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Need help for 3mm thick Aluminium Cutting

Need help for 3mm thick Aluminium Cutting

(OP)
Hi Friends..
Hope all have a nice day..
I have Amada 3015NT 4KW Laser machine, I try to cut 3 mm thick Aluminium with air, but i found some hard burrs and some time it reflect.
Please suggest me for reduce burrs..

RE: Need help for 3mm thick Aluminium Cutting

If you have the option to use nitrogen I would. Use a 3.0 nozzle with 8 to 9kg for gas pressure .02 nozzle gap and a focus of -.080 start with 130 ipm.

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