just built an 18650 battery spot welder using a car battery and a 300a 12v solenoid. im triggering the solenoid with a programmable timer hooked to a footswitch.
the spot welder is functioning but once in a while it seems to be too strong and I have the timer set as low as it can go, at one tenth of a second. the car battery I'm using is rated at 540 CCA. and I do have 100 amp fuse in line with the solenoid.
I've seen online somewhere that someone recommended using a thinner gauge wire somewhere in this type of project to limit the current that is making it to the welding tabs. But I cannot find where I had seen this.
if anyone has an easy solution to limit the amount of current getting to the welding tabs/ends please let me know. if using a thinner gauge wire would work please explain
the spot welder is functioning but once in a while it seems to be too strong and I have the timer set as low as it can go, at one tenth of a second. the car battery I'm using is rated at 540 CCA. and I do have 100 amp fuse in line with the solenoid.
I've seen online somewhere that someone recommended using a thinner gauge wire somewhere in this type of project to limit the current that is making it to the welding tabs. But I cannot find where I had seen this.
if anyone has an easy solution to limit the amount of current getting to the welding tabs/ends please let me know. if using a thinner gauge wire would work please explain