Engineering

Engineering 1-110

The first 100 or so levels of just about every tradeskill are the easiest and cheapest levels to level up, so enjoy it while it lasts!
Projected Skill Item Components Required (per craft) Sell or Keep
1-21 Rough Blasting Powder 1 Rough Stone Keep
21-31 Rough Dynamite 2 Rough Blasting Powder/1 Linen Cloth Sell
31-51 Handful of Copper Bolts 1 Copper Bar Keep
51-52 Arclight Spanner 6 Copper Bar Keep
52-80 Copper Tube 2 Copper Bar/1 Weak Flux Sell
80-90 Coarse Blasting Powder 1 Coarse Stone Keep
90-100 Copper Modulator 2 Handful of Copper Bolts/1 Copper Bar/2 Linen Cloth Sell
100-110 Silver Contact 1 Silver Bar Keep


Engineering 110-220

Moving on!
Projected Skill Item Components Required (per craft) Sell or Keep
110-125 Large Copper Bomb 3 Copper Bar/4 Coarse Blasting Powder/1 Silver Contact Sell
125-135 Heavy Blasting Powder 1 Heavy Stone Keep
135-150 Heavy Dynamite 2 Heavy Blasting Powder/1 Wool Cloth Sell
150-160 Big Bronze Bomb 2 Heavy Blasting Powder/3 Bronze Bar/1 Silver Contact Sell
160-175 Iron Strut 2 Iron Bar Sell
175-176 Gyromatic Micro-Adjustor 4 Steel Bar Keep
176-190 Solid Blasting Powder 2 Solid Stone Keep
190-205 Big Iron Bomb 3 Iron Bar/3 Heavy Blasting Powder/1 Silver Contact Sell
205-220 Unstable Trigger 1 Mithril Bar/1 Mageweave Cloth/1 Solid Blasting Powder Keep


Engineering 220-300
Projected Skill Item Components Required (per craft) Sell or Keep
220-235 Mithril Casing 3 Mithril Bar Keep
235-250 Hi-Explosive Bomb 2 Mithril Casing/1 Unstable Trigger/2 Solid Blasting Powder Sell
250-260 Dense Blasting Powder 2 Dense Stone Keep
260-290 Thorium Widget 3 Thorium Bar/1 Runecloth Sell
290-300 Thorium Shells 2 Thorium Bar/1 Dense Blasting Powder Sell


Engineering 300-375

Since the release of the Wrath of the Lich King leveling from 300-375 has gotten a whole lot easier with the addition of new formulas.

To level up above 300 you'll need to visit a Master Engineering Trainer (or Grand Master Engineering Trainer, which are listed in the 375-450 section):
Master Engineering Trainer Location Horde or Alliance
Johnathan Garrett Shadowmoon Village, Shadowmoon Valley Horde
Mack Diver Zabra'jin, Zangarmarsh Horde
Zebig Thrallmar, Hellfire Peninsula Horde
Xyrol Area 52, Netherstorm Horde/Alliance
K. Lee Smallfry Telredor, Zangarmarsh Alliance
Lebowski Honor Hold, Hellfire Peninsula Alliance
Niobe Whizzlespark Wildhammer Stronghold, Shadowmoon Valley Alliance
Projected Skill Item Components Required (per craft) Sell or Keep
300-305 Handful of Fel Iron Bolts 1 Fel Iron Bar Keep
305-310 Fel Iron Casing 3 Fel Iron Bar Keep
310-330 Fel Iron Bomb 1 Fel Iron Casing/2 Handful of Fel Iron Bolts/1 Elemental Blasting Powder Sell
330-340 Adamantite Grenade 4 Adamantite Bar/2 Handful Fel Iron Bolts/1 Elemental Blasting Powder Sell
340-350 Felsteel Stabalizer 2 Felsteel Bar Sell
350-370 Handful of Cobalt Bolts 2 Cobalt Bar Keep
370-375 Volatile Blasting Trigger 3 Cobalt Bar/Crystallized Water Keep


Engineering 375-450

This is the final part of the guide! If you are having a hard time keeping up with your demand for gold while doing this guide check out this Gold Guide.

To level up above 375 you'll need to visit a Grand Master Engineering Trainer:
Grand Master Engineering Trainer Location Horde or Alliance
Jamesina Watterly Vengeance Landing, Howling Fjord Horde
Sock Brightbolt Valiance Keep, Borean Tundra Alliance
Justin Oshenko Dalaran Horde/Alliance
Tisha Longbridge Valgarde, Howling Fjord Alliance
Projected Skill Item Components Required (per craft) Sell or Keep
375-390 Overcharged Capacitor 4 Cobalt Bar/Crystallized Earth Keep
390-400 Froststeel Tube 8 Cobalt Bar/Crystallized Water Keep
400-405 Diamond Cut Refractor Scope Froststeel Tube/2 Handful of Cobalt Bolts Sell
405-415 Saronite Bomb 5 Saronite Bar/Volatile Blasting Trigger Sell
415-420 Saronite Arrow Maker 15 Saronite Bar Sell
420-425 Mana Injector Kit 12 Saronite Bar/2 Crystallized Water Sell
425-430 Mechanized Snow Goggles 8 Saronite Bar/2 Borean Leather/1 Eternal Shadow Sell
430-435 Sonic Booster 2 Froststeel Tube/4 Overcharged Capacitor/2 Handful of Cobalt Bolts Sell
435-450 Gnomish Army Knife 1 Skinning Knife/1 Blacksmith Hammer/1 Mining Pick/10 Saronite Bar Keep One for Yourself