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Coincident restraint
price_cobb
Member Posts: 40 ✭
Hey folks, why is this drawing not fully defined?
This was drawn by a friend new to OnShape and I said "I can help" and I'm failing.
I can see the lines are blue but that aside it looks good enough to extrude (as a solid) yet no such luck and I'll be doggone if I can see why this is not fully defined?
In my efforts to make it good, I've tried to add Coincident points but apparently without success so I'm still not sure what is up. This is odd to me since I've extruded many things but have never been stuck like this. It has been my experience that I can extrude this as one part.
I can say that after all the constraint adding, I've noticed that there are at times two different colors when touching some of the Coincident markers (little T square thingies) Often they show either two lime green lines from the point, or one brown and one lime green. What do these colors mean (while I'm inquiring about coincident)
I can quickly sort of replicate his drawing and although it too may be blue (still not sure even why THAT is either but lets move on) yet in my case, OnShape allows me to extrude it. While I type this I may go and add a shape just below the one in question for giggles but I am stumped on his drawing.
Anyway, the file is shared with Staff and the name is
PC Copy 18620 36 Holder
we are looking at tab Cell box 1
Happy to share the file with everyone if it helps.
Your thoughts are so welcome… TYVM
Answers
Is the sketch anchored? Is there any point in the sketch that is in anyway constrained to the origin by a constraint, by dimension(s) or to another element in another area of the sketch that is constrained? If you can move the entire sketch around on the sketch plane, it needs to be somehow anchored in it's 2D space. - Scotty
found your file. you don't have hardly anything constrained in that sketch. but most importantly it doesn't know where it needs to be located with respect to the origin or other planes.
Also coincident can be misleading as you can see in this animation. it looks like corners are coincident but really an end point is coincident with the line and not the endpoint.