Thanks for your question. Yes, this is possible and you don't need to use the ACE editor. During STEP export options make sure to check the option: "Show Holes in Metal Layers".
Important: Typically most customers who are interested in converting between Gerber and STEP choose our product FAB 3000. The reason is FAB 3000 is dedicated to Gerber/Drill and has more Gerber related capabilities; while ACE converts between more formats.
Here's a quick tutorial showing me import a Gerber + Drill and them export with holes in the metal layers using FAB 3000:
Note: Just make sure that you have a Drill files loaded, and that you check the option "Show Holes in Metal Layers".
I'm currently evaluating the ACE Translator 3000.
I plan to use the software to translate Gerber files to STEP.
I successfully translated small Gerber files to STEP already.
I have a special requirement:
The STEP file of one layers Gerber shall include the drills, that means that pads shall have a hole where the drill is.
I found a subtract feature in the editor but had no luck subtracting the drill from the metal layer.
Is it possible to generate STEP output with drilled holes in metal?