# Home-grown diamond using CVD

I want to make a diamond at home using chemical vapor deposition (CVD).

1. If I use a metal chamber filled with methane and hydrogen gas and heated with a microwave oven oscillator element, will the gas explode?

2. What is the ratio of methane and hydrogen for the diamond to be able grow?

• You can't do that at home. Think of something more realistic, like a nuclear reactor. – Ivan Neretin May 4 '19 at 12:55

You'd need a low-pressure chamber (~30 torr, or ~0.04 atm) with gas-tight fittings for electricity, feed-gas of ~1% $$\ce{CH4}$$ and ~99% $$\ce{H2}$$ and $$\ce{Cu}$$, $$\ce{Ti}$$, $$\ce{W}$$ or $$\ce{Ta}$$ filaments. Since this is a flow-though reactor, you'll also need to dispose of the flammable feed-gas without letting it accumulate near the vacuum pump.