Which machine for headstones - please help.

[Boyan Silyavski]

Boyan if you are talking about the 3Kw router type spindles then they will not handle engraving Granite or Marble with industrial-grade PCD tooling. Typical RPM is between 6000-8000rpm and these spindles don't have enough low down torque. Also, they cannot handle the loads for any lengthy periods.
I built my friend a machine just for cutting the draining boards, we used one of these and killed it within 3 months. They will work ok for the occasional jobs but no good for 10hr days week in week out.

I agree, GDZ on their 5kw GDZ125-18Z/5.5 spindles say bearings for half year, other parts for one year
. Which i see as a perfect engraving spindle for DIY projects. They come with 2*7007C P4
2*7005C P4 bearings.

So spindle is consumable, at 500$. One pays it off on a couple of jobs and then when broken, bearings are to be changed. bearings are at around 100$ the pair, so
its quite doable and i see it as an solution.


Again, not for cutting, just for shallow jobs. I kniow what you are saying, i have the diamond bits but still have not done that on mine machine, not that it wil not do it, but dont want to loose precision or hack the bearings. But if a job that pays well comes, i will do it.


What i am saying it is a viable solution to start the business and make money. A mill head could be used also , but i dont see the point.