Free Metalworking Project Plans: Machinist’s Screw Jack (Lathe)
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, 4,445 hits)
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Tags: Beginner, Lathe, Units (in)
October 27th, 2009 at 8:17 AM
shop student in need of plans help
October 27th, 2009 at 10:35 AM
How can I help Sam?
March 1st, 2010 at 1:36 PM
Machinists_Screw_Jack.pdf
March 1st, 2010 at 6:19 PM
Yes Joe, did you have a question?
March 11th, 2010 at 11:25 PM
i would like a copy of the plan, the part looks nice. is there a provision to make stack spacers to add height to the project?
March 11th, 2010 at 11:46 PM
I never drew up plans for these, but it’s on my to-do list. As far as spacers go, I didn’t think to make any for them. I could have used the same hex stock and made them fit into the base (button style) but I didn’t think of it. I’ll try to remember to include that in the plans.