DIY Battery Powered Spot Welder - Update

Just a quick update about my DIY spot welder. I've changed it slightly to accommodate the high current by using thicker cable and mounted the solenoid more rigidly to the battery terminal so there's not too many things flopping around.

NEW: Update video:    • DIY Battery Spot Welder - Demonstrati...  

*Nickel Strips*
http://amzn.to/2j8HQvo
http://amzn.to/2jBqHhV
https://www.ebay.co.uk/itm/Solid-Pure...

*Solenoid Relay*
http://amzn.to/2j5cLc8
http://amzn.to/2j7GpNR

*Choc Block (Electrical Connector)*
http://amzn.to/2AScb90

*Copper Nails*
http://amzn.to/2hOHNbD

*Heavy Gauge Cable*
http://amzn.to/2j4Vy2G

*Momentary Switch*
http://amzn.to/2jF69Fv
http://amzn.to/2j6hfz8
http://amzn.to/2j5rLXy