The best tools you can make in Icarus are the Miasmic Tools or you can buy the workshop alternatives if you have red exotics. These tools can be made on the Elysium and Prometheus Map. Miasmic can be found by killing creatures in the swamp regions.
The crafting process includes refining Crystallized Miasma into Distilled Miasmic Coating using a Chemistry Bench.
Miasmic Tools Key Benefits
Miasmic Mining Pick – Mining with Miasmic tools produces Noxious Crust which must not be carried with you due to poisoning. These are best left in your animals cart. For every ore you obtain you will obtain 1 Noxious Crust which then gives you 5 of the same mined ore types including exotics.
Workshop Purchasable Alternative (Requires Red Stabilized Exotics): Inaris “Night” Pickaxe.
Equipment needed to Process: Biofuel Bio-Cleaner or Organic Residue Cleaner.
Miasmic Axe: Generates Infected Bark, which can be refined into large amounts of Epoxy, solving late-game epoxy shortages.
Workshop Purchasable Alternative (Requires Red Stabilized Exotics): Inaris “Sali” AXE.
The Miasmic Knife: Offers up to 175% yield from skinning, 15% chance to cause Miasma on hit with attacks and 10% Acidic Glands per skinned resource.
Workshop Purchasable Alternative (Requires Red Stabilized Exotics): Inaris “Shade” Knife
(125% Yield.
The Miasmic Sickle: Produces “Thorned” plants that have a +50% longer spoil time, aiding in food preservation.
Workshop Purchasable Alternative (Requires Red Stabilized Exotics): Inaris “Thorn” Sickle.