topic AutoCAD LT generate Circle from arcs in AutoCAD Forum

AutoCAD LT generate Circle from arcs

Anonymous — Wed, 06 Feb 2019 08:44:33 GMT

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?

Re: AutoCAD LT generate Circle from arcs

jayhar — Wed, 06 Feb 2019 08:47:35 GMT

Hi,

did you try JOINT command ????

Thanks

Jayhar.M.J

Re: AutoCAD LT generate Circle from arcs

Anonymous — Wed, 06 Feb 2019 08:51:03 GMT

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

Re: AutoCAD LT generate Circle from arcs

jayhar — Wed, 06 Feb 2019 08:52:55 GMT

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

Re: AutoCAD LT generate Circle from arcs

cadffm — Wed, 06 Feb 2019 09:25:30 GMT

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>

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

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

Re: AutoCAD LT generate Circle from arcs

pendean — Wed, 06 Feb 2019 13:48:23 GMT

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

Re: AutoCAD LT generate Circle from arcs

Kent1Cooper — Wed, 06 Feb 2019 14:44:25 GMT

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).

Re: AutoCAD LT generate Circle from arcs

Kent1Cooper — Wed, 06 Feb 2019 14:49:12 GMT

@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.

Re: AutoCAD LT generate Circle from arcs

cadffm — Wed, 06 Feb 2019 14:57:44 GMT

@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?

Re: AutoCAD LT generate Circle from arcs

Bob_Zurunkle — Wed, 06 Feb 2019 16:31:06 GMT

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)

Re: AutoCAD LT generate Circle from arcs

Kent1Cooper — Wed, 06 Feb 2019 17:26:38 GMT

@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.