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For the dust-in-computer problem, you could consider placing the entire computer in a big, fully sealed metal casing. The fans of the computer distribute the heat evenly in the inside of the casing....

I would like to build an enclosure for my CNC mill. I'm planning on laminating these layers together with epoxy resin:

- inner most layer: glass, so the flood coolant will not have access to the...

I'm looking at iron powder. It can be bought with a grain size of 315um [1] or for a small premium, it can be bought with a grain size of 200um [2]. I guess the smallest grain size yield the stiffest...

How did it go? I am planning to do the same thing, using a granite kitchen counter top as a poor man surface plate.

Agreed. This guy [1] came to the conclusion 66% sand and 33% dust makes the most stiff bar. Moving to 33% stones, 33%sand and 33% dust yielded the same results.

[1] Epoxy granite stiffness - test...

I saw a guy [1] who tested a bunch of different epoxy-granite recipes, and compared the deflection against a piece of pure epoxy.

My takeaway is that fine particles dramatically improves the...

Hi All,

I was given a low-cost surface plate (a granite kitchen countertop). I'm planning on using this flat surface at the bottom of the mold. I will screw linear rails to the resulting...

Could you elaborate on how heating a little will improve strength? How much improvement in stiffness can I expect? What temperature do you mean? Is 50^C too much?

Hi All,

I would like to make an epoxy granite beam that holds a linear rail. I am planning to use this recipe, found here[1]
He speaks about 67% sand, 33% dust, 14% epoxy. In my mind this...