Machining Epoxy Granite

If the machine frame bends too much when cutting forces are applied.

Machining epoxy granite.

That s the question adam bender answered in a series of experiments that resulted in a great looking cnc machine. Epoxy granite is your best bet but what epoxy granite is the best. German epoxy granite milling machine here s an awesome project i recently heard about on cnczone. Mostly time laps recording of the build process of a little epoxy granite router.

The epoxy granite is a mixture with epoxy and gravel filler with different grain sizes. Hardinge as well as many of these others are quick to point out. The sizes are chosen to make the most possible dense gravel mixture. The only machines use.

This is a full tutorial on how to achieve fantastic results. Epoxy granite fills are fascinating. The epoxy granite mixture being used is 30 granite gravel 30 joint sand 30 fine quartz sand. This saves expensive epoxy and it makes the machine heavier and more stable.

Read all about how to do it in my article on epoxy granite fills. Epoxy granite makes an amazing machine base but there is a bit of work that goes into it. It s broken into 4 parts. It can be cast into almost any shape is incredible stiff and dampens vib.

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. Epoxy granite sometimes known as polymer concrete makes an amazing machine base. One important thing is to make sure that the mold lies flat on a reference surface. That machine is solid.

All done in my garage with a very basic set of tools. Effect of frame on machine performance. Epoxy granite filling a mill for vibration dampening and rigidity. Stiffness and damping are important to cnc work.

I few details i gleaned from one of the articles on the german site you have to register.