Epoxy granite or mineral casting

[Peter.]

I love it when practical experience makes a mockery of the theorists

[Jonathan]

I love it when practical experience makes a mockery of the theorists

It's a case of different objectives - I think what the 'theorists' are mainly discussing is a more demanding application than what mike has found out about.
I think the difference is that in the long thread on CNCzone they are (or were) trying to find a resin/aggregate mixture that would when set leave a surface smooth, accurate and stable enough to mount the linear rails directly to it, hence the suggestion of using a flame to remove bubbles. However if you're just making a base or frame with it and embed steel strips, or other means, to mount the rails, that can subsequently be machined or adjusted to obtain the required accuracy then you can get away with all sorts of things. There are quite a few examples of where people have not used fancy resin etc on their machine and got good results, such as this one.

[JAZZCNC]

It's a case of different objectives - I think what the 'theorists' are mainly discussing is a more demanding application than what mike has found out about.

C'mon Don't get much more demanding or accurate than CMM's thou does it.?. . . . Most of that thread is over complicated Bullshit.

[Ger21]

. . . Most of that thread is over complicated Bullshit.

I agree with that 100%. My gut feeling says a bag of sand and a bag of gravel is all you need to make an incredibly strong machine base.

[audioandy]

I agree with that 100%. My gut feeling says a bag of sand and a bag of gravel is all you need to make an incredibly strong machine base.

Someone agreeing with Jazz! That's a first!