How can I sub for a .05 cap?

[sevenisthenumber]

What are some options for making some other caps work for a.05 metal film?

[svstee]

Not totally sure what you are asking, but two .1 uf caps in series or two .022 uf caps in parallel will both be close enough.

[frequencycentral]

0.047 is close enough and a 'regular' value.

[kurtlives]

47nF is just fine

[sevenisthenumber]

its for an output wah buffer input cap.

[svstee]

Do you have a .047 uf cap (same as 47 nf)? If so, use that. If not,

two .1 uf caps in series or two .022 uf caps in parallel will both be close enough.

[brett]

Hi
all caps have a fairly wide tolerance.
Tolerance is the odd work that manufacturers use to describe their inability to make capacitors with exact values.  I suppose it relates to the consumer's and circuit's tolerance to take inexact values.
Anyway, even high quality MKT film caps have a tolerance of 5 or 10%.  So 0.05 uF plus or minus 10% is a range from 0.045 to 0.055 uF.  With older caps and and electrolytic caps the tolerance can be much more than 10%  (e.g. -20% +80% for many electrolytic caps).
Most people design circuits with this in mind, and don't expect tight tolerances.  For example, you'll almost always see film caps specified for filters in the audio range, as an electrolytic cap at the high end of its tolerance might cause the cut-off frequency to be almost an octave (+80%) too high.
cheers