How do I create a silicone mold with lettering on the object?

I am making a silicone mold that I will use to cast concrete. I have a positive item I will use to create the mold that has no lettering on it. I would like to create a mold that will imprint lettering on the casted object.

The object I’m casting is about 4 inches and the text will be relatively small, so I will need to be able to catch fine details in high resolution.

I was thinking the steps would be:

1. Create mold with the positive item
2. Use the mold and cast a positive item from a material that can be imprinted with letters after casting
3. Use the new positive that has had lettering imprinted in it to create a new silicone mold that has the lettering
4. Cast with concrete

If this is the best way to do it, what recommendations do you have for the intermediate casting material that I can imprint with lettering after casting?

If you have an alternative method for accomplishing this, please let me know, I am all ears.

Thank you for the help!

submitted by /u/RonTrouser
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