Old metal tools and food question

[partndn]

Would you be concerned?

I found a cherry stoner at an antique place a while back.  I used it today, and honestly, it doesn't work that great.
Anyhow, it's pretty messy, as anyone knows, no matter how you do it.  I had juice and stuff all over my hands.  
Then I boiled them with a little sugar and planned to make some turnovers tomorrow.

When I rinsed off the stoner and set it on a towel to dry,  I dried my hands and looked down and my fingers were mostly blackish.  Rinsed with lemon juice and it took the color off.

Why am I paranoid now that there could be some metal/chemical reaction that might not be good to eat??

The stoner is cast aluminum, but blackened from being so old.  I figured it's not much different than cast iron.  I had washed it with just normal dish soap and water before using.

Do you ever worry about stuff like this?

[paisley]

Set your worries aside.... I destine 80 pounds of cherries a year... I use a plastic destined. My hand turn black with that... Now I know to use lemon to get rid if it. Normally I avoid going out.

[partndn]

Ha!  yeah the lemon juice took it right off.  It smelled funny, kinda like ammonia but light, not strong.  Soon as I rinsed all that off, no smell of anything.

Cherries are real expensive here, and obviously I don't have a tree.  They were on major sale so I got some.  I guess I never had my hands in that many cherries before.