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General Mach Discussion / Re: Making a laser cutter
« on: April 23, 2010, 06:11:12 AM »
Hi Furkan,
After a bit of experimentation I really do not see that making PCB’s with a laser is even a remote possibility (but perhaps someone may prove me wrong).
There are a number of reasons, that I can see, why this is not a practical proposition:–
1) Copper is such a good conductor of heat that a lot of energy would be dissipated either side of the intended kerf .
2) Copper is also probably the best reflector you can get for energy at 10600nm. (CO2 laser).
3) Because the laser beam is focused to a point the size of a pin prick the isolation kerf produced would hardly be wide enough to be of any practical use.
4) Assuming there was enough available laser power then once it penetrated the copper layer it would then still have sufficient energy to cut right through the GRP board as well.
It was a good thought though.
Tweakie.
After a bit of experimentation I really do not see that making PCB’s with a laser is even a remote possibility (but perhaps someone may prove me wrong).
There are a number of reasons, that I can see, why this is not a practical proposition:–
1) Copper is such a good conductor of heat that a lot of energy would be dissipated either side of the intended kerf .
2) Copper is also probably the best reflector you can get for energy at 10600nm. (CO2 laser).
3) Because the laser beam is focused to a point the size of a pin prick the isolation kerf produced would hardly be wide enough to be of any practical use.
4) Assuming there was enough available laser power then once it penetrated the copper layer it would then still have sufficient energy to cut right through the GRP board as well.
It was a good thought though.
Tweakie.
