Making a screw (rod with threads)

Wednesdays open lab was on the art of screw making. The class was tasked with making 2 screws for a trombone spit valve. 

We were given a steel rod to turn into the screw. 


The first step was to use our bench motor and little files to get the inital shape. I used my rectangular file.

 

This is the profile I was going for. 


Next was the task of creating the threads so it is a screw. For this we used an adjustable die. This step was pretty fun. 


After creating the threads, I double checked if the threads turned out correct. 


Then I marked and cut both ends with my jewlers saw so the screw was the correct length. 


Finaly I used my jewlers saw to make a screwdriver notch and then it was done!















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