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Fill (area) between two sketches
Hi, I'm new to working in onshape. I need to fill in the space between two sketches, sketch 15 and 16. Can anyone help, please?
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Comments
1. your surfaces can only be as good as the curves used to make them. Your profile sketch has some issues. If you want your surface to be smooth, the curves have to be tangent to each other. Yours comes to a point at the ends (see below).
To make smooth curves (and surfaces), shoot for as few spline points as possible. Here's mine. Notice that it's just one spline for half of the shape and the orange handles are vertically constrained so when I mirror the spline, it will be smooth.
2. The second question to ask here is what tool to use to get the surface you want. Usually I'd reach for Loft or Fill. Generally, either one is probably ok for what you need and the rest of this reply might be overkill, but here I go anyway. In this case Fill gives a better result. Without getting into too much theory, the way Fill creates this surface will be more stable for downstream operations (like Shell, Thicken, or Offset) because the underlying surface is more rectangular. See the example screenshot below, and check out this link to a copy of your workspace. The red curves on the left are from Loft, which pinches at the ends. The green ones are from Fill, which is more regular. That's what you want.