Image 1 — My DIY power supply
Image 2 — My DIY power supply
Image 3 — My DIY power supply
Image 4 — My DIY power supply
Image 5 — My DIY power supply
▲ 8 r/u_IvanIsak+2 crossposts

My DIY power supply

Now I can check small devices such as LEDs, relays and something!

I'm so proud of myself because it is works and nothing exploded!

Features: variable output voltage(0 to 15V) with graphical display. Used old laptop power supply(19V 2.3A).

P.S. schematic on the last photo

u/IvanIsak — 9 hours ago
▲ 22 r/DINgore+1 crossposts

My DIY power supply

Now I can check small devices such as LEDs, relays and something!

I'm so proud of myself because it is works and nothing exploded!

Features: variable output voltage(0 to 15V) with graphical display. Used old laptop power supply(19V 2.3A).

P.S. schematic on the last photo

u/Gnurx — 4 hours ago
▲ 11 r/ToolRepair+1 crossposts

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!

u/IvanIsak — 2 months ago

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

u/IvanIsak — 2 months ago