handicraft work

spot welding #3

Today the last blog about my self-made spot welding machine. The ordered parts from china arrived these days and i could assemble the whole machine.

two connectors and the new frontpanel

With the additional parts it becomes very tight in the old housing. But some time later all holes and the frontpanel cutout were made and the parts mounted.

safety feature: upper left a resettable 10A fuse, on the left a bimetallic switch
The 9V auxiliary transformer is mounted under the circuit board
the new front: for the display unit the right distance bolts are missig…

All i had to do now was to connect the electrodes to the plugs and equip the foot switch with a hollow plug. Afterwards the first battery packs could be welded, equipped with a battery management system and packed in heat shrinkable tubing.

foot switch and electrodes
battery packs, made from old laptop cells
before i assembled the packs i checked the cells with a imax b6 balance charger

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