Here’s a pretty decent video on how to build a simple table using lumber and pipe. People are using pipe in a lot of DIY furniture products I think because it’s readily available at the big-box stores and is pretty easy to build with, yet still has the industrial look that is all the rage right now.
In my opinion the biggest downside of using threaded pipe from the stores is that you’re stuck with whatever dimensions and lengths they have on hand and if you’re trying to make something fit in a particular space, you may be out of luck if that space is an oddball dimension.
For example, what if you’re a young married couple who bought their first house that was built in the 1940’s and it had multiple additions done by someone who clearly had no idea what they were doing and not a damn thing in the house was square, level, or plumb and you spent more time trying to unf*ck what the previous owner did than you did making any actual improvements? And since nothing was square or level, what if any shelving you installed basically had to be custom fitted and some day you’re going to find the home inspector who was probably on the take and said the place was great and punch him square in the dick?
I mean “theoretically”.
Anyway, so what’s the solution? Use unthreaded pipe and socket weld fittings to build your project.
Here’s Jody from Welding Tips and Tricks building a chin up bar using unthreaded pipe and socket weld fittings. Though not quite as easy to use as threaded pipe, you have tons of flexibility and complete freedom to use whatever length of pipe you want. Also, these types of joints are incredibly strong. The only major downside is once it’s welded, it’s pretty much there forever so if you ever want to change it, it’s going to take some cutting.