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Free Metalworking Project Plans: Machinist’s Screw Jack (Lathe)

100_0072

Material: Steel
Units: (in)

After the Spring Center and the Soft Faced Hammer, the next lathe project I tackled was a set of  Screw Jacks. Why? Well, to create my jacks I had to build on my tapping and single point threading skills, both of which needed some work.

The project took several tries because during the threading process I kept setting the cross slide at 29.5 degrees from the centerline of the part, rather than 29.5 degrees from perpendicular to the centerline of the part. My threads kept coming out looking like buttress threads. I was so frustrated!

But once I figured out what I was doing wrong, my project progressed nicely. I don’t have a set of plans available for you to build my own, but I did find a set of plans by James Appleby for making a much simpler version of the ones I made. I’ve attached the plans below. Be sure to visit the Home Metal Shop Club for this project and other great project ideas.

If you’d like a set of plans for my jacks, leave a comment. If there’s enough interest maybe I’ll create a set of plans for them.

  Machinists_Screw_Jack.pdf (331.8 KiB, 7,333 downloads)
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About Tyler

Tyler is a hobby machinist and 3D printing aficionado. He teaches computer programming and web development at Highline College near Seattle. Tyler founded Projects In Metal in 2008 because he was frustrated by the lack of free plans available for hobby machinists.