How to build a shelf?

Flanges. That is what holds them in place. See if this is what you are looking for?

https://youtu.be/GGKX3iIHK9c

https://youtu.be/YCmNwQAO8HQ

https://www.simplifiedbuilding.com/projects/59-diy-shelf-ideas-built-with-industrial-pipe

Do you have a picture of the type of shelf you want to build? I am having trouble picturing it.

Very common Bad idea:

I. Firstly: ever the pipe breaks, it ruins your stuff.

II. Secondly, shelf weight concentrated on the pipes more prone to breakage, [see I]

III. Most people who so do, regret this later because heat from the pipes dries out the wood.

However, if you must...

You always Mount any shelf to the studs in the wall, at least Two Studs.

Hence why most shelves have the bottom-most shelf 1 inch from from the base: that is where the Bottom screws go.

If you want pipes going through the shelf, [rather than shelf going through the pipes] cut the holes for the pipes first with the hole saw, and then the rest of the U shapes out appropriately with a coping saw, then glue the top of the U back onto the back of the shelf after you mount the shelf onto the studs and place each pipe in the U.

Pros:

This does not place any added stress on those pipes, and allows the pipes to expand with heat in the winter.

If you properly cut your two U in a manner of a simple jointing, where: they fit in a V-joint only one way, you need not permanently glue those but instead insert them into the V, so that it is easier to take off the shelf per necessity per cleansing or painting.

Cons:

None

Here I found 109 diy shelves projects, may be these DIY Shelves can help you in this.

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