Hey guys, are you tired of struggling to make all grid lines show in 3D view in Autodesk Revit? Well, I've got you covered with some simple steps to help you out. Let's dive in!

Step 1: Open the 3D view in Autodesk Revit.

Step 2: Go to the 'View' tab on the ribbon and click on the 'Graphic Display Options' button.

Step 3: In the Graphic Display Options dialog box, find the 'Show Grids' option and make sure it is checked.

Step 4: If you want to show specific grid lines, you can also use the 'Filter' tab within the Graphic Display Options dialog box to select the specific grid lines you want to display.

Step 5: Once you have made your selections, click 'OK' to apply the changes and make all grid lines show in the 3D view.

And that's it! With these simple steps, you can easily make all grid lines show in 3D view in Autodesk Revit. No more struggling to figure it out on your own. I hope this helps you with your 3D modeling projects. Happy designing!