I think I'm getting it (this is hard XD ). So, if I have the Perk for Ebony (which I do) when I make it Legendary it will be the same if I made it at 80 as if I made it at 100 or 120 (so far I have two items that boost Smithing)?
You must have had a potion/enchant effect active when you improved the Ebony, because to get Legendary you need a smithing skill of at least 91. I know the in-game descriptions say that your smithing improvements are more effective, which might lead you to think that you can get a bigger bonus -- but this isn't true, unfortunately.
Anyway, to get the next level up from 91, you need a 108, and after that, 125... and so on, and so on (keep adding +17 -- or sometimes, it's 18 -- see the chart below). The character screen doesn't show the total modified skill number (which svcks), so you have to do the math yourself. If your skill is 80, and you drink a +20% potion (for example), then your effective smithing is 96. Simple enough, yes? Just add up all the bonuses from your gear and/or potions, and multiply that percentage by your normal skill level.
Here's the chart for determining what effective smithing you need for when you DO have the perk (it's different and much higher if you don't have the right perk):
14 : Fine
22 : Superior
40 : Exquisite
57 : Flawless
74 : Epic
91 : Legendary
108
125
143
160
177
194
211
228
246
263
280
... and so on, and so on... there is no real limit except for your smithing skill + boosts
-Loth
PS Yes, you can get Smithing levels well over the 200's. With a custom smithing pot that you make when having a 100 alchemy and all the perks, you can make up to a max of +130% Smithing potion... so with just that pot and no enchanted gear, you can get a 230 Smithing score! Add in the max crafting gear, which is 4 separate pieces of +29% smithing (need 100 enchanting and all relevant perks), and that becomes a max of +246% total! Yikes! Given that smithing improvements are mostly +2 to weapons per level, I'm sure you can see how high your damage numbers can go when you are adding like +30 or more to the base which then gets multiplied by weapon skill, perks, and other enchants to raise your weapon skills. You can do literally thousands of points of damage per hit like this -- especially if you power attack (x2), or sneak attack (up to x30 -- holy crap!)
