evidence: I have a bit of an issue here, and was hoping for some insightful advice. [...] I wore gloves for most of the project, but did not for final assembly. I suppose my warm sweaty hands probably made my skin more welcoming for the aluminum. [...] Disclaimer: None of this should be considered as professional medical advice. For proper medical advice concerning metal swarf or debris embedded in your skin, consult with your doctor or another medical professional.