I am trying to build a 3D model for a ball chain sprocket. After much effort in trying to build one model of the whole thing, I have realized the model has to be broken down into three different assemblies modelled separately and eventually “merged” into a single larger model. This will work, right?
The first item I am making is the base. I have created a 2D cross section of the base and then used the Follow-me tool along with a path defined by a circle to extrude the cross section into a round object. The circle was not joined to the 2D cross section. All seemed to go well, but I got an error message indicating the extrusion did not start or end on the path and that unusual results may occur. After doing the extrusion, all looked well, in spite of the message. I assume this is a “just in case” message that can be ignored in this scenario.
Once I produced the extrusion of the base, I made the whole assembly into a group and then ran the solid inspector. I ran into a couple of errors. I got a “border hole” error indicating that a hole in the geometry shares at least one of its edges with a surface. The hole in question actually shares its edges with two surfaces. The fix states to “draw over the highlighted edges to fix the border holes”. Do I just use the pencil tool to trace the edge of each of the circles (they are 48 segments in the circle that defined the path)? Not sure what that would do because I do not see any breaks in the offending circle and the surfaces seem intact. Anything else that has to be done?
The second error occurs at an internal 90 degree angle where two surfaces meet. When you scroll in, the edges are highlighted in red and are separately by a tiny amount. They do not touch. Not sure why I would get this gap. The 2d cross section has the two lines meeting at their end points, so am not sure what is happening and how to correct it.
Once I get through this part of the model, I will create the other two assemblies, running the solid inspector separately on each of them, “merge” them, and then run the solid inspector one more time on the combined model. Will this approach work?
Any help appreciated, thanks.