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Thanks for responding everyone. @ Joe Mo - We are planning to use a system to move the laser back and forth. It is going to be a cartesian system controlled by 2 stepper motors. And yes, we plan to toast the bread before etching it. The laser is just there to make the image. You mentioned...

You mentioned that a 1W 445nm laser could burn toast. What do you estimate the time it would take to toast that image of Erik Estrada mentioned above? What do you think is the minimum CO2 laser that would burn toast and the cost of it? And I have no intentions of selling toast on ebay...

Well I am trying to build my own toaster device/laser cutter. I am an engineering student looking into the feasibility of this project, although I am on a budget. If anyone in the SF bayarea is willing to lend a laser for a few months, that would be appreciated! @ Tech_Junkie: Is that sarcasm...

Hi guys, This is my first post. I'm researching the feasibility of building my own laser engraver to make an image onto toast. What I found out so far is that since toast is an organic material, we need to have a blue or violet laser for it to be able to absorb the light. What I am confused...