I guess its save a copy of the file and union and fillet the new version.
Too close to the finishing line, and entering week 5 of what I had estimated as a 1 week build. far more complex than envisaged, so no room to go dabbling yet again in V7 and overcoming its issues, and is there a solution to ribbon twist lines, apparently not.
Stick to common sense and not things that might not work.
Extract and delete the fillet surfaces. Untrim the adjacent surfaces and then retrim where they intersect. Check object is closed and apply new fillet. Or, treat filleting as a finishing touch. Don’t fillet until all your geometry is complete. Then you can save everything in one go in its pre-filleted state so any surfaces that need refilletting can be reimported.
(3D modeling “threads”, ‘inclined plane’ around a cylinder) In the context of physical science and mechanical advantage.
When discussing inclined planes in the context of screw threads on a cylindrical object, such as a bolt or nut, the connection lies in how the inclined plane concept relates to the mechanics of these threaded structures.
Threaded Inclined Plane: Screw threads on a cylinder can be thought of as a continuous helical inclined plane. Imagine unwrapping the threads from the cylindrical surface; you would have a long, spiraling ramp, like an inclined plane.
Mechanical Advantage: Just like a traditional inclined plane allows you to lift a load with less force by exerting it over a longer distance, screw threads provide a mechanical advantage. By turning a bolt (which has threads), you can move it up or down (or in or out) more easily than if you were lifting the load directly. This is why screws are used to secure things or hold them together.
Knowledge: To effectively use screws, bolts, or nuts, it’s important to have knowledge of the thread type (e.g., metric or imperial), pitch (distance between threads), and thread profile (e.g., V-thread, square thread) as these factors affect how the mechanical advantage works and how securely the threaded components will hold together. Understanding these aspects is crucial in engineering and construction.
In summary, screw threads on a cylindrical object can be seen as a form of inclined plane, and understanding the mechanics and properties of these threads is essential for various applications in mechanical engineering and construction.
Hence, as per my point earlier is, as it was less common in the past (say 15 or so yrs ago), for 3D-modelers to bother adding ‘threads’ to their models.
But over time as competition grows and common sense grows, more and more 3D-modelers learn how to dedicate the time and ‘tuition’ necessary to achieve more and more advanced geometric feats by learning from their said dedication of time and energy to things that, at first, ‘might seemingly not work.’
In conclusion, if you want to setup 3D-models with the capabilities of things like:
All in an automated parametric fashion; well yes, to reiterate, those things can be done. But it’s not very intuitive with Grasshopper especially with R5 versus R7. So, it might be better suited for programs like Inventor, or SW, CATIA etc.
At least until enough Eto frameworks are born to compete with the obvious best suited solution on this matter, being parametric solid modeling programs.