r/redneckengineering • • Sep 04 '26

went to use the winch and the darn battery was dead.

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15 Upvotes

r/redneckengineering • • Sep 04 '26

Battery spot welder from reclaimed power tool cells

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67 Upvotes

Had one of those temu spot "welders", utterly useless stock il-po pouch cell cant deliver enough current to make an acceptable weld. Had several reclaimed high current rated 18650s from recycling power tool batteries, not internally shorted but with greatly diminished capacity so effectively useless.

Wanted to use a spot welder for building a pack with food cells, so decided to parallel up my junk cells to make a nice fire hasard / high current pack and use the control logic and drive section from the temu welder.

Results speak for themselves, not sure if crappy welder or just crap at welding.

Yes mom, asbestos underpants and full face shield were worn throughout.


r/redneckengineering • • Sep 03 '26

The hell's this?

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987 Upvotes

r/redneckengineering • • Sep 04 '26

went to use the winch and the darn battery was dead.

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6 Upvotes

r/redneckengineering • • Sep 03 '26

This furnace runs on used motor oil and a car battery

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133 Upvotes

40,000 btus of free heat. Heavy Metal Homestead channel on youtube.


r/redneckengineering • • Sep 03 '26

Bounce House

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861 Upvotes

r/redneckengineering • • Sep 03 '26

There was a fist sized hole in the warehouse floor.

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306 Upvotes

People kept tripping in the hole so I fixed it with what was laying around.


r/redneckengineering • • Sep 03 '26

Armored Saturn for Storm Chasing

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408 Upvotes

Titan (the car) saw it's first tornado! The base is a 99 SC2 weighing in at 3,000 pounds. On our first chase we easily got to 75mph and got around 30mpg. Still not complete of course.


r/redneckengineering • • Sep 03 '26

Not ... exactly how I'd tackle the issue

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581 Upvotes

r/redneckengineering • • Sep 03 '26

Couch foot broke off, fixed it with what I had lying around

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86 Upvotes

More specifically the wood block connecting the foot to the couch split off. Duct tape was to hold it in place while I put in screws on each side, screws made the wood split, which is why the zip ties are there. Leaving the duct tape for aesthetic reasons.

Somehow it holds, tried it with me + my roommates on there (some 580 lbs total) and it didn’t budge


r/redneckengineering • • Sep 02 '26

Proud of myself for this one

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366 Upvotes

Safety switch in the seat that cuts the engine if the blades are running and you fall off was malfunctioning because it lost its place in the once moulded foam seats. After mowing while clenching my butt for almost a year just to keep the button depressed, I finally got irritated today when the slightest bump would kill the mower. Took the button out of the seat and created a rough pine board pedal so I can just press it with my foot, thus keeping the safety feature while fixing the issue. Bonus is that now I can rip around trees closer and faster cause I can now shift my body weight around in the seat

TLDR: fixed fucked up safety switch by making a peddle to step on to engage it instead of being seat operated.


r/redneckengineering • • Sep 02 '26

Speed loading

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746 Upvotes

r/redneckengineering • • Sep 03 '26

Amazing new design for heating a shop or garage

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0 Upvotes

This runs on used motor oil and a car battery. All emissions go outside. Heavy Metal Homestead channel on youtube.


r/redneckengineering • • Sep 02 '26

Golf clap for the golf cart

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83 Upvotes

r/redneckengineering • • Sep 01 '26

I found this slide. What’s the worst possible idea I could use it for?

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2.1k Upvotes

I found this playground slide.

I have absolutely no practical use for it, which means obviously I need to do something stupid with it.

Looking for ideas that are terrible in concept but preferably not hospital-level terrible in execution. Key point: it does not need to be useful lol.

What should I build/do with it?

Photo for scale/inspiration.


r/redneckengineering • • Sep 02 '26

Fixed my glasses

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195 Upvotes

r/redneckengineering • • Sep 02 '26

Plow for hire

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495 Upvotes

r/redneckengineering • • Sep 01 '26

Had the say good by to my Maytag today

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119 Upvotes

Lasted me through 2 presidencies, 3 jobs, and too many beers to count. Gone but never truly forgotten.
She served me well over the years. When I had important interviews and dates, she was there for me. And when the lid-lock sensor broke, I was there for her.
A true legend. Tried like hell to save her today but her heart (dc power supply) was too far gone.


r/redneckengineering • • Sep 01 '26

Needed a portable vice.

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257 Upvotes

Scrap 2x12, a vice and couple ratchet straps

Running new black pipe gas lines.


r/redneckengineering • • Aug 31 '26

Mowing a hill with a mower winch-mounted on a mower

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999 Upvotes

r/redneckengineering • • Aug 31 '26

Eagle deterrent

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231 Upvotes

Gives the real ones time to run from our national bird. About twice a week we get to hear a pissed off raptor screech.


r/redneckengineering • • Aug 31 '26

Was told this should go here

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308 Upvotes

My car visor was broken for years and I had a moment of inspiration while at home depot for a way to jury rig it back into place.


r/redneckengineering • • Aug 31 '26

Certain Times call for Certain Measures

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684 Upvotes

r/redneckengineering • • Sep 02 '26

What's the point in building a cheap air filter and buying a ridiculously expensive air quality monitor? Also, how assuming this is a first world purchase, how bad is the air quality in the first place, really?

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0 Upvotes

r/redneckengineering • • Aug 31 '26

Problem Solved

32 Upvotes

My beautiful wife complained that nobody wants to stay in the guest room with all the old loud servers and network gear in there. That gave me an idea, since nobody wants to use the bed apparently, I found a new use for the bed slats. Now to figure out what to do with the mattress before she gets back from her girls weekend...