I assume you meant "to allow MAXIMUM solder wicking"

I'm sorry I can't find a reference, but I remember a study being done where the result was between 11-14 mils.
So, in the absence of any other responses (sorry for the delay) I would start with 11 mils as a minimum

(that might not help since I'm not including data, but maybe someone will clarify)

Jack

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On Thu, 17 Dec 2015 11:18:47 -0600, Dennis Saputelli <[log in to unmask]> wrote:

>assume a perfect friction fit between a round smooth pin and a plated hole each with +-0 tolerance
>
>how much allowance, minimum, should be given to allow minimum solder wicking vertically along the pin and down the barrel?
>just the annular amount for the solder itself in a perfect world
>
>i could not seem to find info on this, additional real world variables would be accounted and allowed for afterwards
>
>i realize there are solders and there are solders and probably soldering temperatures involved but just a starting point number would be interesting for the issue at hand
>thx