Laser cutting bed

What is the best thing to put under a workpiece when cutting through to avoid burning whatever it is that the Neje is sitting on?

It’s called a “spoilboard”. You can either google it and buy one, or you can make one which is what I recommend.

You get a piece of wood, 1/2 thick or more that’s larger or smaller than your bed or overall dimensions depending on what you are doing.

You can then draw lines and measurements so it’s easy to place your pieces on it for cutting.

It depends on what you want to do. Or just put a piece of wood that’s larger than the overall size of the laser underneath it.

I made mine larger than the laser, put measurements and a grid on it and used it that way.