Self-sealing Stem Bolt

About: I'm an electrical engineer and work in the e-Mobility business. I really enjoy collecting skills and learning new techniques. Although I'm not an expert at any of my hobbies, I'm pleased with the results mos...

As a Star Trek Fan, I was always looking for cool things in the series that I could easily make by myself.
The self-sealing stem bolt was quite easy to make out of cardboard because the geometry is relatively simple. 

Materials used:
- cardboard from the back of a spiral notebook
- corrugated cardboard
- white glue
- aluminum tape
- acrylic paint

Tools used:
- pencil
- steel straight edge
- cutter knive
- exacto knive
- compass
- protractor
- computer with vector graphics software and printer for the label



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    12 Discussions


    1 year ago

    Startrek being startrek I picture them as a composite technology generating huge walls of a strong binding material to patch vast fdangerous hull breaks temporarily or craft permenant structures with several of tjem


    2 years ago

    We have no idea what they do, but you can trade them for seven tessipates of Bajoran land, so they've got that going for them.


    2 years ago

    Great job!
    I love movie and TV props and I love Star Trek, so I like these for more than one reason. I think you did an awesome job, they look great!


    3 years ago on Introduction

    Question they perform?
    I need 100 gross, and i offer 10 bars of gold pressed latinum.
    With those stem bolts, my family will be able to triple production of our reverse-ratcheting routing planers!

    mos daft

    4 years ago on Introduction

    2323bg, i realise it has been ages since you wrote your comment, but you are right, every home does indeed need at least one self sealing stem bolt. Unfortunately they appear to be considerably scarcer in the UK than they are around ds9...

    I salute your effort majjuss, but it does look like what it is: a cardboard model. I'm after a stem bolt which can withstand a bit of wear and tear. Which brings me to the photo/s you promised 2323bg. Did you put your plan into action? Can we see it? Have you a link to the lamp fittings in question?


    6 years ago on Introduction

    For a Deep Space Nine fan like I am, today was...well interesting. I went to Home Depot just too look around to see if anything caught my eye as being good for a project, with Halloween coming up, for a Star Trek prop. And what did I find? In the lighting fixture section, PERFECT beginnings for, Self-Sealing Stem Bolts. YES!

    The awesome find is Phillips Advance Flourescent Slimline Lamp Holders. They come two to a package for just under $5.00.

    I don't have any photos yet, but the two parts when glued together ARE Self-Sealing Stem Bolts!!! - wait untill you see this item!! When I have finished the project - I will get back here and post photos on how they look. They have, can you believe this, a spring loaded shaft on each side, jut like the ones on DS9, they are pretty good size and only need some sanding cutting, glueing and painting to impress even Nog and Jake!

    Off to start the project - I mean EVERY home needs at least one Self-Sealing Stem Both...right?


    1 reply

    Reply 6 years ago on Introduction

    Haha, just googled them...
    You're right, they do indeed have some star trek potential!
    Please do post pictures of your project, your comment made me curious!

    Best regards


    7 years ago on Introduction


    As one of the Trekkers the only thing information I can pass along is.

    It's from DSN. As shipment of them ended being bought by Nod and Jake and the original buyer a builder. My guess it was a building material item that connects sections together. I always thought this was an easy and cool prop to build. Never got around to it yet. Great Job there.


    1 reply

    Reply 7 years ago on Introduction

    Hi, the thing I built is just a cardboard model, the only thing you can do with it is slide the bolts in and out and put it somewhere to look at ;) If you have trekkie fans, they might recognize it...
    in the star trek series, no one really knows what a self-sealing stem bolt is. It's just a gimmick that appears in two or so episodes.