Dimensioning discontinuous lines in a drawing?

phil_go

Hi,

I'm fairly new to onshape and have trouble in modifying discontinuous lines that sometimes occur when creating a drawing from a part file. I attached a screenshot where the line of an edge radius is broken and I can't measure it.
Is there a way to delete and renew broken lines? Am I missing something else here?
Thanks in advance.

tim_hess427

@phil_go - is the drawing view exactly aligned with the cross-section of the that fillet? If the little knob thing is circular, can you create a cross-section view through the middle to make sure the view alignment is correct?

It's a little hard to tell what's going on, but sometimes with complex shapes, you can end up with curves in drawings that don't have a constant radius (like if you made an angled cut through a cylinder - your curves would be elliptical).

NeilCooke

Does the part have those edges in it? Can you make it public and share?

phil_go

Hi Neil, unfortunately I can't make my part public. I will share a screenshot where the structur is more visible, but I have found this problem to occur on other curved features as well. I'm just curious if there is a way to manually change the drawing, e.g. erase lines and reconnect to existing features?

Smith

phil_go said:

Hi Neil, unfortunately I can't make my part public. I will share a screenshot where the structur is more visible, but I have found this problem to occur on other curved features as well. I'm just curious if there is a way to manually change the drawing, e.g. erase lines and reconnect to existing features?

If you reconnect the lines so the ends a flush, you should be able to dimension individual curves.  To go back to a sketch manually, just look at the action list on the left hand side of your screen, and double click the sketch you would like to edit.  To make the end of the lines connect, you can use the coincident constraint (the default shortcut is "i" if I remember correctly).

Hope this helped,
Ethan

tim_hess427

@phil_go - is the drawing view exactly aligned with the cross-section of the that fillet? If the little knob thing is circular, can you create a cross-section view through the middle to make sure the view alignment is correct?

It's a little hard to tell what's going on, but sometimes with complex shapes, you can end up with curves in drawings that don't have a constant radius (like if you made an angled cut through a cylinder - your curves would be elliptical).

phil_go

ethan21smith said:

phil_go said:

Hi Neil, unfortunately I can't make my part public. I will share a screenshot where the structur is more visible, but I have found this problem to occur on other curved features as well. I'm just curious if there is a way to manually change the drawing, e.g. erase lines and reconnect to existing features?

If you reconnect the lines so the ends a flush, you should be able to dimension individual curves.  To go back to a sketch manually, just look at the action list on the left hand side of your screen, and double click the sketch you would like to edit.  To make the end of the lines connect, you can use the coincident constraint (the default shortcut is "i" if I remember correctly).

Hope this helped,
Ethan

Thats the sketch modus. I'm experiencing that issue when creating a part drawing.

tim_hess427 said:

@phil_go - is the drawing view exactly aligned with the cross-section of the that fillet? If the little knob thing is circular, can you create a cross-section view through the middle to make sure the view alignment is correct?

It's a little hard to tell what's going on, but sometimes with complex shapes, you can end up with curves in drawings that don't have a constant radius (like if you made an angled cut through a cylinder - your curves would be elliptical).

That must be it then, since I'm experiencing this with complex shapes as you said. Thus probably resulting in non constant radii.
Thank you.