DIY spotwelder

Good or bad experience with a vendor? This is the place to discuss it. READ THE RULES BEFORE POSTING HERE!
Post Reply
User avatar
FunDeckHermit   1 µW

1 µW
Posts: 1
Joined: Apr 23 2018 8:14am DIY spotwelder

Post by FunDeckHermit » Apr 23 2018 8:26am

Hello everybody,

A couple of months ago I bough a DIY spotwelder from
After creating a suitable power supply I have to say: This is the best product I have ever bought.

You can set the amount of energy (in Joule) you want to put into the weld. It has an automatic mode and
a foot-pedal so welding is quick.

The only difficulty is the power-supply, I use a 2S 20Ah high C-rate battery to power it. You could use a transformer/rectifier or
even a supercapacitor bank to do the same.

Here is a link to my IMGur album: LINK

User avatar
spinningmagnets   100 GW

100 GW
Posts: 10723
Joined: Dec 21 2007 10:27pm
Location: Ft Riley, NE Kansas

Re: DIY spotwelder

Post by spinningmagnets » Sep 04 2018 4:38am

Thanks for posting your experience. As battery packs become harder and more expensive to ship, individual cells remain fairly easy to ship, so I can see there becoming a growth in locally-built battery packs.

Post Reply