@Roger:
Yep, all things considered.Then have a look in the epoxy-granite stream here at CNCZ and see how they talk about weight and stiffness.My goodness ... I just took a look at a couple of the granite mill threads I could find here at cnczone. And I have to admit that it humbles me ... probably better early than later and now more a feeling or "state" than acknowledged and work-able in thoughts and thinking. However, one thought that comes up is if it would be a good solution to include some kind of epoxy/granite into a design. E.g. a "constrained layer" assembly of maybe a steel/aluminum plate and then a cast epoxy granite plate ... I reckon it would really reduce the vibrations of the mill (of course depending on how it is done), right?Milling any metal is worlds different from routing wood and engraving PCBs. For a mill, weight and stiffness are king.
@Craig: Thank you once more for elaborating and explaining. You are really, really saving me a lot of time and likely suboptimal choices! Thanks, Craig ... One question to your post above: When you mention the ground screws you bought I get the impression that those were not bought from dy-global. If this is the case do you then have a suggestion for a good vendor of ball screws?
I will draw up a crude sketch of a CNC machine today and post it later in the day. Am somewhat inspired by the bed mill type but will see if I (with my current knowledge ) can make it work out ...
@C-O-D: I never got to give you a feedback on this comment of yours earlier in the thread, but here it is:
I think you are right, however, as it is I already have a 90w weller soldering iron, a heatbed, and a 700w desoldering station. Hope it is enough - and an additional benefit to giving heat to thick PCBs may be that I may also otherwise appreciate the extra heat now that autumn and winter is approaching here in DenmarkWell, I can tell you the first thing that would happen: you will buy a preheater and the most powerful soldering iron you can find.
Cheers to you all,
Jesper