Photos

DSC07902

Posted by Bill Raddatz on March 1, 2015 at 4:14pm

To etch the bolts, I attached one wire from the negative pole of a nine volt battery to the bolt, and a submerged wire from the positive pole into the vinegar.

Comments

Bill Raddatz March 1, 2015 at 8:46pm

My old high school chem teacher would be impressed.
Uncle John March 1, 2015 at 7:54pm

Professor Bill!

This reply was deleted.

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