This method is called converting. ( only casual) So their is organic polymer and normal polymer. (Organic is a substitute for normal polymer) now obviously you can get a lot from killing Kairukus or using a snail. But theirs a catch to using organic vs normal polymer, organic spoils and comes in stacks of 10, normal does not spoil and comes in stacks of 5000 (mobile). Fabricators can only hold 70 slots. Organic can not be used for advanced blueprints ( Mastercraft/ascendant) how the trick work is this. Get a pretty big that uses polymer. (Vault,air conditioner, or elevator things,) take out all normal polymer and keep organic. Make the structure and then destroy it the organic polymer comes back as normal polymer. Rinse and repeat as many times as you want. thank you for reading and respond me at @Blackout
If you are on crystal Isles, go to the bee cave and bring a giga and a weight carrier (skiff or wyv), kill all the bees with the giga and use the chainsaw on the hives, you will walk out with more than 600 organic poly per bee hive, up if worked for you 😃
If you need a good amount of poly, I would highly suggest going to the arctic and flying around the islands at that place. Make sure you can craft multiple clubs, as they give a lot of poly. (You can also use pelagornis or whatever you want to use.) I would not suggest using a snail, as they don’t give much poly (about 1-2 to be specific) and give more cementing paste. It’s a good method to kill a lot of penguins with clubs to get a lot poly, and the younger it is the more poly, so if you find a baby penguin it could give over 20 poly from that one corpse where an adult could only give about 10-15, and if your lucky then 20. Make sure to bring an otter or fur armour, as the arctic is cold.
TIPP: You can just craft a fridge with the organic Polymer and destroy it so that you get your stuff back. Every time you destroy a fridge you get normal Polymer back. That means you can transform organic Polymer to normal Polymer. I found it out yesterday by myself.