Re: Concrete VMC
Originally Posted by
jackjr-123
Why should we care about the flexural/tensile strength in a machine tool?
The strength (UTS) will allow it to hold fasteners/inserts better, and allows for less material used for the same strength.
Originally Posted by
jackjr-123
I also don't understand why you suggest making hollow sections. The 10kg saved won't change anything except making the mold more complex.
10kg? and the rest! One liter of concrete volume will weigh approx 5kg. I am not saying to make hollow sections. I am just saying that maybe it doesn't need to be a huge monolithic block of material. A 50mm thick slab & sides with cross webs is not "hollow sections". The higher strength of the epoxy conc allows for less material. And I am saying that looking at old cast iron constructed machine bases and/or other polymer concrete constructed machine bases may give further insights.
Jonathon Clarke
www.solpont.com