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Spotwelder

These articles provides instructions on how to build a DIY spot welder, a device that can join two pieces of metal together. With a simple design using a microwave oven transformer and other components, the spot welder can be built relatively easily and inexpensively. The article includes detailed instructions, making it accessible for those with basic electrical skills.

Spotwelder

Spot welders from other users

Many people have bought the spot welder controller. Some have built very nice spot welders with this, see the following examples:

Spot welder controller for the Kende DN-100E (Harbor Freight) prevents blown fuses

Avoid blowing up fuses A serious problem is that circuit breakers or fuses in the breaker box are blown frequently when using spot welders. By the use of the here described spot welder controller,...

Old spot welding pulse timer controller bare PCB v1

For the new version see HERE. This was the bare PCB for the spot welder controller, without components, to assemble by yourself. Spot welding pulse timer control panel with TFT di...

TFTディスプレイ付きスポット溶接機パルスタイマー制御装置

当商品は、溶接前パルス、溶接停止と溶接時間の設定をし、スポット溶接機の出力を操作できます。

Dual pulse battery tab spot welder controller

This advanced controller was used by many people and has a unique reduced inrush current circuit that prevents main fuse blow up.

DIY battery tab spot welder

I have developed the D.I.Y spot welder because I needed a special spot welder for the building of my Maxun One solar bike. It turned out that the spot welder is being built by many people...

Spotwelder controller info for nerds

The spotwelder controller board explained The spot welder uses the Arduino Universal AC Power Control board and can therefore be used for many other applications such as vacuum pressure controller...

Old spot welder controller smd v5

For the new version see HERE I have developed the D.I.Y spot welder because I needed a special spot welder for the building of my Maxun One solar bike. It turned out that the spot welder is b...