This is the answer I got to my posting at the bugtracker regarding weight loss during the process of crafting a weapon:
"Yes there is supposed to be loss of material, and thus weight as the crafting process goes along."
"A loss of material"? Just to give you some facts and figures to visualize what he is talking about!
To craft a Claymore it takes 4 steel stocks which is equal to 64kg.
Now lets take some P&P and start calculating:
Non-alloyed steel has a relative density of 7.85 g/cm3. Taking the 64kg as the base and we will get a volume of 8,152.86 cm3.
64,000g / 7.85 g/cm3 = 8,152.86 cm3
Now lets asume that the steel bar is 2x4 cm.
8,152.86 cm3 / 8 cm2 = 1019,175 cm
So we are talking about a piece of steel with lenght of ten (10) meters!!
But back to the beginning. The final weapon has a weight of 3.5kg. Subtracting the weight of the handle which is 0.2kg equals up to 3.3kg.
64kg - 3.3kg = 60.7kg
"The loss of material" he is talking about is 60.7kg!! Or 94,84375%
"The average claymore ran about 140 cm (55") in overall length, with a 13" (33 cm) grip, 42" (107 cm) blade, and a weight of approximately 5.5 lb (2.5 kg)." [ source: Wikipedia]
So we craft a blade with an average lenght of 107 cm out of a bar of 2x4x1000 cm, whilst losing 95% of the material during this process.
Please reconsider you statement about the 'loss'.