Special material cost for double weapons?


Rules Questions


Is a double weapon composed entirely out of a special material, or can the ends be seperate materials? Specifically, I am unsure if the cost for a mithral/adamantine weapon should be doubled or not? I thought this was mentioned somewhere that it was, but I can't find any reference to it.

Alchemical silver double weapons do double the cost though.

Cold Iron double weapons cost the same as a normal weapon, or half the amount if only 1 head is cold iron.

Are there rules about this somewhere... even in 3.5 ?

Liberty's Edge

Kor - Orc Scrollkeeper wrote:

Is a double weapon composed entirely out of a special material, or can the ends be seperate materials? Specifically, I am unsure if the cost for a mithral/adamantine weapon should be doubled or not? I thought this was mentioned somewhere that it was, but I can't find any reference to it.

Alchemical silver double weapons do double the cost though.

Cold Iron double weapons cost the same as a normal weapon, or half the amount if only 1 head is cold iron.

Are there rules about this somewhere... even in 3.5 ?

The ends may be different special materials. Check here. The first paragraph under the Special Materials heading says that this is possible, but I'm not sure how to make costs work. I think each head works as its own weapon, though, so you might need to extrapolate. Not sure though.

Edit: Specified "different" special materials.


Studpuffin wrote:
The ends may be different special materials. Check here. The first paragraph under the Special Materials heading says that this is possible, but I'm not sure how to make costs work. I think each head works as its own weapon, though, so you might need to extrapolate. Not sure though.

Thanks I knew I had seen it indicate somewhere that the ends could be different.

Can someone please advise if there is a rule about whether the cost for a mithral/adamantine weapon should be doubled or not for double weapons?


Kor - Orc Scrollkeeper wrote:
Studpuffin wrote:
The ends may be different special materials. Check here. The first paragraph under the Special Materials heading says that this is possible, but I'm not sure how to make costs work. I think each head works as its own weapon, though, so you might need to extrapolate. Not sure though.

Thanks I knew I had seen it indicate somewhere that the ends could be different.

Can someone please advise if there is a rule about whether the cost for a mithral/adamantine weapon should be doubled or not for double weapons?

If each end can be a different material, then it is only doubled if both ends are the same material. In other words, people will have to specify.

Liberty's Edge

Kor - Orc Scrollkeeper wrote:
Studpuffin wrote:
The ends may be different special materials. Check here. The first paragraph under the Special Materials heading says that this is possible, but I'm not sure how to make costs work. I think each head works as its own weapon, though, so you might need to extrapolate. Not sure though.

Thanks I knew I had seen it indicate somewhere that the ends could be different.

Can someone please advise if there is a rule about whether the cost for a mithral/adamantine weapon should be doubled or not for double weapons?

The cost shouldn't double, as far as I can tell. For the adamantine end you should just add +3,000 gold to the cost and for the mithril end divide the weapon's weight by 2 and use that number to figure out the cost of the other end.

So lets say you wanted a mithril/adamantine two-bladed sword. You should have a base of 100 gold. Add 3,000 to the cost for one end, which is then considered masterwork. Then divide the base weight by 2, which results in 5 lbs. You then (following the FAQ on d20pfsrd.com) figure out the cost for the mithril which is 2,500 gold for that end. The weapons should now cost 5,600 gold.

FAQ on d20pfsrd.com wrote:

Q: When making a mithral weapon(ie a dagger) do you halve the weight before or after you price it by the weight?

A: Use the original weight of the weapon before mithral, not after. You are applying mithral to the original weapon stats. So a dagger would cost 502gp as a dagger weighs 1 pound.

Link, look under Equipment.


Studpuffin wrote:

The cost shouldn't double, as far as I can tell. For the adamantine end you should just add +3,000 gold to the cost and for the mithril end divide the weapon's weight by 2 and use that number to figure out the cost of the other end.

So lets say you wanted a mithril/adamantine two-bladed sword. You should have a base of 100 gold. Add 3,000 to the cost for one end, which is then considered masterwork. Then divide the base weight by 2, which results in 5 lbs. You then (following the FAQ on d20pfsrd.com) figure out the cost for the mithril which is 2,500 gold for that end. The weapons should now cost 5,600 gold.

I guess that is one way of doing it. It doesn't seem right to me that the adamantine cost for one end of a double weapon would be 3,000gp, or having both ends of the double weapon as adamantine would cost a total of 3,000gp. Both cold iron and alchemical silver indicate that the cost for only one end is half the cost of a double weapon with both ends made of the same material, so it seems odd that mithral and adamantine wouldn't be the same.

I sure wish there were rules that referenced double weapons costs for adamantine and mithral.

Liberty's Edge

Kor - Orc Scrollkeeper wrote:
Studpuffin wrote:

The cost shouldn't double, as far as I can tell. For the adamantine end you should just add +3,000 gold to the cost and for the mithril end divide the weapon's weight by 2 and use that number to figure out the cost of the other end.

So lets say you wanted a mithril/adamantine two-bladed sword. You should have a base of 100 gold. Add 3,000 to the cost for one end, which is then considered masterwork. Then divide the base weight by 2, which results in 5 lbs. You then (following the FAQ on d20pfsrd.com) figure out the cost for the mithril which is 2,500 gold for that end. The weapons should now cost 5,600 gold.

I guess that is one way of doing it. It doesn't seem right to me that the adamantine cost for one end of a double weapon would be 3,000gp, or having both ends of the double weapon as adamantine would cost a total of 3,000gp. Both cold iron and alchemical silver indicate that the cost for only one end is half the cost of a double weapon with both ends made of the same material, so it seems odd that mithral and adamantine wouldn't be the same.

I sure wish there were rules that referenced double weapons costs for adamantine and mithral.

Agreed, but you should be able to extrapolate what you need... assuming symmetrical weapons of course. :P


Based on discussions here, I have tried to construct a pricing guide. Please let me know if I have interpreted the rules incorrectly:

Double Weapon Pricing Guide

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