How to Build a Giant Torsion Box | Build It Make It

I built a giant 4' by 8' torsion box work top using three sheets of MDF (plus a little extra). Follow along to make your own.
These plans are based on 49" x 97" MDF which is the normal size of MDF I have found in North America.
To make the torsion box cut one of the sheets of MDF into 13 separate strips each 3.5" wide. Keep seven of those and cut the other strips into smaller blocks 7.4" or 7 13/32".
Using three 2x6 or 2x8 jointed stretchers make a flat surface across two saw horses. I like using a laser level to get my surface flat, but you can also use a pair of winding sticks, or cross strings.
Start by gluing down a long stretcher on one side inset about 1/2 and inch. If it starts to move around a bunch you can use some clamps to hold it in place. After this you can use a brad nailer to attach the smaller 7.4" blocks at the next row. The offset is 7.4" so you can use the bocks to space off the next one. After that, lay another long piece down and nail it in. For the next set of cross braces offset them in the center of the previous row for easier nailing. Continue this across the whole width.
For gluing on the top sheet, make sure you glue the whole top edges and then brush or roll the glue so it is consistent. You can just set the top on and it should be flat. If you check which a straight edge and there are high spots you can add some weights to bring it down.
After the table top has dried you can add a border around it to protect the edges. I chose hard maple, but have used pine in the past, as well as no border at all.
Thanks for watching!
Metabo HPT Brad Nailer Kit - geni.us/p4NBVnt (Amazon)
Thanks for the music from StreamBeats check them out - / @streambeatsbyharrishe...

Пікірлер: 38

  • @puntabachata
    @puntabachataАй бұрын

    Looks great. I think you could make a few spacer pieces instead of all the internal measuring and marking to make it easier and more foolproof.

  • @BuildItMakeIt

    @BuildItMakeIt

    Ай бұрын

    That's a great idea, thanks!

  • @ldj051987
    @ldj0519873 жыл бұрын

    A great finish for MDF is oil-based poly mixed 50-50 with laquer thinner. It soaks in to the surface and hardens the MDF, and gets pretty deep too. You can do several coats and you get a really great hardened surface with a nice sheen to it.

  • @BuildItMakeIt

    @BuildItMakeIt

    3 жыл бұрын

    Yeah that is a great idea. I really like thinned poly but wanted to see how the Rubio would do on MDF since I seem to have it on hand all the time now. Failed experiment, next time I'll do 50/50 poly. Thanks!

  • @jsmxwll
    @jsmxwll2 ай бұрын

    i know i'm a bit late to comment, but i really like shellac on my mdf shop surfaces. not as hardwearing as some other options, but easy to apply and repair, just don't drop your rag covered in denatured alcohol on it. thinned oil based poly in several coats will soak in and build a solid protective surface but is a real pain to repair.

  • @BuildItMakeIt

    @BuildItMakeIt

    Ай бұрын

    Thanks, I have turned to shellac since then so we are totally on the same page. I really like the reparability like you said.

  • @a91customs
    @a91customs Жыл бұрын

    Nice video! Thanks for making.

  • @BuildItMakeIt

    @BuildItMakeIt

    Жыл бұрын

    Thanks for watching! This was my first video so I didn’t really know what I was doing recording wise, but wanted to show the top. Take care!

  • @vikassm
    @vikassm Жыл бұрын

    2-3 coats of Danish oil applied via roller works really well for sealing & strengthening MDF. In any case, You could throw on a nice sheet of 1/4" thick plywood for the worktop.

  • @BuildItMakeIt

    @BuildItMakeIt

    Жыл бұрын

    Thanks! The 1/4 plywood top is a good idea, also the danish oil. Should have been way better.

  • @hyrumkress6202
    @hyrumkress62023 жыл бұрын

    great video!

  • @BuildItMakeIt

    @BuildItMakeIt

    3 жыл бұрын

    Glad you liked it.

  • @joshsoorlin579
    @joshsoorlin579 Жыл бұрын

    Good vid man ur gonna be a big channel one day man !!!

  • @BuildItMakeIt

    @BuildItMakeIt

    Жыл бұрын

    Thanks :)

  • @Fishing-gs9ku
    @Fishing-gs9ku Жыл бұрын

    Good ole shellac bro!

  • @BuildItMakeIt

    @BuildItMakeIt

    Жыл бұрын

    Thanks! That is a great option. Yeah, that finish sure was a disaster :)

  • @maico450
    @maico4502 жыл бұрын

    Turn your volume up!

  • @BuildItMakeIt

    @BuildItMakeIt

    2 жыл бұрын

    I agree my audio is pretty bad, I did this on my phone and had some issues. This was my first video, and hopefully I'm doing better on my later ones. Thanks for watching!

  • @coreys63
    @coreys632 жыл бұрын

    probably should have used a sanding sealer on the top first. Then finish it.

  • @jimparker7745
    @jimparker77452 жыл бұрын

    Nice project, thanks for sharing the video. But for the love of Pete, use a push stick! It's sitting right there on your table saw... ;-)

  • @BuildItMakeIt

    @BuildItMakeIt

    2 жыл бұрын

    Yeah, I used it while cutting the MDF slats but when cutting the side pieces I didn't since they were wider, but it would have still been better to use it.

  • @Rainman270
    @Rainman270 Жыл бұрын

    I made my outfeed table out of a torsion box. I attached the inner ribs with an air stapler and came at the ribs from above, that way I didn’t have to fit the gun in between the ribs.

  • @BuildItMakeIt

    @BuildItMakeIt

    Жыл бұрын

    That’s a good idea. It would make it not so finicky getting the gun in there. Hanks for the tip!

  • @RobSchweitzer
    @RobSchweitzer2 жыл бұрын

    I made my outfeed/assembly table with maple and walnut boards that were too ugly or split for furniture. Sanded quickly with 80 grit and applied Rubio so that my garage wouldn't smell like polyurethane for a week but the top soaked that stuff right up. Not as bad an experience as yours but not fun at all. I think Rubio does not play well with more porous surfaces that only had coarse sanding, or in your case MDF (it also sucks on plywood in my experience). I normally sand projects for Rubio up to 180 before applying it. I need to flatten my table a bit (hardwoods was a dumb idea in hindsight) and I'll suck it up and use poly next time.

  • @BuildItMakeIt

    @BuildItMakeIt

    2 жыл бұрын

    Thanks, I appreciate your feedback. I have been living with the torsion box for while but it is getting pretty beat up and need to sand it down and I will certainly use poly this time.

  • @RobSchweitzer

    @RobSchweitzer

    2 жыл бұрын

    @@BuildItMakeIt I've only been using my table about two months and the finish is definitely beat to hell as well. I freaking love Rubio for furniture, but not for an assembly table haha!

  • @BuildItMakeIt
    @BuildItMakeIt3 жыл бұрын

    Thanks everyone for watching my first video. Any constructive criticism is welcome, as I am just learning to do the video/tutorial part of this.

  • @cerberus2881
    @cerberus2881 Жыл бұрын

    I would have used RM on the Maple trim and nothing on the MDF.

  • @BuildItMakeIt

    @BuildItMakeIt

    Жыл бұрын

    Thanks! I completely agree that would have been the best. I really messed that one up :)

  • @jodyclaborn
    @jodyclaborn8 ай бұрын

    7.4 inches long? That’s a very odd way to reference a length in inches. Maybe 7 3/8 instead?

  • @BuildItMakeIt

    @BuildItMakeIt

    8 ай бұрын

    Yep, I need to hide away those engineer scale tape measures. My machine shop work sometimes still sneak out when I am talking. I have been working at getting better at saying fractional measurements or working in metric as this was my first video I ever made. Thanks for the tip.

  • @mikegrant8031
    @mikegrant80312 жыл бұрын

    why did you choose mdf?

  • @BuildItMakeIt

    @BuildItMakeIt

    2 жыл бұрын

    I used MDF for a couple of reasons. First it is super stable, second it is cheap, and third it is super easy to work. You could totally do it out of plywood if wanted.

  • @matthewsheahan9435
    @matthewsheahan94352 жыл бұрын

    Flip it over, refinish the other side. Nobody will ever know ;)

  • @BuildItMakeIt

    @BuildItMakeIt

    2 жыл бұрын

    The greatest woodworker trick…hide your mistakes :)

  • @andrepallai3406

    @andrepallai3406

    Жыл бұрын

    They'll never know.. How are they gonna know??

  • @Goodellsam
    @GoodellsamАй бұрын

    You have to already have a flat surface to build a flat surface. Well,if I had a flat surface, I would not need another flat surface.

  • @BuildItMakeIt

    @BuildItMakeIt

    Ай бұрын

    You don't have to already have a flat surface. You can use two jointed boards and a laser level to get a flat surface. It is hard to do that though when making a giant torsion box of this size.