I mean things like paper. Not concrete.
'laser pointers' generally are the small <5mW pointers you can get everywhere.
Burning lasers are in the 100-1000 mW range - they need focussing and are designed to put out that much power from the get-go.
www.dealextreme.com has a red burning 200mW laser for about 40 bucks.
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You Have to buy an exact Diode