Here is an tutorial on how to input 2D Ducting Input over a PDF drawing.
By using a PDF underlay (faded or screened) of our floor plan, you can draw your duct runs over the top. This is a 2 part series (part 2 coming soon) – subscribe to be notified – lots more to come.

We are using AViCAD – available at cadavenue.com – its a AutoCAD alternative at a much lower cost.

See also 50+ CAD commands you need to know mentioned in video: https://youtu.be/bCIykVlwtr4