pretty sure you can just use wood or whatever for the lettering, sure it might be kinda shit and tend to break but it should work. having to make new letter stamps every now and then is better than painstakingly writing every letter for hand.
The main problem with that is that you can't make the types very small with wood, and the singlemost expensive ingredient in this whole printing press concept is the paper.
So you would end up having books with very little text on each page, and especially in a slave economy, it would just be much cheaper to make handwritten copies, since you could cram a lot more words on each page.
And again, this is not adressing the issue of even having the skill to make paper in the first place.
Not to mention inventing an alphabet depending on where and when you go to. Or you could go with ConstantScript if you feel like being a gigantic troll.
Abugida might be workable if you reform it so that vowel markers can only appear above or below the modified consonant.
In Sid Meier's Civilization sure, but real history is a lot more complex than that. There were people who came to that conclusion since ancient times without it leading to a scientific and industrial revolution, because there were a lot more factors at play with those than just simply the idea of it.
The actual reason science took off is that there was a plague leading to a worker shortage leading to a wealth boom, while a lot of rich people had access to coffee and nothing to do.
While I, too, am a big fan of the Coffee hypothesis, it should be noted that lots of civilizations had access to caffeine and other stimulants, including the Arabs, Chinese and Incas and probably the Roman's, Greeks and Persians too.
And there were a lot of plagues, but most of them happened long before the scientific revolution.
Free time and the wealth to have that time is what I also think the catalyst is. Same with arts. You can't do experiments or spend time on art if your entire life is consumed by labor.
speaking of health, wouldn't you die to some disease you are not immune to? or even more likely you would cause a plague that their bodies don't lnow how to fight off, like imagine bringing back some covid variant with you.
I mean, us bringing back something to kill them seems more likely, despite our comparatively weak immune system’s. Be it COVID-19 or an STD. Hell, even our metal/plastic ridden bodies would be a potential issue for their environment if we died.