u/IvanIsak

Hi everyone,

I pulled the spindle (arbor shaft) from my old 185 mm (≈7¼") circular saw. The internal thread for the blade bolt is completely messed up — it looks like someone welded or melted the inside, and the left-hand M8 bolt (M8×1.25 LH, standard for many circular saws) doesn't screw in at all.

I can't find an exact replacement spindle for this old model, and even if I do, they're ridiculously expensive (~20+ USD for a used one).

What’s the best way to repair this?

Thanks in advance!

Beginner here, welded this guy today, used 3.0mm rods, maybe 42 EU or E6010, amperage ~80-100A but very cheaper welder 💁🏻‍♂️

Before work of couse I polished both metals to blinking color

Am I used wrong technic or my welder cannot support requires amperage?

Albeit, I saw few videos and used zig-zag style and grindered metals after each walk