Editing object created from bezier curve I used a bezier curve to create an architectural moulding profile. Extruded the shape and used solidfy and made exactly what was intended. I would like to find a way to cut the shape with a knife at a 45 degree angle. Suggestions?

Thank you!!
Use the knife tool with K and press C to constrain your cut at 45 degree (or straight or vertically) If you need to cut both side of your mesh hit Z. when you are done press enter.