![]() Aįrequent change between Netfabb and FreeCAD is necessary until all constraints are defined for the Swann Rack / Holocreators Define the dimension between the edge of the flange and the center. Swann Rack / Holocreators Click on “fix a length of a line or the distance between a line and a vertex “. Swann Rack / Holocreators Design on the cross-section of the flange. Swann Rack / Holocreators Select the XY layer. Swann Rack / Holocreators Click on “create new sketch” to enter the ”sketcher” workbench. Swann Rack / Holocreators If CTRL+D does not work, you can set the “Transparency” directly in the menu’s lower-left handĬorner. Swann Rack / Holocreators The key combination CTRL+D opens a window in which we can set the “Transparency”. ![]() Step 3: Change the Transparency of the 3D Scan in FreeCAD and Create a ProfileĪdjust the 3D scan to make it semi-transparent to allow for designing directly on it. This will simplify the CAD modeling process. Now optimally aligned in the FreeCAD coordinate system. Swann Rack / Holocreators Finally, switch to a top view and move the 3D Scan until it is in the center of the circle. Swann Rack / Holocreators Change the view and repeat the process for the Y-axis. Swann Rack / Holocreators In the end, it should look like this. Swann Rack / Holocreators Switch to a side view and rotate the 3D Scan incrementally until it is aligned perpendicular to the Xaxis. Swann Rack / Holocreators Activate the checkbox “Apply incremental changes to object placement”. Swann Rack / Holocreators Click on the three dots next to the “Placement” button. Swann Rack / Holocreators In the lower-left hand corner, click on the button “Data”. This is done in the “Sketcher” workbench. Step 2: Correct Alignment (Placement) of the 3D Scan in FreeCADĪlign the 3D Scan optimally along the X, Y and Z-axes. The reference circle sketch is now ready. So 76mm/2 FreeCAD will automatically calculate the radius ofģ8mm. Swann Rack / Holocreators Enter the radius of the diameter. Swann Rack / Holocreators Click on the button “Fix the radius of a circle or an arc”. Click on the button “Create a circle in the sketch”. Swann Rack / Holocreators Import the file “professional-3d-scan-with-artec-space-spider-tankgeber-part.stl” into FreeCAD andĪctivate the workbench “Sketcher”. Swann Rack / Holocreators The outer diameter of the flange is 75.97mm-round up to 76mm. Netfabb will automatically output the outer diameter. Swann Rack / Holocreators Select the outer edge of the flange. The button “3 points on circle” must be activated. ![]() ![]() Swann Rack / Holocreators Click on “Measure Radius”. Swann Rack / Holocreators Click on the button “New Measuring”. We have prepared the 3D Scan for download here. Swann Rack / Holocreators The original 3D scan is imported,”professional-3d-scan-with-artec-space-spider-tankgeber-part.stl”, In this first step, a circle is defined using FreeCAD, which will help us align the 3D scan correctly. Step 1: Measure the 3D Scan in Netfabb and create a reference sketch in FreeCAD We have prepared the CAD file for download here. Swann Rack / Holocreators After reverse engineering using parametric modeling in FreeCAD, the finished solid model (STEPįormat) looks like this. Swann Rack / Holocreators This is the original 3D Scan (STL format) of the tank sensor part. Then, a reverseengineered 3D scan was created using parametric modeling in FreeCAD. First, aģD scan was made using the professional 3D scanner, Artec Space Spider. The broken part, which serves as an example project, is a fuel sensor from a 50-year-old car. ![]()
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