Mixing my own shibuichi to make the habaki for my wakizashi project. To obtain an alloy composed of 80% copper and 20% silver using 800 silver (80% silver and 20% copper), I used 75% pure copper and 25% 800 silver. Get Free Email Updates!Signup to receive email for important notifications. Thank you for subscribing. Something went wrong. I will never give away, trade or sell your email address. You can unsubscribe at any time. You will not receive spam.