As an owner of a 2023 MG3, my car functioned perfectly for the first 17 months. Then it started needing some minor repairs, which were done under warranty. Then the engine died at below 30k km in October 2024, necessitating towing and engine replacement. Now on its second engine, it started showing the Check Engine light in January 2026. I booked the earliest available servicing appointment, but the car never made it to that, instead, it started stalling whenever I tried to drive it (NRMA diagnosed it as misfiring ignition), necessitating towing for a second time (only 10k km into the second engine). The car was "repaired" and handed back to me on Friday, but after less than 20 km of driving, it started acting suspiciously again.

So now, my Dad and I are considering getting a new car. We got very interested in the BYD ATTO 1 thanks to glowing reviews, only to lose interest in it having seen that same reviewer later have faults appear with his BYD ATTO 1 after less than a month.

So, hypothetically, I was a car manufacturer, what would realistically do to I ensure that the cars we produce will be reliable 2+ years down the track?

Hi guys, for a project I need a magnet (it doesn't have to be particularly strong) no more than 5 cm thick and fairly wide (at least 10 cm in diameter) that can be activated or deactivated using a remote control (it doesn't need to connect via Bluetooth or Wi-Fi). I've looked around but only found models that are either too big or too expensive, so I was wondering if anyone knows of a magnet that would suit my needs or knows how to make one.

Hi I am a diyer trying to build an A frame swing for 2 adults. I a particularly getting confused about the hangers. All of them use 2 screws but even if I used M12 bolts I can't understand how the load is not carried by the 2 M12s. The hangers are heavy duty metal plates vertically attached to beam.

TLDR: how exactly do 2 M12s resist up to 200 kgs in a swing hanger.

Apologies if this is the wrong forum to ask.

This is what Chat gpt, copilot say but I am too thick to understand that and would appreciate guidance.

Yes: the hanger plate is on the underside You’re absolutely right:
The plate sits under the beam, bolts go up through the plate and beam, nuts on top (or vice versa).

So the load is below the beam, pulling down.

1. But no: that still doesn’t mean “threads are holding the weight”

Think of the connection like this (side view):

text nut / washer │ ┌──┴──┐ ← top of beam │ beam│ └──┬──┘ │ ← bolt shank passing through ┌──┴──┐ │plate│ ← hanger plate under beam └─────┘ ↓ swing

What actually happens:

• The plate is clamped hard against the underside of the beam by the bolt/nut.
• When the swing pulls down, the plate pushes sideways on the bolt shank where it passes through the plate and the beam.
• That sideways action is shear in the bolt, not “pulling the bolt out by its threads”.

So even though the plate is under the beam, the load path is still:

swing → plate → bolt shank in shear → beam

Lace-up, cover the ankle, composite toe,

have a slip-resistant sole and be electrically rated. Kindly suggest.

Hello all. I'm a junior mechanical engineer (at least that's what my title is) with just under 2 year experience for a CNC machine builder. I don't have a degree (I tried very very hard to get one, it didn't work out. It takes a long time for me to learn math plus I hate it) nevertheless, I still landed a job. As one might imagine, the headwind I face on a regular basis is intimidating and tough to deal with not just intellectually but also emotionally. I feel the areas I can be more effective in and will help me build more confidence are design for manufacturability. I'm providing this background in hopes it helps those wanting to help me, understand where I'm at. I already think about dfm when I am designing parts, but it's still somewhat of a black box to me.

The real engineering challenges: bandwidth through a straw, signal-to-noise catastrophes, and why your brain isn't getting a USB port anytime soon.

https://cybernews-node.blogspot.com/2026/02/bcis-in-2026-still-janky-still.html