AutoCAD LT generate Circle from arcs

[Anonymous]

Hi

I receive often drawings where circles are formed trough 2 or 3 arcs. Is there a command in autocad LT to convert it  to 1 circle?

[jayhar]

Hi,

did you try JOINT command ????

Thanks

Jayhar.M.J

[Anonymous]

No JOINT command in LT. tried JOIN but it generates one arc, still not a circle

[jayhar]

Can you please upload AutoCAD 2013 format

and follow this link https://grabcad.com/questions/arc-convert-to-circle-in-autocad

Thanks

Jayhar.M.J

[cadffm]

Two things:

1. " but it generates one arc, still not a circle"

An ARC ? In my test you get an arc just if ou are far away from a fill circle, please upload ONE sample.

(all rules "how join command works, depend of selected objects" are too much here and now)

2. If you have multiple times "two arcs as circle"

 The way by JOIN only works when selected just one "circle" (= two arcs).

  Hint: Command: multiple, join, select your two arcs<space hit><space hit>

            select your two arcs<space hit><space hit>

            select your two arcs<space hit><space hit>

            and so on until you cancel[ESC] the loop.

 when you select multiple situations like this at once, Join creates closed polylines.

As LT User i would do what i whould often do:

a) Using DXF-ascii Format and do the change by texteditor

 or

b) Use another CAD program, they start at 0.00$ 

[pendean]

No.

For future reference the AutoCADLT forum is over here where you will not get non-LT advise typically unless you insist on it https://forums.autodesk.com/t5/autocad-lt/ct-p/2000

[Kent1Cooper]

In full-AutoCAD 2019, in the JOIN command, if you select multiple Arcs that form a circle, it notifies you of that and asks whether  you want to convert them to a Circle [entity].  If it's not  asking that [and if  JOIN in whatever version of LT you use works the same as in full Acad2019], then the selected Arcs don't form a true circle, whether because they don't share exactly the same center point and radius, or because their ends don't meet precisely, or maybe for some other reason(s).

[Kent1Cooper]

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@Anonymous wrote:

.... tried JOIN but it generates one arc, still not a circle

---

In that case, they must not quite meet at one end.  An Arc [that is, an AutoCAD Arc entity] cannot go around a full 360 degrees and be "closed" with both ends at the same place.

[cadffm]

@Kent1Cooper ?

Join command can create a circle from two arcs, when both (four) endpoints match 100% and

also wenn just one (two) endpoints match.

The gap can be up to 179° (with such a big gap you have to select the little arc as first).

Or did i unserstood your answer incorrect?

[Bob_Zurunkle]

OP did you try the following:

1. Eliminate all but one arc in the "circle"

2. Use the join command and pick the arc

3. Read the command line and pick the option cLose (or L for short)

[Kent1Cooper]

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@cadffm wrote:

....

Join command can create a circle from two arcs, when both (four) endpoints match 100% and

also wenn just one (two) endpoints match.

....

---

I confess I hadn't tried it with Arcs that don't  completely fill the circle, but yes, JOIN can complete it even when they don't [provided they have the same center and radius].  However, I was going from their description in Message 3 that they had "tried JOIN but it generates one arc, still not a circle,"  in which case something else is going on -- it may be only that they didn't notice JOIN's option to complete the Circle.