Modifying a screw is certainly something that sooner or later happens to have to be done, for example for the length or the size of the screw head.

However, it is not easy to position a screw in a 3jaw chuck, on the side of the thread there is a risk of ruining the thread, on the side of the head of the screw it will certainly turn eccentric. (the head of the screw is never coaxial with the thread, seeing is believing.)

With this simple device it is possible to work both the thread and the head, without damaging one or the other; a cut screw expands, pushed by a smaller screw, locking itself in place and preventing the screw being worked on.

A bush must be built for each type of screw (in my case I made an M6, M8 and M10) but it's fine up to M12, you can shorten it or create an adjustment pin or simply create a custom head.

The 2 screws one inside the other allow you to avoid using a wrench to screw a nut and counternut, everything is done by hand.

I really hope you enjoyed my video and in case it will be wonderful if you will subscribe to my channel!

Thanks for watching,
Alberto.

Below are links to some of the products we use:

Special Drill bit: https://amzn.to/42ExRC4
My favorite gloves: https://amzn.to/3Jaj1fF
Lathe Tool: https://amzn.to/3PcfJMA

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⏱TIMESTAMPS⏱

00:00 Intro
02:48 Making the exagon
05:09 Making the big screw
05:10 Making the stop screw
05:49 Making the screw bushing
06:19 Final Assembly and test
09:33 Conclusion

#diy #tools #lathe

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