Fillet Command create cirlces

[Matho]

Hi,

I'm having a problem with the fillet command. I'm not sure what i'm doing wrong but most times when adding a fillet, it create a circle. The shape is that of a boat hull. I have attached an example. Your advise and thoughts are appreciated.
Matho

[azzro10]

its because your trying to fillet between a line and an arc so autocad doesnt know where to trim the fillet circle.

[CarlB]

Fillet doesn't work as well on polylines as lines. I'd suggest exploding, fillet, join (pedit) to polylines when done.

[azzro10]

it will still happen when he explodes coz theres an arc involved

[PS_Port]

Matho have a look at the grips on your lines.......
the sides are not symmetrical....
This being a boat hull and all..should the sides be the same..?
I would suggest drawing one side only "about a centreline" then mirror..
you could then join them with pedit if you like...

[Matho]

Matho have a look at the grips on your lines.......
the sides are not symmetrical....
This being a boat hull and all..should the sides be the same..?
I would suggest drawing one side only "about a centreline" then mirror..
you could then join them with pedit if you like...
I was trying to different things such as break, explode, trim etc in this particular case, hence the uneven poly. I'll have to build a bridge and keep on mirroring. Thanks

[chrisdarmanin]

i managed to do it right... its the way you select it, not too far away from the fillet or not to near

[eldon]

Or perhaps draw a circle with the TTR option, and trim to suit :D

[BIGAL]

Been my pet hate for years fillet two arcs ie 3 curves autocad draws an S bend.

Our civil software recognises this problem as there are 4 soloutions and asks for an approx centre so you get the correct answer.