I'm not sure if this is a glitch or what....but everywhere I have checked, has informed me that 2 iron ores and a stone sword mold combo in the genetech lab would make an unadorned steel sword. This has not been working for me. If this is just some misinformation, I apologize in advance.
Other people were having trouble with that combination awhile back. Unfortunately I can't find the thread, and I'm not sure if they ever did figure out a solution other than to keep trying because it worked for some people and not others :x Sorry I can't be more help, but I hope you get it figured out.