You gotta put the Sap into the bug's inventory, and it will convert it over time. Also it looks yummy asf

To craft resin, simply place sap in a tamed Rhyniognatha’s inventory. It will take about five seconds to convert each sap into resin.

If you want tonnes of sap redwood trees will do

Used axe, biever or dire bear

Incase anyone doesn’t know, the resin is converted from sap and it is used as ammo for the rhynio!

The giant Joshua trees on rag provide a decent amount of sap if you hit them with a chainsaw

Resin for printers. You can print more rhyniogonthias.

Crafted in a rhyniognatha ana is used as ammo for a rhyniognatha

Put sap in its inventory and it will automatically craft one every 5 seconds.

Giant yellow trees in rockwells biome that have holes of a yellow sappy looking substance

Use the melee attack for them for 50-60 sap (melee attack with ascendant fabricated pistol)

Or use a club, idk

~ CPG