Home-grown diamond using CVD

I want to make a diamond at home using [chemical vapor deposition](https://en.wikipedia.org/wiki/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?




The easiest way to [grow diamond through chemical vapor deposition (CVD) is on a heated filament](http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.508.3476&rep=rep1&type=pdf), which just takes a few watts. 


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.


**N.B.** This is **not** a simple project one could do at home, since you'd need vacuum equipment, pressure regulators, high-pressure bottles\* of these *highly flammable* gases, and a vacuum-vessel which could implode. If you can get a knowledgeable instructor involved who has access to laboratory facilities and a thorough understanding of safety procedures, though, it's not impossible to accomplish. 


\* *One of the greatest dangers would be a gas bottle falling, taking off like a rocket and leaving explosive gas in its wake!*


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