Quote:Does it matter for my purposes whether or not the specs for the substitute caps are the same as what the plans here call for? For example 500v vs. 450v?
Substituting a higher voltage rated part for a lower one is fine.
The higher rated parts will usually cost a little more and be larger in general but most of the time you cannot get the exact spec that someone calls out.
Substituting a different capacitance VALUE can have a negative effect based on where in the circuit the cap is located.
The one you mentioned I believe is in the power supply filter so higher voltage and equal to or greater than the capacitance will be just fine.
That dual part I pointed out would work great in this application because you need two of them according to the ZKIT1 schematic. Would save you some space.
My builds are a lot of trial and error fitting parts because I'm not much of a mechanical guy. Can't cut a square corner, etc. :)
My advice is like most, dry fit many times before committing the blade.