LightBurn and a QR code

I’m making these and going to place them on the backs of the mirrors I’m making. I can burn it in the back of my wood projects but wanted something besides a sticker and something that would stand out to advertise what I do.

Practice one just had a phone number. Now that I know it works I’ll place some info with the phone number in the code. Lightburn has a QR code built in so it’s plug and play after you get the setting.

Dollar General has the wood block. 60 for something like $3. My settings turned out to be 800/27 interval .075 flood fill off. Made a small jig so I can just place one and go.

Just passing it on for those that may be looking for something like this.

What are the dimensions of the wood blocks?

20mmx18mm. For me that would be HxW with my Logo.