ᐅ Making Alternative Back Panels for BILLY Shelving – Materials

Hello everyone,

I would like to make alternative back panels for my BILLY shelves myself, as the original back panels made of thin particleboard are, in my opinion, not stable or visually appealing enough for some projects. Therefore, I am looking for materials that are easy to cut, strong enough to reinforce the shelves, and as lightweight and easy to work with as possible.

Furthermore, I am interested in what to consider regarding thickness, surface treatment, and possible fastenings.

I would also like to know if anyone has experience with MDF, plywood (multiplex), or perhaps even plastic sheets or hardboard panels, and what the advantages and disadvantages of each option are.

In short:
Which materials are best suited for making back panels for BILLY shelves yourself? Tips on processing and sourcing are also welcome.

Thanks in advance for your expertise!

Hello pin69,

First of all, I think it’s important that you understand the purpose of the back panel: stabilizing the shelving unit, preventing deformation, and providing a neat visual finish.

Here is a brief overview of common materials you can use as a back panel:

1. MDF boards (Medium-Density Fiberboard):
- Advantage: Very smooth and easy to paint, stable
- Disadvantage: Not water-resistant, can swell if exposed to moisture
- Recommendation: At least 3 mm (0.1 inch) thick, preferably 4 mm (0.15 inch) for more stability

2. HDF boards (High-Density Fiberboard):
- Advantage: Very thin, hard, and still stable
- Disadvantage: More difficult to cut, more brittle than MDF

3. Plywood / Multiplex:
- Advantage: Very stable and robust
- Disadvantage: More expensive, rougher surface, usually requires additional finishing

4. Plastic panels (e.g., PVC):
- Advantage: Waterproof, easy to clean
- Disadvantage: Often less homely in appearance, sometimes harder to work with

Cutting tips:
- Use a fine-toothed saw blade for best results
- Smooth edges with sandpaper if needed

For fixing: small nails (panel pins) or screws with washers. Double-sided tape can also help with thinner panels but is less stable.

I hope this helps as a starting point! If you need more details, feel free to ask!

naujon schrieb:
I hope this helps you as a starting point!

Yes, that works. MDF 3–4 mm (1/8–5/32 inch) is a solid choice. I usually go for melamine-coated boards right away, which saves the effort of painting.

Plywood is too expensive and often oversized for backing panels. If you want it sturdier, use MDF and add a crossbar.

For assembly, small nails or screws are helpful. Glue is not very effective and often doesn’t hold permanently.

I find it fascinating how many options there are once you start exploring the topic a bit.

I made my own back panels from 4 mm (5/32 inch) MDF, first primed them, then painted them white. The result looks great and made the shelf noticeably more stable.

pin69 schrieb:
Which materials are best suited for making back panels for BILLY shelves yourself?

For me, both stability and appearance were important, so I decided against raw cut plywood panels.

For fastening, I use small nails and then fill the spots with wood filler, which I recommend if you want a clean finish.

Maybe try out a piece of MDF first before modifying a whole shelf—that helped me feel more confident.

I wish you good luck with your project and feel free to ask if you need more tips!