I can't upgrade the Ebony Blade or Nightingale sword on grindstone... is it bug? will it be fixed?

p.s.: is Ebony Blade two-handed or one-handed? (class)

p.p.s: ouups.. mistake *weapons*

You got the smithing perk to be able to improve enchanted armor/weapons?

You need to have high enough level of Smithing to upgrade a weapon. The appropiate perk cuts the requirement by half IIRC.

ofc.

NOT ebony sword! Ebony blade - daedric artefact

p.s.: 100 smithing + all perks

http://www.uesp.net/wiki/Skyrim:Smithing#Item_Quality

Skill level matters, as do the relevant perks.

Maybe you're just not allowed to improve artifacts? Never tried...

Some artifacts seem to have simply been left out of a list somewhere, and can't be improved.

Ebony blade - is one of this artifacts... is it bug or not?

up

Yea some artifacts cannot be improved for some reason and others cannot be improved as much as non artifacts, even though they are the same base item and you got the perk.

Like Clavicus Vile mask cant be improved and Molag Bal mace being daedric I only got to Epic with Daedric smithing and 100 skill (Got to legendary after using lots of enchanted items +potion).

So theres 2 things:
1. Not all items can be improved
2. Some items seem to ignore the fact that you got the perk to improve them more easily.

I don't know about all these silly responses. Those Items are BUGGED, and they need to be fixed.

All lower levels of the nightingale blade can be enchanted, the highest leveled blade cannot. BUG

Hopefully it will be patched.

You do not need ANY material perks to improve items, just arcane smith in the case of magical items.

Slightly OT maybe but:
Did anyone manage to improve Leather or Hide Armor further than flawless?

I have 100 in smithing and almost all perks (I don't have orcish,dwarven,daedric since I am playing a Nord Barbarian and wanted that 50% stamina regen so I went light armor with battleaxe).
I can make legendary Dragon Scale Armor but fail at getting any leather or hide stuff beyond flawless. This is also true for some weapons which I can't remember right now (those weren't orcish,dwarven,daedric so not a perk thingy I believe I wasn't able to make an Ancient Nord Hero Sword or Dagger legendary only flawless while I could make an Ancient Nord Hero Battleaxe legendary [thats what I am currently using]...).

Can improve skyforged sword and war axe.

Cannot improve skyforged dagger.

Bugs abound, indisputably.

I was able to use grind stone to improve the Molag Bal mace

besides, blood targe and shield of solitude is not upgradeable too.
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Can anybody answer on second part of my question?) is Ebony Blade two-handed class of weapons or one-handed? 'Armsman' (One-handed perk) increases Damage of EB, but Blade improves two-handed skill in use...

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P.S.: Excuse me, I speak broken English.
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Yeah I hope they fix it
(and also fix the blade of woe, which can be upgraded to legendary without even needing materal or perks)..