Let the fun begin !!! ???

[JAZZCNC]

i will surely find the sweet velocity and acceleration values when machining different materials. cheers for that.

Don't be in a rush to go too fast regards Velocity. Overtuning the motors is very easy and will result in lost steps and positional error if over done.
Also it doesn't always make for faster cycle times depending on type of work your doing.

Keep in mind you can't have both High velocity and high Acceleration.
The best setup is having a nice balance of both for general cutting. ie: Larger work, profiling etc.
Then make your self a separate profile for jobs such as 3D or fine detailed work and tune the motors more biased towards acceleration and lowering velocity. This will shorten your cycle times as often these type of jobs make lots of small moves where they very rarely reach the actual commanded feedrate before having to slowdown again for direction change. Having the acceleration higher and sacrificing velocity allows you to reach a higher feed that is closer to the commanded feed. On some jobs like 3D work and engraving that can have hundreds thousands lines of code this can dramiticly reduce cycle times.

Slowly creep up on the motor tuning rather than try to sprint from the start and only adjust one setting at a time then test by runnign some G-code not just jogging. ie Only adjust velocity or acceleration never both together.