Thanks, okey so the problem is that my liquid is bio-compatible but not biodegradable, and so far I haven't found much else that has these properties (+possibility of hardening).
I think I will be able to change the viscosity to that of toothpaste so that it stays put until I apply the catalyst for it to harden (it needs two components to harden and in the tank is only one). But you are of course right that for initial experiments I could use some kind of Bioink, to test things out.
To whole print process should take place at room temperature or not higher than 35°C.

Best,
Soia