Machining Epoxy Granite

Filling the machine castings with epoxy granite with epoxy granite sometimes also called polymer concrete has been a time honored tradition of some of the finest machine tool manufacturers such as hardinge with their proprietary harcrete and others.

Machining epoxy granite.

It can be cast into almost any shape is incredible stiff and dampens vib. Read all about how to do it in my article on epoxy granite fills. Epoxy granite is your best bet but what epoxy granite is the best. Epoxy granite makes an amazing machine base but there is a bit of work that goes into it.

If the machine frame bends too much when cutting forces are applied. I few details i gleaned from one of the articles on the german site you have to register. German epoxy granite milling machine here s an awesome project i recently heard about on cnczone. One important thing is to make sure that the mold lies flat on a reference surface.

That s the question adam bender answered in a series of experiments that resulted in a great looking cnc machine. That machine is solid. One of the biggest advantages of epoxy granite is that you can cast against a precision surface plate or apply an extremely expensive self leveling epoxy to achieve surfaces that are flat and. Mostly time laps recording of the build process of a little epoxy granite router.

This is a full tutorial on how to achieve fantastic results. The only machines use. The sizes are chosen to make the most possible dense gravel mixture. Stiffness and damping are important to cnc work.

All done in my garage with a very basic set of tools. This saves expensive epoxy and it makes the machine heavier and more stable. It s broken into 4 parts. Epoxy granite fills are fascinating.

Hardinge as well as many of these others are quick to point out. Effect of frame on machine performance. Epoxy granite filling a mill for vibration dampening and rigidity. I did a fill on my original rf 45 cnc mill and it noticeably improved the performance.

The epoxy granite mixture being used is 30 granite gravel 30 joint sand 30 fine quartz sand.