Welcome to the Onshape forum! Ask questions and join in the discussions about everything Onshape.
First time visiting? Here are some places to start:- Looking for a certain topic? Check out the categories filter or use Search (upper right).
- Need support? Ask a question to our Community Support category.
- Please submit support tickets for bugs but you can request improvements in the Product Feedback category.
- Be respectful, on topic and if you see a problem, Flag it.
If you would like to contact our Community Manager personally, feel free to send a private message or an email.
Drawing circle from midpoint cause "Sketch could not be solved."
françois_mentec
Member Posts: 5 ✭
in Drawings
As you can see in the video, as soon as I draw the circle from the line midpoint, the sketch become red and the message "Sketch could not be solved." appears.
Any idea what the cause might be? I really need my circle at this position.
Tagged:
0
Comments
Thanks for the video, but not sure. Please share the doc URL.
seems a constraint is conflicting. if you share doc as Neil suggested someone can help narrow down what the conflict is. putting a circle on a midpoint works for me.
The link:
https://cad.onshape.com/documents/16597ac1252cd1937a2601ae/w/46c3439ca8594ec4af0e74f3/e/4f5b8c83527f135b0600be4b?renderMode=0&uiState=6790a9d333ddbf61bdbc3cbc
The problematic sketch is in red (you nee to scroll down a bit).
I put a big arrow pointing to the circle causing the issue.
I have no idea, but problems like this can arise when sketches are too busy. Keep them simple - 10 entities or so. You should also make use of equal constraints on the circles so you don't have to keep adding dimensions. Also, since these are holes, a point would suffice and then use the hole feature afterward and maybe even a circular pattern. For what it is, this model is over complicated.
Looks like your design is a great candidate for one fourth of the work you've done. maybe 1/8 with the use of mirrors and a circular pattern. A couple suggestions. use equals contraint rather than inputing variable reference for every dimension. When there's opportunity to use mirror and symmetry and patterns its highly desirable to do so.It will help avoid over constraining and narrow focus to minimum number of entities to make it easier to troubleshoot
Your sketch could be as simple as this image or even simpler if you want to do the fillets on the solid model instead of in the sketch. the hole tool can be used to create a counter bore through both parts using the points as shown in this sketch. and the feature tree might look like the 2nd pic.
Thanks everyone for taking a look at my issue. I tried to apply your advices and redid my whole sketch using mirror and points, and used the hole tool (great tool, a bit intimidating at first but very powerful, I must have looked like a Neandertal extruding my holes ^^). Unfortunately I read MDesign latest comment after. Drawing on only a quarter is even better than what I did (I drawn on half and mirrored the rest). Fortunately what I did work, my sketch is simpler and the issue is gone.
I have one last question for MDesign, I see that you mirrored the holes, while I mirrored my sketch. Is your method better or is it just preference? I guess yours is less work since you have fewer points to select for drilling holes.
for simple designs it doesn’t make much difference other than the reason you mentioned. But when designs get complex it’s my understanding it can be preferred to do repetitive stuff outside the sketch when possible for performance reasons. I just try to make it a habit.
Learning about tools through experience doesn’t make you a Neanderthal … it makes you normal. Ha.