adding tin

[NordicG3K]

Okay, I've got a newbie question for you all.

In the past I've always used straight WW for my bullet casting. I've decided to add some tin to the mix and picked up a 1lb bag of tin cut wire from Rotometals. For the proper mix, do I just weigh out how much WW I'm going to use and then take 2% of that and add the appropriate number of ounces of tin? This is probably an obvious question, but it's my first time and I didn't want to screw it up. Thanks in advance.

[Wireman134]

Weight the amount of WW's or WW alloy you plan to use. Say 160oz. (10lb.) Multiply 160x.02(2%)=3.2oz. Take 3.2oz. away from your WW's and add 3.2oz. Sn (tin). Your going to have to estimate what those steel clips will weight a subtract that from your total. If you weight the WW first w/clip then melt the lead off and weigh just the clip and multiply by the amount of WW's you have you can have a close idea what those clips weight. Best thing to do would be to smelt the WW's and remove the clips, pour alloy in ingots (muffin tins)

[NordicG3K]

I've already got the WW melted into ingots so the clips aren't an issue. Thanks for the rundown. That's kind of what I figured, but I wanted to make sure.

[jsizemore]

I estimate that clip-on ww have .5% of tin already. So I only add 1.5% tin. So for 10 lbs of ww (160 oz.) I add 2.4 oz. of tin.

[cajun shooter]

Remember when using bar solder that if it is 50/50 then only 50% is tin. 63/37 and so on. Pure tin is the easy way but very costly.