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How to make a small funnel with sheet metal.
Wrap the foil around the model to create the foil funnel.
The first picture illustrates the outcome which by the way was done using loft command and the second illustrates part of the attempt to construct the funnel using the sheet metal commands.
Remove the tape from the inside of the aluminum foil funnel to release it from the cardboard model.
You may want to line the entire edge with tape to ensure it fully adheres.
Thanks for the help.
Mark an 8 inch circle on a piece of sheet metal.
Draw a straight line from the outer edge of the circle to the inner edge and cut along it.
Cut around the circle with tin snips and smooth the cut edges with sandpaper to remove all the burrs and sharp points.