Clarification on crafting armor/weapons to be magical?

[k9burn]

I would just like a clarification on the procedure to make a magical armor or magical weapon using the craft skill (not the Craft Magic Arms and Armor feat).

Which is the correct procedure?

• Put the mold, ingots and special items (gems, essences, etc.) in the workbench all at once and craft the magic item in one crafting attempt.
  or
• Put the mold and ingots in the workbench, then craft the non-magical armor. After that, put the armor back onto the workbench and add the special items and make a second crafting attempt to make the armor magical.

Thanks