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Since I work alone in my workshop, I need it so much, which will provide great convenience when lifting heavy loads, I made an electric and double overhead crane system. Thank You For Watching I would be happy if you like, share and subscribe I am waiting for your support to make better projects. Thank you to all friends who commented. This is the first crane I've ever made and of course I have some mistakes. I continue to improve myself. Thank you for your interest… This is how this project was done due to some limited conditions in my workshop. That's why I couldn't attach a column from the floor and had to hang it from the ceiling. If my work area was a little wider and the ceiling a little higher, it would have done a much better job. I could not add my work in the attic to the video. I couldn't take a video because the attic was too dark and narrow. I'm sorry for this. Actually, it would be better if I forced the conditions and took a video. I'd appreciate it if you could attribute this to my being a newbie in video business. In the comments, it was specifically asked how the screws were fastened. I fastened the joists with long screws and nuts in the attic. I used a thick steel plate and washer before the nut. In the technical data of each of these nuts (M14), the yield stress is over 2.5 tons. In other words, the carrying capacity of the screws is much higher than the load I can lift. The bridge height in the middle is 160mm and the side beams are 140mm in size. The bridge span is 400 cm. All calculations were made when installing the crane beams and the bridge. In terms of capacity, 1.2 tons is the capacity of the crane machine. Of course, I never lift 1.2 tons because I don't need it. The maximum load I will lift does not exceed 0.5 tons. That's why I'm not worried at all. https://www.instagram.com/mechanic_technic/