The Workbench is the backbone of everything you can craft. It is crafted at a portal using 1 dirt.
List of items a Workbench can craft at level 1:
Craft bench (1 dirt, 1 stick)
Tool Bench (1 dirt, 1 flint)
Level 2: (Costs 5 stone to level up)
Tailor's Bench (1 stone, 5 flax )
Kiln (1 stone, 3 clay, 10 sticks)
Furnace (1 stone, 10 charcoal )
Mixing Bench (1 stone, 1 tin bucket, 5 oil )
Dye Bench (1 stone, 1 bucket of water, 1 linen )
Armor Bench (1 stone, 5 tin ingots)
Train Yard (1 stone, 5 steel ingots)
Metalwork Bench (5 bronze ingots, 2 coal)
Portal (1 stone, 100 time crystals )
Level 3: (Costs 5 steel ingots to level up)
Steam Generator (1 steel block, 1 steam engine, 1 electric motor)
Flywheel (1 steel block, 1 copper block, 1 electric motor, 10 copper wire)
Electric Stove (1 steel block, 1 iron pot, 10 copper wire)
Electric Kiln (1 steel block, 1 red brick, 10 copper wire)
Electric Furnace (1 steel block, 1 iron ingot, 10 copper wire)
Electric Metalwork Bench (1 steel block, 1 steel ingot, 10 copper wire)
Solar Panel (1 steel block, 3 silicon wafers, 10 copper wire)