Machining Epoxy Granite

Effect of frame on machine performance.

Machining epoxy granite.

The epoxy granite mixture being used is 30 granite gravel 30 joint sand 30 fine quartz sand. The sizes are chosen to make the most possible dense gravel mixture. It s broken into 4 parts. Epoxy granite is your best bet but what epoxy granite is the best.

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. That machine is solid. 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. This saves expensive epoxy and it makes the machine heavier and more stable.

Epoxy granite fills are fascinating. I did a fill on my original rf 45 cnc mill and it noticeably improved the performance. Stiffness and damping are important to cnc work. Building a solid base for machinery can be a daunting task.

I few details i gleaned from one of the articles on the german site you have to register. Epoxy granite filling a mill for vibration dampening and rigidity. The only machines use. German epoxy granite milling machine here s an awesome project i recently heard about on cnczone.

If the machine frame bends too much when cutting forces are applied. The epoxy granite is a mixture with epoxy and gravel filler with different grain sizes. One important thing is to make sure that the mold lies flat on a reference surface. Hardinge as well as many of these others are quick to point out.

Mostly time laps recording of the build process of a little epoxy granite router. It can be cast into almost any shape is incredible stiff and dampens vib. This is a full tutorial on how to achieve fantastic results. Read all about how to do it in my article on epoxy granite fills.

All done in my garage with a very basic set of tools.