just get organic polymer, they act like polymers so just go top left of map where there is an island full of penguins.

and use a Chainsaw

For the poor penguins: Wooden clubs (higher % damage better), There is also the rideable bird you can tame to harvest them.

But you can also tame some snails and set up a farm with about 12-40 snails and some beehives (need to bake cakes for the snails), the snails make Achatina Paste and Organic Polymer. (If you automate the snail harvest with an S+ Item Aggregator, then you cna do with far less snails than if manually harvesting them, and you also only need 2 sheep if you automate wool rather than like 50).