There might be times when you need to use fillet or chamfer and you do not want these tools to trim the objects. This method will leave the original objects intact and simply apply the fillet or chamfer.
Here’s how:
- Shown below is the fillet command
- F <enter> to start the fillet command
- T <enter> to get to the “trim mode”
- N <enter> to set the trim mode to “No Trim”
- Then set you Radius for the fillet and apply the fillet.
Normal Fillet behavior
Fillet command with the trim mode set to “No trim”
Note: When you set the trim mode for fillet or chamfer these tools share that trim mode. In fact the system variable for this setting is TRIMMODE (shown below).
This system variable is stored in your computer’s registry which means that this setting will carry over to other drawings. Just be aware of this….
AutoCAD Tips 
Greg,
Came across your website, and was hoping you could help.
Using AutoCAD Architecture 2013, and tried the Fillet command:
Went to command prompt typed F(enter) and ended up with the
FACETDEV :Set new Facet Deviation
So I pressed escape twice and tried it again, and lo and behold I get the same thing!
If I actually want to activate the Fillet command I am forced to type in the entire word…I miss my F command shortcut.
I have gone to the Ribbon–>Manage–>Customization–>Edit PGP and found:
EXT, *EXTRUDE
EXTENDSRF, *SURFEXTEND
F, *FILLET
FI, *FILTER
The above is a small sample of the PGP file, it LOOKS as though the F, is already associate with Fillet? AM I WRONG!
Any and all help would be appreciated.
Paul
It sounds more like the AUTOAPPEND “feature” (which is more of an annoyance)
In the link below, I show how when I started typing MIRROR, it tried to guess what i was doing and append my typing. Which can start the wrong command.
See this link to turn it off.
Let me know if this works
https://autocadtips.wordpress.com/2011/03/25/new-auto-append-in-2012/
~Greg
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