The combination of NURBS & T-Splines maintains G2 continuity (aka C2 curvature).It makes NURBS modeling easier by picking single or multiple faces, control points/vertices or edges and by push/pull or specifying a numeric vaule, modifying the surface. Purchased by Autodesk in 2012, incorporated in Fusion 360 and popular amongstВ Rhino users, T-Splines is a solid-body surfacing tool which makes surfacing dramatically easier whileВ maintaining G2 Continuity. If you use CAD for surfacing, need to design complex geometry or create designs where aestheticsВ make a difference, then T-Splines will make you question your currentВ CAD toolВ and how much time youвЂ™ve wasted over the years. ThisВ Project Chronicle Video covers the basics:ДЇreeform Tools (N.U.R.B.S with T-Splines) Another nice feature when entering values is that you can use run equations,В select pre-defined parameters such as diameter or re-useВ commonly used values too.Дeleting the Direct Edit in the History Tree will restore the geometry back to the original state. Double clicking on either will allow you to re-edit.

If a direct edit is made, an icon will show next to the edit in the modelling environment and also in the history tree. While making a direct edit, Inventor will preview the change so you can see what the desired affect is. While editing using the size tool (say the thickness of a body) is limited to an offset, changing the size of holes can be done by offset, diameter and radius.

You can push and pull geometry to the desired size or enter in a value. Options includeВ changing the triad, orientating the selection and snapping parallel to other geometry. The Direct Edit tool allows you to select faces or solid bodies and make direct edits to them. With the new Direct Edit tool you can parametrically move, size and rotate imported solids or native Inventor files. What if you could edit partsВ without affecting the history? What if you wanted to explore changes without committing to them or make a quick change and not have to go through re-editing features or reading error lists and fixing them? Direct EditingВ methodology also has itвЂ™s disadvantages too. ItВ can beВ hard to edit complex partsВ with Parametric Modellers, especially when it is someone elseвЂ™s creation or been a while since the file was used, which is why many CAD users like Direct Editing, youвЂ™re not constrained by a history of features. The ongoing debate in CAD modellers has been whatвЂ™s better Parametric or Direct Editing? What about having both?Д¬hanging features in parts with complex histories in Parametric modellers can be painful and a slow process because changes can affect other features causing errors, analysing those errors and rework. ThereвЂ™s 2 big additions and many enhancements, so in this article IвЂ™m going to concentrate on Parametric Direct Editing, Freeform and Large Assembly Express Mode. Inventor 2015 is one of the best releases yet, unlike any other CAD tool on the market today because it not only delivers enhancements to existing tools and UI but adds new technology that makes this product so unique. Hybrid Parametric Direct Editing, N.U.R.B.S with T-Splines and moreвЂ¦

Autodesk inventor 2015 for designers