
This command combines drawings entities ( line, arc, polyline, circle etc. ) from the points that there is a possibility for these entities to connect and creates a corner. Entities that are used for FILLET can either be lengthened or shortened. When using the command, we should select the entities from their sides where we want them to remain on the screen. Their parts which are out of the selected side will be cut from their connection or intersection points.
We can use the command by using both Modify menu or by entering “F” from keyboard.
Fig. 1 Entities may lengthen or shorten during the connection.
If we enter “0” (zero) for the “Radius” value, then a dull connection is created. A dull connection is a connection where a sharp corner is formed. If you enter a value for “Radius” option in Fillet command, then an arc is used for the connection of entities. If you enter a radius value for the fillet command, then this value is kept and used as default for each time you run the command.
Fig. 2 If an arc will be used for connection, then a radius value must be entered.
If you are going to combine entities that were drawn by using POLYLINE command, then for using the same radius at the all of the corners, you can do this at once by using the POLYLINE option.
Fig. 3 you can get use of FILLET for a polyline that was drawn previously.
When FILLET command is used, drawings entities that are longer from the intersection point and that have a possibility to connect, then they are shortened. Similarly, they get lengthened if they are short. In order to use this feature, you can use TRIM option when you enter FILLET command. If you don’t want this feature, then you must use NO TRIM option. By this way, you can avoid losing original entities.
Fig.4 You can get use of TRIM option or not.
Next question is how FILLET works with parallel lines. Probably the most interesting surprise of FILLET command arises here. As you know, there is no possibility for the parallel lines to connect, i.e. it is assumed that they don’t intersect even at infinity. If you use FILLET command on parallel lines, then distance between these lines will be accepted as the radius and the two lines will be connected with an arc. No matter what the default Radius value is in the FILLET command, this does not change the result.
Fig .5 First line that is drawn is reference when Parallel lines are used.
Rectangle – Fillet (Rectangle, corners of which is rounded)
Fillet option inside Rectangle command makes the corners of rectangle rounded according to the radius value given. When rectangle command is entered, you can access to fillet sub-command by entering “F” keyword. After entering a valid radius value here, then you select the other corner of the rectangle. Then drawing of rectangle is completed.
Fig .6 Try drawing a rectangle once by this way.
That’s all for today. Have a nice day…
Technorati Tags: AutoCAD, FILLET, modify
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June 26th, 2007 09:05
[…] has already explained about FILLET in his article. In this article, I will give you some additional useful tips that you can use […]
July 1st, 2007 15:03
thank u
July 1st, 2007 15:06
hello, Murat Şene
i have one doubt why do the grips changes for entities after filleting it
by the ways thanks for your information
July 1st, 2007 15:07
how do i use multiple of fillet command
July 27th, 2007 09:26
i want to know why we use corner instead of corners during designing of any machine or tool ?
August 6th, 2007 10:45
These are extra functions on fillet command that we might be didn’t realize it. Its really useful. Thanks/Terima Kasih!!!
August 7th, 2007 05:53
Dear Arjun,
I just wanna try to answer. Murat, correct me if I’m wrong. The purpose of multiple fillet command is to rounds the edges of more than one set of objects. The Select First Object and the Select Second Object will prompt repeatedly until you press ENTER to end the command. That means you can continuously make fillet with different radius (if you change the radius) in single command.
August 24th, 2007 08:47
[…] are drawn at once) as one single entity. For this reason, we cannot use some editing commands ( FILLET, CHAMFER, BREAK etc. ) on MLINE entities. Instead, there is another tool named as ‘Multiline Edit […]
October 17th, 2007 07:59
[…] As I told you, it is even easier than 2D FILLET. […]
January 13th, 2008 09:55
I am trying to use the fillet command to fillet a 470×470 square with a 3 fillet. Instead of being a curved edge, it makes an edge with 3 sides that does not look curved at all. If I make a really huge square and a very time fillet, it looks just like a chamfer and has only one line. How can I make the fillet look like a fillet no matter what the size of the object is?