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Inventor will develop flat patterns from components that has a 0 degree internal corner, but the external corner must have a radius. Inventor won't develop parts that have 90 degree external corners. One tip to create perpendicular cuts is to use the split face and thicken method. When building Sheet metal components, make sure that your cuts are perpendicular to your faces using the options available in the cut tool's dialog box. To make sure that your models edges are perpendicular to the face, use the Thicken tool to build your model from surfaces, as outlined above. Inventor doesn't like developing flat patterns of parts that have wobbly edges! To set this manually вЂ“ measure your parts thickness, and then override the thickness in the Active Sheet Metal Style to match your model. Inventor will have a stab at guessing the Thickness of an imported component. Note: The Thickness of your model must be the same as the Thickness in the current Sheet Metal Style that you are using. You can thicken the surface in the Multibody part and derive the body into a sheet metal part, or derive the surface into a Sheet Metal part and then Thicken in the Sheet Metal part file. My top tip here is to model using surfaces and then use the thicken command to model a solid with a constant thickness. This issue often arises when you build a multibody component and then split it up and derive the bodies into Sheet Metal parts. To develop a flat pattern, Autodesk Inventor must start with a model that has a consistent thickness вЂ“ just like a sheet of metal in real life. If you are working with imported files, you could use Autodesk Inventors direct modelling tools to fix up the problem component. If you are using the Sheet Metal environment, you can adjust your flanges to suit. The Autodesk Inventor Sheet Metal environment has a great tool for detecting overlapping folds.ДЄlthough you can develop a flat pattern that has overlapping folds, Inventor will complain about it, and won't stop complaining until you fix it! Inventor's 'Rip' tool can be used to add a gap to parts that don't have one. Make sure you leave a gap to allow unfolding. Your model cannot be completely continuous. If you don't, please consider the tips below. If you have the choice, use the Sheet metal tools to model your Sheet Metal parts. The tools in the Sheet metal Environment allow you to model some forms that will develop in the Sheet Metal environment that Inventor won't develop if you try to flatten the same shape as imported or derived geometry.Д¬heck out the 'twisted' component in the image included that was built with the contour roll tool. Now that we have multi-bodies support in the sheet metal environment (Inventor 2016), this shouldn't be so much of an issue! In the past we have received lots of support calls from people using derived or multibody workflows to create their Sheet Metal assemblies from multibody parts. We rarely receive support calls from people who have created models in Inventor's Sheet Metal environment that won't develop. #1 Model with Autodesk Inventor's sheet metal environment.

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In this blog post I'll give you my top seven tips for making sure that your Sheet metal parts will flat pattern every time :)Д¬lick this link to download our Autodesk Inventor Sheet Metal training agenda. Inventor has its own modelling environment for creating sheet metal parts and Inventor will also develop flat patterns for imported components from other CAD systems. Inventor will not flat pattern 'pressed' shapes - for example a car door. Think of the shapes you can make from a flat sheet of metal and a brake press.

The Inventor sheet metal environment is designed to flat pattern developable geometry. Who needs it? No-one wants to create an Autodesk Inventor sheet metal part that won't unfold! Autodesk Inventor Sheet Metal, Flat pattern success вЂ“ Every time! Seven tips to guarantee that Your Autodesk Inventor Sheet Metal models will flat pattern without errors.