I hope my model is clear enough to follow the process. The screen cast demonstrations with expert instruction are perfect for the beginner to study in detail, or for the expert to skim though and quickly see how things are done in EazyDraw. The incoming tangencies on the spirals mean you need three arcs to join it all up (OK, six arcs - three for each side, and I don't think my dimensions are quite right). EazyDraw's library of over 40 video tutorials is without a doubt the easiest way to quickly gain a good understanding of Vector graphic drawing techniques. Since the spirals are splines, it is not simply two tangent arcs. In this 2d sketch, I added the lead-in and lead-out legs and that bit in the middle - which is more complex than it looks. I projected the axis and the inside diameter circle (using "include geometry" and then added coincident constraints until the spirals were fully constrained.Īfter creating the spirals, I made a 2d sketch (Sketch4) and projected the spirals into it. One thing to note with spirals (and helix): They (usually) appear unconstrained after creating them. I linked all the spiral parameters to each other, so changing the "Spiral1" will update "Spiral2". You can use the 3d Sketch > Helix to create a 2d spiral - the inputs require a vertical axis and the inside diameter, neither of which are in your model but are easy to create.įor the sake of keeping it simple, I created each spiral in its own 3d Sketch. You may move or resize the spiral by clicking inside the spiral or on one of the handles. it created a shape similar to my straight-line walking ability on new-year.Īttached is my attempt (using Inventor 2022 - hope that's OK). The new spiral becomes the only selected object after creation. Kudos for the effort! Spiralling back with the slot tool though.
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