Well, done - this reminds me on a system I had done to open louvers on top of the front door using a multi-pulley system - I did not use any counterweight though, but what was cool about it was that I managed to make a system that opened and closed the two louvers simultaneously with the rope hanging only from one side. > Angle grinder for cutting the "U" beams Tools that I needed to make this instructable: > 700mm of sewer PVC pipe of 75mm diameter
Materials left to get other level of finishing: > 6 pieces of aluminium rivets 3,2x12,7mm > 6 sets of 6mm steel screws for concrete fixturing > 1 piece of M8x95mm cut of threaded rod > One 60A1 sheave (Diameter 60, A1 channel) > Two 50A1 sheaves (Diameter 50, A1 channel) > 0,5m of " U" Beam (35x10mm) for office divider panels Well, I didn't take any picture of all the material that I used in this instructable, but here is a list of the most important that were used: Well, let's go to the instructable: Bill of Materials: I'd like to apologize for any grammar or english errors, because i'm brazilian and i am also trying to learn english while publishing some few ideas that i was able to put in practice!
Hi, everyone! Welcome to my first instructable! I hope it will be helpful to anyone who wants to make an automatic door closer with this design, using sheaves and internal counterweight.
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