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Finally, I managed to make a lightweight steel folding ladder that can be in two models, folding and straight mode, strong without bending, the key to its strength is using a good C-channel and using quality lightweight steel screws, this time I used lightweight steel screws from the Materee brand, sharp & tight. The process of cutting light steel uses a hand grinder with a cutting wheel Materee, which uses fiberglass net technology and uses high-quality alumina oxide materials. Materials: 0.75mm thick light steel C channel SNI Light steel screw Materee 10x16: https://tokopedia.link/7PP4bIlu3Lb Materee grinding wheel: https://tokopedia.link/ye6Jmbru3Lb Folding ladder hinge set: Materee contact: +6281222851204 Materee social media: https://www.instagram.com/materee.id?... Hello friends, let's join / JOIN members on the tukang jadijadian youtube channel: / @tukangjadijadian HOPEFULLY USEFUL, let's support the Tukang jadijadian Youtube Channel directly by buying original TJJ merchandise = https://www.tokopedia.com/tjjofficial... watch and subscribe to the TJJ REVIEW channel = / @tjjreview TJJ MY GARAGE = / @tjjgarasiku DON'T FORGET TO SUBSCRIBE, LIKE, COMMENT & SHARE email business / Endorsement = [email protected] instagram = / tukangjadijadian facebook = www.facebook.com/agus.tukangjadijadian/