Avoid Wasting $200 on a Poor Robot Arm π€
Learn how I built a 3-foot robot arm with a 3D printer and $200, but it turned out to be a failure. Tips to avoid the same mistake!

Electronics Guy
420.7K views β’ Jul 1, 2025

About this video
How to make a terrible 3-foot tall robot arm with a 3D printer and $200
First, I found this tutorial by Togelfritz on instructables.
Then I ordered all of the parts I needed. This included Stepper motors, metal bars, electronics, belts, and a lot of screws. These took about a month to arrive, so in the meantime I started 3D printing the parts. My printer was kinda crap at the time, so I ended up using automotive epoxy and a lot of sanding to make them smooth and a bit stronger. This ended up hurting me later.
Then I assembled everything which took about 5 hours of solid work. Then I programmed the electronics.
Finally, I gave the command to move, which caused it to fall over and stop moving. So it turned out weight is a major limitation of robot arms. I made each 3D printed part 30% heavier by adding the automotive epoxy. So this project completely failed and I lost $200.
Toglefritz Link:
(https://www.instructables.com/Build-a-Giant-3D-Printed-Robot-Arm/)
#shorts #robotics #robot #arduino #fail #electronics
First, I found this tutorial by Togelfritz on instructables.
Then I ordered all of the parts I needed. This included Stepper motors, metal bars, electronics, belts, and a lot of screws. These took about a month to arrive, so in the meantime I started 3D printing the parts. My printer was kinda crap at the time, so I ended up using automotive epoxy and a lot of sanding to make them smooth and a bit stronger. This ended up hurting me later.
Then I assembled everything which took about 5 hours of solid work. Then I programmed the electronics.
Finally, I gave the command to move, which caused it to fall over and stop moving. So it turned out weight is a major limitation of robot arms. I made each 3D printed part 30% heavier by adding the automotive epoxy. So this project completely failed and I lost $200.
Toglefritz Link:
(https://www.instructables.com/Build-a-Giant-3D-Printed-Robot-Arm/)
#shorts #robotics #robot #arduino #fail #electronics
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Video Information
Views
420.7K
Likes
9.8K
Duration
0:42
Published
Jul 1, 2025
User Reviews
4.8
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