curve

Is there an accepted way to compare two surface edges to see if they are within tolerance for a boolean add operation? I'm trying to create an approximate offset curve along a surface - within tolerance - so it can be used for trimming and other operations. In this image the input curve is an isoparam (degree-3) and the…

Hi there, I'm trying to make an F-35, but have some issues with the front portion. I've created a loft, and added guidelines using 3D fit splines which go from vertex to vertex. However, when I add this as a guideline to the loft, it doesn't touch the curve at all! Additionally, when I pierce the curve, and connect a…

Hi everyone, I’m currently modeling my NovoPen 6 insulin pen in Onshape and could use some help with a specific feature. I’ve projected a 2D sketch onto the side of a cylindrical surface, and now I’d like to turn that shape into a smooth, curved bump something like a domed or organically contoured protrusion, not just a…

Hello, I am trying to creat a cam cut in a spherical surface. It works fine using the helix tool and sweep the shape. However I need the curve to have an variable angle where it increases exponential. I found a workaround to create a sketch with the curve as I want it and wrap that over the surface and cut it out. than use…

Allows you to move or copy a 3D curve to a new location by defining the new endpoints. New curve retains the essential "Character" of the original curve but is stretched parallel to new Chord to reach target points. (Chord is a line between curve endpoints) User can also scale new curve normal to new Chord, and rotate new…

Is there a feature that allows you to place a point on a curve a specified percentage (or distance) from either end?

I'm playing around with a new FS for generating reference points from various inputs. One the potential inputs is 3 surfaces or planes. The first step to getting the point intersection between 3 bodies is to generate a robust curve intersection between 2 bodies. This seems to work well enough for simple cases where 2…

Unless I'm missing something, it seems it's currently not possible with FeatureScript to extract the control points, knots, weights, etc. of an existing edge or curve. It really seems like a fundamental problem. Is this on the roadmap? I do see opSplineThroughEdges in the documentation, but it sounds like it's…

I often need to create an axis on the intersection of two planes.To do so, is it necessary to create a sketch and a line in the sketch, or is it possible to just select the planes and say "create construction line" and you get a kind of "3D rectilinear curve"? And same question for an intersection curve. Is it possible to…

I'm trying to measure the boundary edge of an evaluated face. When using evFaceTangentPlane, if the face is not square, the evaluation will project where the face should be. I can place a plane on the invisible edge shown below with evFaceTangentPlane. However, I'm not sure how to get the length of the invisible edge. If I…

I am trying to make a ramp above a semicircle that curves along its edge. I have spent the last several hours trying to figure this out so any help would be much appreciated! thanks!