All Tinker's Construct tools can be modified to allow for certain upgrades. They are listed below (and in the Materials and You book you receive in-game). Applying any of the below modifiers takes up one modifier slot, for which most tools have a default of three maximum.
Modifier Types Additional Modifiers, Level 1
Book Text
Working the tool with a block of gold and a diamond makes the tool more malleable, allowing for more modification.
Resource
1 Diamond , 1 Block of Gold
Effects
Adds an additional modifier slot to the tool
Single use
Additional Modifiers, Level 2
Book Text
Attaching a solid gold apple and encrusting the tool with a block of diamond warps the tool in places you did not notice before
Resource
1 Enchanted Golden Apple , 1 Block of Diamond
Effects
Adds an additional modifier slot to the tool
Single use
Additional Modifiers, Level 3
Book Text
Working the tool with a nether star gives it the ability to attach parts they would not otherwise stay.
Resource
1 Nether Star
Effects
Adds an additional modifier slot to the tool
Single use
Silktouch
Book Text
Adding a larg glob of gold and a bunch of string seems to give the tool silky-smooth properties.
Resource
1 Silky Jewel
Effects
Allows blocks to be harvested directly
Not compatible with Luck or Auto-Smelt
Single use
Luck
Book Text
Encrusting lapis on tools is a gift to the gods of luck. They will bless your tool with great fortune and loot.
Resource
Lapis Lazuli
Effects
Adds fortune or looting
Tool use has a chance to increase the luck
Adding more lapis only uses one modifier
Not compatible with Silky
Fiery
Book Text
Adding blaze powder to a tool gives it a fiery tinge. The weapon's edges look like embers. Sadly not bright enough to be a light source.
Resource
Blaze Powder
Effects
Sets enemies on fire
Deals additional fire damage on hit
Multiple levels
Sharpness
Book Text
You can use Quartz to sharpen and hone the edge of weapons. The more Quartz is used the better you can sharpen the blade. Works with blunt items as well.
Resource
Nether Quartz
Effects
Increases attack damage
Different weapons scale differently
Multiple levels
Beheading
Book Text
Working an ender pearl and some obsidian on a weapon has the curious effect of separating the target's head from its body. Just a little off the top?
Resource
1 Ender Pearl , 1 Obsidian
Effects
Enemies drop their heads
Adding more Obsidian and Ender Pearls increases the chance of decapitation
Multiple levels
Diamond
Book Text
Adding a diamond to the edge of a tool makes it more resilient and increases what the tool can mine. Also makes a fetching fashion statement.
Resource
1 Diamond
Effects
Extra durability
Minor stat increase
Mining level increased to Obsidian
Single use
Fabulous!
Reinforced
Book Text
Adding an obsidian plate to the tool seems to help with its durability, making it stronger.
Resource
1 Obsidian Plate
Effects
Adds a chance to not consume durability
Stacks with previous levels of Reinforced
Multiple levels
Fortify
Book Text
Harder, better, faster, stronger! Applies the same mining level of the material used to the tool.
Resource
?
Effects
Increases Mining level
Mining Level depends on material used
Can also downgrade level
Requires no modifier
Shulking
Book Text
Empower your tool with the ability of a Shulker. Hit enemies to render them powerless in midair.
Resource
Popped Chorus Fruit
Effects
Each point increases floating duration
Causes enemies to float away
Hilarious
Single level
Haste
Book Text
Adding redstone to a tool seems to increase its speed. Redstone. Crazy stuff, amiright?
Resource
Redstone
Effects
Each redstone dust increases mining speed by a small amount
Increases attack speed
Multiple levels
Necrotic
Book Text
Placing the bone of a Wither Skeleton on a tool gives it nefarious life-stealing powers.
Resource
Necrotic Bone
Effects
Heal when dealing damage
Add more bones to increase the heal
Multiple levels
Harvest Width
Book Text
Have you ever wished your tool could affect a wider area? Now it can!
Resource
1 Expander (Horizontal)
Effects
Increases the width of the area affected
Only affects blocks
Does not work for weapons
Can be combined with Height++
Emerald
Book Text
Affixing an emerald to a tool's weakest point makes it especially resilient and fabulous. Villagers may also covet your tool, be wary.
Resource
1 Emerald
Effects
50% durability increase
Mining level increased to Iron
Single use
Outrageous!
Smite
Book Text
The raw power of consecrated soil empowers your weapon, smiting enemies from on high.
Resource
Consecrated Soil
Effects
Deals massive damage to undead enemies
Multiple levels
Harvest Height
Book Text
Have you ever wished your tool could affect a higher area? Now it can!
Resource
1 Expander (Vertical)
Effects
Increases the height of the area affected
Only affects blocks
Does not work for weapons
Can be combined with Width++
Soulbound
Book Text
A perfect match. You love your tool. Not even death can part you from it.
Resource
1 Nether Star
Effects
Tool remains in your inventory after death
Single use
Does NOT require a modifier
Mending Moss
Book Text
Some moss has grown on the worn out edges of your tool. Enchanting it with some XP causes it to fuse with the tool, restoring it gradually.
Resource
Mending Moss
Effects
Stores XP picked up
Max. Amount stored increases with modifier level
Slowly repairs the tool over time
Has to be in hotbar or offhand to repair
Multiple levels
Webbed
Book Text
All those sticky spider webs have to be good for something. Slow your enemies with them!
Resource
Cobweb
Effects
Each level increases slow duration
Slow-motion
Multi level
Knockback
Book Text
Attaching a piston to the tool and activating it at the right time seems to throw mobs further away.
Resource
1 Piston (or Stick Piston)
Effects
Adds extra knockback
Each piston increases the knockback distance
Multiple levels
Glowing
Book Text
Some glowstone and a magical ender eye. Obviously this sees the light level.
Resource
2 Glowstone , 1 Eye of Ender
Effects
Places a lightsource on low light level
Costs durability
Bane Of Arthopods
Book Text
Striking a spider with its own eyeball causes it to recoil in fear. Got a pest problem? Here is the solution. Kills bugs dead.
Resource
Fermented Spider Eye
Effects
Deals massive damage to spiders and silverfish
Multiple levels
