New Memeber and very new to CNC

[Fred]

Another thing to try is to raise the bit about 10mm above your PCB and set that to zero. Then do a dry run (also known as "cutting air") and make sure the tool path and speed looks as you were expecting. One thing to check is that non cutting moves are a few mm above the PCB, not at zero.

[jamhot]

Another thing to try is to raise the bit about 10mm above your PCB and set that to zero. Then do a dry run (also known as "cutting air") and make sure the tool path and speed looks as you were expecting. One thing to check is that non cutting moves are a few mm above the PCB, not at zero.

Hi Fred,
Ok sound interesting. So does that mean whatever software you use to run the *.nc file, the coordinates are offset from/to this? Would this be a rule of thumb procedure before each job?

Thanks

[Clive S]

Hi Fred,
Ok sound interesting. So does that mean whatever software you use to run the *.nc file, the coordinates are offset from/to this? Would this be a rule of thumb procedure before each job?

Thanks

Before you start wrecking your machine have a good read through this :-
http://www.cnccookbook.com/CCDIYCNCBeginners.html

It will help you understand what you are trying to achieve

[jamhot]

Brill - thanks Clive. I'll have a good read.

[JAZZCNC]

To save your bed and table like metioned always cut air but if you want to see the actual cut then buy some thick insulation Foam and cut that first. This way gives enough time to react without damaging tool if goes wrong.

[jamhot]

To save your bed and table like metioned always cut air but if you want to see the actual cut then buy some thick insulation Foam and cut that first. This way gives enough time to react without damaging tool if goes wrong.

Yeah good thinking - I thnk I need to get some blocks of wood or smilair material to test on (and use as a safty bed)! Thanks.

[JAZZCNC]

Yeah good thinking - I thnk I need to get some blocks of wood or smilair material to test on (and use as a safty bed)! Thanks.

wood will stick break tools soft but firm material is what you want.