Open loop, doctor cannot close it, all conincident constraints set

[Anonymous]

Hey,

problem I keep having, the only solution is to draw it from scratch completely over, every time I get this.

A figure I drew, mostly with arcs... is almost never a closed loop once it's more than 2 arcs connecting.

sketch doctor can close the loop maybe 10% of the time...

wondering if anyone can tell what's wrong?

The boomerang shape in the middle is what I'm trying to extrude

(I also went by and conincident constrained everything, which also fixes it sometimes (If an Arc snapped to something NEAR the point I intended for example)

[blair · Accepted solution]

You are on a older version, but just create one arm of the boomberange using the center circle and the upper arm, then pattern your single arm shape 3X using the center circle as your pattern center.

You are doing far too much work in the sketch enviroment

[Anonymous]

Oh.... huh 😞   I never patterned stuff AFTER I've extruded it

Thanks guy!

[Inv_kaos]

The problem comes from your sketch pattern, it prevents the ends being joined even if they are coincident. Either pattern just the arcs at the end of the arm and then join with a manual arc or even better to do it as a feature pattern as suggested above. You also have not constrained the sketch to the origin or added sufficient sketch constraints - this also will make it easier to work with your model and know what is going wrong.