Requirements:
Cheat Engine (any version)
Engineering 525
Realm where Cogwheel gems are in mall
Item with 2 or more sockets
Step 1.
Buy the cogwheel gems you want
Step 2.
Open Cheat Engine and target Wow.exe
Step 3.
Type in your leggings item id below where it says 'First scan' (Go to wowhead to find the item id)
Step 4.
Hit first scan
Scroll down to the bottom of the Scan List
Shift + Click the last value then hit the red arrow
Step 5.
At the bottom of cheat engine is your values
Scroll down to the bottom again and Shift + Click
Right click -> Change Value -> Type in 59449
Step 6.
Go back to your Wow
Shift + Right click your leggings (should be goggles now)
Socket a cogwheel in the second slot
Step 7.
Go back to cheat engine
Find the remaining socket id
Go back to Step 3. Repeat up until Step 5
Instead of typing in 59449, type in 52291
Step 8.
Go back to WoW and socket the Cogwheel into the first slot.