How to make an rf choke and tx rx coils?
Most wireless chargers generate a magnetic field that is picked up by the portable/mobile device and converted to electricity. They use resonant coils to increase power throughput and the coils are tuned with a capacitor to make them resonant.

If you have an operating frequency of 14MHz and a coil of 8.6uH, to tune it requires a capacitance of 15.027pF and this gives you a resonant frequency of 14.001 MHz. Here's what a resonant peak would look like from an inductor and capacitor (this particular one resonates at 1500 Hz but it is no different, in principle to any other pairing of L and C): -


(source: arachnoid.com)  



If capacitance OR inductance increased 2% the resultant frequency would be changed by about 1% i.e. accuracy is important but maybe not as significant as you might think. 

The Q of one of these resonant coils might be as high as 20 and this informs you that if the resonant frequency is 14MHz, the 3dB bandwidth is one-twentieth of this i.e. about 700kHz. This means that the power transferred at 14MHz +/-350kHz will be 3dB down.

"3dB down" isn't exactly a big problem for this type of product - if the resonant coil has drifted off by 350kHz then the charging power received by your portable might have halved.

A change in 350kHz in 14MHz is 2.5% and this will be like either the inductor or capacitor drifting off by 5%. 

What I'm trying to say is that getting a coil's inductance correct to 3 decimal places is missing the point. Also, you will likely modify the tuning with small value capacitors to get it spot on 14MHz.

My advice is this. You might have a certain area in which to make a coil - it might be 6 inches diameter for instance - try winding 3 turns and putting 22pF across it and seeing where it resonates. This can be done with a signal generator and o-scope. If you don't have any test equipment then you are in the dark I'm afraid to say.