Spot welder with pulse control

Here's my spot welder designed around a high power transformer from a microwave.
I've took a lot of inspiration from a similar project from Jim Conner:
https://www.thingiverse.com/thing:2429361

But I've created both the model and the code from scratch.

###BOM with the pieces I've used (affiliate links):
* Nokia LCD: [link](http://s.click.aliexpress.com/e/jcExxdA)
* Encoder: [link](http://s.click.aliexpress.com/e/b7qymdI0)
* IEC Socket: [link](http://s.click.aliexpress.com/e/bjmNUeFW)
* Fuse holder: [link](http://s.click.aliexpress.com/e/cVYlxG12)
* Jack connector: [link](http://s.click.aliexpress.com/e/cNwdkLRw)
* SSR: [link](http://s.click.aliexpress.com/e/b16Vhztm)
* 5V PSU: [link](http://s.click.aliexpress.com/e/cP9Sz8XO)
* Arduino Nano: [link](http://s.click.aliexpress.com/e/ciwl9qeU)

Arduino code is avalible here:
https://github.com/krzmazur1/spot_welder/

Like my work?
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