What's IIRC?
IIRC == If I Recall Correctly
Rasyr> I think you're wrong on that one. A material bonus is a material bonus. Mithril, Laen and Eog are materials which is magical by their nature but you can still enchant them. Looking at Enchanting Ways (p.165 RMC Spell Law) there is no mentioning of any specific materials needed to cast the weapon II, III, IV, ... spells. Thus you should be able to cast a Weapon II as well as a Weapon IV spell on a mithril weapon.
Possibly you need the Work Mithril (p.167 RMC Spell Law) spell to make the weapon in the first place.
The Yes, those materials are considered magical by nature, and they
require specific spells to work them, with the result being an object with an inherent magical bonus.
This does not mean that the item cannot be further enchanted, it only means that items of these materials are ALREADY enchanted to some degree by their very nature and that the bonuses received from items made of these materials is considered to be (and will detect as) magical in nature.
Sticking to the rules (p.55 RMC Spell Law), "If weapons and armour are enchanted to get a magical bonus, then the user can elect to use either the non-magical bonus (due to material) or the magical bonus (but not both)."
I would call the Enchanted steel I & II the odd ball since they should be Low steel (I) & High steel (II) with an enchantment.
No, the entire bottom range of that table (08-01) is the oddball since those bonuses are considered magical even though they are partly material in nature as well. I would rule that the primary deciding factor is that
a spell of some sort is required to create an object of that material. You can create Low and High Steel weapons without spells, but you cannot create Enchanted Steel I or II weapons without the use of spells, just as you cannot create mithril, laen or eog weapons or objects without the use of spells.
The table lists them as being "magic", thus their bonuses as treated as being magic bonuses for the purpose of whether or not they can be combined/stacked with other bonuses just as their bonuses are treated as magical to determine what they can or cannot hit. This is because these materials require the use of spells to create the finished objects.You can consider that to be the official ruling.
This means that such things as an Enchanted Steel II sword automatically has a +15 magical bonus OR a +10 Non-magical bonus that can be used. While a Mithril Sword only has the +20 magical bonus.
Anywho, keeping within the rules as far as I can interpret them.
Craftsmanship and material bonuses stack.
I agree here, and actually said so up above, Craftsmanship and non-magical material bonuses DO stack.
There is no mentioning of magic and craftsmanship besides magical weapons being considered superior craftsmanship with bonuses to strength. (I saw it somewhere?)
Craftsmanship bonuses are not magical in nature, so they would stack with other non-magical bonuses.
However, the rules do clearly state that material (non-magical) and magical bonuses do not stack. So by simple extension, other non-magical bonuses would not stack with magical bonuses.
Therefore, Craftsmansip bonuses would not stack with magical bonuses.
So, to make a mithril weapon you would have to cast Work Mithril once a day during the creation process.
To make a ordinary +20OB magical weapon you would have to cast weapon IV once per day during the creation process.
Either way you get a +20 magical weapon.
Now, throwing the craftsmanship into the mix and this is the interesting part.
Creating both weapons equal with a +25 bonus for Masterwork you get.
1) +45 Mithril weapon. (magical)
2) +20 magical or +25 non magical weapon.
No, the Mithril Weapon would be the same as #2 on your list there.
Of course replacing the Iron with Black alloy you get.
3) +20 magical or +45 non magical.
Now taking this one step further you decide to cast the same Weapon IV spell once per day during the creation of the mithril weapon and you get.
4) +45 Mithril weapon and it's still magical.
So, the casting of the weapon IV spell is just a waste of time. To actually gain any benefit from a weapon spell you would need a weapon X spell (+50 bonus).
No, casting the Weapon IV isn't just a waste of time.