I also want to add that they have 2 versions of OOMOO, 25 and 30.
25 is what I use. It is done in 75 minutes.
30 has a 6 hour demold time.
It is also a good idea to use a mold release agent to get a better mold and to prolong mold life. I use their Ease Release 200. It comes in a spray can and it easy to use. Just make sure you have plenty of ventilation or spray it outside.
I spray the object I am molding and take a soft brush (a makeup brush works great, snag one from your wife or get one at the store) and lightly brush it to make sure all surfaces are covered. Then a let it set for a few minutes and then give it another quick spray.
Also, everytime I use the finished mold I spray it with the release agent. Again, it gives a better cast, helps get the part out easier and makes life easier for the mold.
If you guys have any questions about this stuff feel free to message me.