Craft Master

[Stapin1]

How ai can be Craft Master  Tier 1,2,3,4,5 or 6 

[Cuorion]

Each item you craft adds some crafting points to your total. When you reach 100 crafting points on a tier, the next tier is unlocked, provided your hero is eligible for that (for example, if you are level 18 and reach 100 crafting on tier 2, you'll have to also reach level 20 for tier 3 crafting to be unlocked). After reaching 200 crafting points on a tier, you unlock the chance to create rare (blue) items. Now only crafting attempts that result in blue items will reward you crafting points. At 300 points you unlock legendary (yellow) chances. Now only crafting attempts that result in yellow items will reward you crafting points. At 400 points you unlock epic (purple) chances. No more crafting points for you in this tier.

You can find a complete guide here.

[TaniaR]

Hi... I think Stapin1 ask about achievements which is in players profile, with achievements like first crafted rare, legendary, epic item; first won challenge...
Kilgor is craft master on 5 tiers, how he did this? 

[mata031]

you must have max points on primary and secondary profession so it is 400 points on primary and 600 points on secondary profession 

[TaniaR]

Now I hawe on primary profession 500 CP and on secondary 600 CP in tier 4. Question: why I not get this crafters master achievement? 

[bbi]

Each item you craft adds some crafting points to your total. When you reach 100 crafting points on a tier, the next tier is unlocked, provided your hero is eligible for that (for example, if you are level 18 and reach 100 crafting on tier 2, you'll have to also reach level 20 for tier 3 crafting to be unlocked). After reaching 200 crafting points on a tier, you unlock the chance to create rare (blue) items. Now only crafting attempts that result in blue items will reward you crafting points. At 300 points you unlock legendary (yellow) chances. Now only crafting attempts that result in yellow items will reward you crafting points. At 400 points you unlock epic (purple) chances. No more crafting points for you in this tier.

You can find a complete guide here.

You're almost right... the only change here is that reaching 100 pts unlocks the chance for Exceptional items.
the guide is currently outdated - I hope they'll fix it.
There are other changes in terms of qualities of the different crafted items and the reduced base chances to craft.