Giant Push Pin



Where to begin with this one… Well, sometimes an idea pops into your head and it won’t leave. This is one of those. I think I was partly inspired by Simone Giertz’s giant spool lamp and Claes Oldenburg.

I started by taking very precise measurments of a standard push pin and designing a 3D model in Fusion 360. I started scaling up the size until the steel pin was close to a commonly available size of steel rod. That happens to be 34 times the size of a standard push pin and the steel rod is 1.5″. My lathe can handle up to 10″, but the largest part of the giant push pin is nearly 12″ so I had to get creative.

Due to the height restrictions of the X-Carve I had to split the top and bottom into three pieces each. The milling was time consuming, but very straight forward. I used a 1/4″ flat bit to do the roughing and a 1/8″ ball nose bit for the final pass. The results were quite good. Only a few minutes of sanding to get them smooth.

I found an add-on software for Fusion 360 called Slicer for Fusion 360. This let me cut the model into layers of a predetermined height. That happened to be 1/4″ hardboard. I initially planned to make the entire thing out of pre-cut circles but wanted to experiment with 3D carving on my X-carve so I only cut circles for the center section.

The software nested the pieces for me once I put in the max cutting capacity of the X-Carve, numbered the pieces and cut an indexing hole so assembly was bulletproof. There were a couple pieces that broke the tabs while milling so I had to recut those. That’s where the rejects came from.

Once the center was assembled I used the lathe to clean up the excess glue and gave it a quick sanding. I glued all three pieces together and gave it two heavy coats of Rustoleum Chalk Paint. This is overkill, but I found that nothing works better for sealing MDF types of wood. It also sands easily to a beautifully smooth finish. You can see how smooth and glossy the paint came out after just a single coat of Rustoleum Apple Red paint!

I wanted to have the steel pin turned by someone with a metal lathe but couldn’t track anyone down who was willing to do it on relatively short notice. Instead, I consulted Jonathan Katz-Moses ( who agreed that I shouldn’t die if I add a couple pieces to support the steel in my wood lathe. Great news! We were right! I used an angle grinder with a general purpose disk to remove the bulk of the material and a 120 grit flap disk to finish it off. It turns out that having the material turning in the lathe while grinding didn’t really help. Any slight imperfections introduced by the grinder were compounded when it began to hop. Instead, I used a paint pen like a machinist would use Dykem and marked the high spots while it was spinning. Then I’d just grind the high spots down until everything was perfect!

Sand an polish to finish on the lathe before cutting some grooves in the other end at the portaband. Those give the epoxy something to bite into so the pin doesn’t come out.

Good god, that’s a lot of steps for something so ridiculous…. It ended up being 71 layers and used 1 and a half sheets of 4′ x 8′ sheets of 1/4″ hardboard. The true superstar was my daughter for holding the pin at the end of the video. It weights 75% as much as she does!

28lbs (12.7kg) standing 30″ tall and just under 12″ wide.

I have submitted an application for a Guinness world record since I can’t find a bigger one

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– Instagram –
– Patreon –
– Plans –

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= Links To Tools Used =
Ruler:
Titebond Glue:
Rubber Gloves:
CA Glue:
Tape Cutter:
Roughing Router Bit:
Finishing Router Bit:
Angle Grinder:
Grinder Disk:
Grinder Flap Wheel:
Epoxy:

Chalk Paint:
Red Paint:

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= Shop Equipment =
Rockler Stuff:
Saw Stop:
Band Saw:
Lathe:
X Carve CNC:

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I try to respond to everyone.

PO BOX 3112
Beaumont, Alberta
T4X 1K9
CANADA

#imustcreate #imake #dpmakestuff

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All Comments

  • Awesome project lol. You can use it to pin this comment 😉

    SimpleCove July 3, 2020 6:28 am Reply
  • That's crazy

    a flipping thumbtac July 3, 2020 6:28 am Reply
  • 1 like for the rejects

    Gayathri Mugilvannan July 3, 2020 6:28 am Reply
  • Very cool project 👍🏻

    Wellerson Amarante July 3, 2020 6:28 am Reply
  • Lik e this build. The red push pin is the symbol of Officeworks the company I work for.

    Glenn Sebo July 3, 2020 6:28 am Reply
  • Center of the USA Alma, Kansas

    Jay Lommen July 3, 2020 6:28 am Reply
  • Absolutely Fabulous! Lol!

    Libby Adams July 3, 2020 6:28 am Reply
  • I love your style

    Yohann Lévêque July 3, 2020 6:28 am Reply
  • sorry…..

    richard ebbole July 3, 2020 6:28 am Reply
  • Haha… Terrific idea! Came out looking great!

    Sludgepump July 3, 2020 6:28 am Reply
  • Having watched this my first thought was to build one even bigger but then I remembered how much it hurts standing on a normal sized tack.

    Beeley Wood July 3, 2020 6:28 am Reply
  • It's awesome amazing superb 👌👌👍👍👍

    SEKH SIRAJ ALI July 3, 2020 6:28 am Reply
  • Love your work and the way you edit the videos! Sydney, Australia. 👍

    Peter WOOD July 3, 2020 6:28 am Reply
  • Awsome project

    Dallas Woiken July 3, 2020 6:28 am Reply
  • A total selfish waste of time resulting in a useless final project. I LOVED IT. You have inspired me to check a few of my own "Why the heck did you make that" projects off my list. Great job and thumbs up.

    Joe Pieczynski July 3, 2020 6:28 am Reply
  • Is that a giaco whatever shirt

    KillteXx July 3, 2020 6:28 am Reply
  • maker of extra large office supplies

    Camera2Studios July 3, 2020 6:28 am Reply
  • Very cool project.

    Stanley Byers July 3, 2020 6:28 am Reply
  • Your daughter is the sweetest thing 😍

    timothydalton90 July 3, 2020 6:28 am Reply
  • Well done… smallest human you could find… LOL

    maconSTUFF July 3, 2020 6:28 am Reply
  • thats about the best video i've seen in  a WHILE, i'm a blacksmith but i love watching wood working

    Jims GoproAdventures July 3, 2020 6:28 am Reply
  • Could’ve just done the whole thing in the lathe with one log, just sayin…😆

    Conan Seibel July 3, 2020 6:28 am Reply
  • I have absolutely no idea where to put it or what to use it for, or even when to make it, but…………… I WANT (uhmm wait, no,)I NEED ONE!

    samuel bhend July 3, 2020 6:28 am Reply
  • 01:41 Emotional Burden 😁😁😁

    Kamil Zmeškal July 3, 2020 6:28 am Reply
  • Now that we have the proper tool, let's pin this video! 🙂

    Alex Merlin July 3, 2020 6:28 am Reply
  • That's awesome. got yourself another subscriber. job well done.

    Bens sawmill July 3, 2020 6:28 am Reply
  • Lol! Amazing 😀

    Maya M. July 3, 2020 6:28 am Reply
  • Not knife, it's for the professional. Own a handgun, it's easier to counter ambush the intruder or gang of robbers. It's your responsible to protect your family. Bye.

    GOD createdStMichaelSword, Steel,Gun4HomeDfenseDuty July 3, 2020 6:28 am Reply
  • Kill la kill

    retos ý mas!!! July 3, 2020 6:28 am Reply
  • Increíble!!!

    S O A P July 3, 2020 6:28 am Reply
  • Un pò una cazzata, ma carino. Sempre bravissimo ed originale!

    simone m July 3, 2020 6:28 am Reply
  • Nice))

    Сын старого Лиса July 3, 2020 6:28 am Reply
  • Why did you want this

    The minecrafters July 3, 2020 6:28 am Reply
  • Yes! emotional burden

    Frank Wiebenga July 3, 2020 6:28 am Reply
  • LMAO at emotional burden weight. Good stuff brother!

    Dan The Maker Man July 3, 2020 6:28 am Reply
  • cant help to think there was an easier way of doing it xD

    Memo R July 3, 2020 6:28 am Reply
  • You make a lot of cool videos, but this one was outstandingly amazing, very well done!

    Maximilian Ertl July 3, 2020 6:28 am Reply

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