What material should I use for the backing on my breadboard?

[primegaps]

Hello!
I'm starting to get into electronics, and I have just received 3 breadboards that I will begin to mess around with.
I saw a breadboard for sale similar to the one in the picture, and I liked the idea of it.
I have quite a few power supplies at home, so I would like to be able to plug into my breadboard setup directly with banana cables, just like the picture. I have three 830 tie point breadboards, and I would like to mount them all onto a common backing and secure on some of my own banana connectors to emulate the board i show in the picture.

What would be the best material to serve as the backing for such an application?
I first considered delrin because I love the feel of it in other applications, but I'm reading now maybe it is not the best thing for me to use. Please let me know if you have any suggestions for me!

Thank you.

[tpowell1830]

This falls into the category of subjectivity. It will really come down to what you prefer and how much do you want to spend. The idea of aluminum is good, between 4.5 to 6 mm thickness and get it anodized or alodyned to knock down the conductivity factor. Delrin is a good choice as well, what is the reason that you think it is not? You could even use plywood or MDF and if you want to be fancy get a butcher block that is glued together in a checkerboard pattern. Staying along the line of plastic, acetal. You could even use steel, but recommend that you epoxy paint it to alleviate conductivity.

Keep in mind the structural characteristics, i.e. wood needs to be thicker than other materials and metal can be thinner. Wood is an insulator and metal is a conductor, treat them as such.

[crazyguy]

I use Acrylic Sheet for backing

[Ian.M]

A metal backing provides screening, but a wood backing is convenient for temporary mounting of brackets to support controls, speakers, displays or other chassis-mount components. 

Don't worry about the conductivity of a metal backing - just cover it with Fablon for added insulation.  If you do go metal (or stick copper foil on plastic or wood), one terminal, marked 'Ground' should connect direct to it, and ideally, you should provide extra connection points to it just off the edge of the breadboard at either end of each bus strip so that you can get a better ground connection to it, but unless you use copper foil (or PCB) that you can solder individual wire sockets (salvaged from a turned pin DIL socket), into, that can be difficult to do.