I don't have a. I DO however, have some bulk powders from NP that I use.
Here is what I came up with to cap it pretty fast (I use it to cap some CEE before the gym)
Here's what I used:
Large pusk/click pen
empty 00 caps
I removed the ink cylinder, and spring, leaving me with just the hollow pen casing, and the push button click thing , which now will move up and down about 2 inches inside the casing with no resistance.
Take a 00 cap and insert the smaller part of the cap upside down in the casing. (I did it for a while placing the larger portion of the cap, but I found that this way, I can pack noticably more into a cap, almost over-capn' it)
Insert the screwdriver or whatever you find that does the job of pressing (like a push pop :P) in the casing making sure not to make contact with the push button.
Simply press down into the powder and twist, in the container it came in, or use spoon and put some into a shot glass, or whatever you want depending on how much you want to cap)
This is basicly like the cookie cutter effect.
Now take the larger portion of the cap and manouver it into the top portion of the pen casing. The powder will begin to fill the empty cap once you apply a little preasure. Press it down a sfar as it will go (should be all the way down in there)and then begin to press the screwdriver against your hip or counter top. This will push the powder in the casing into the larger part of the cap.
The two peices come together, completely filled, and the pressing of the screwdriver will pop the cap out
It only takes a min to cap 4 before I workout.
This works well with most Ethyl ester's , or any other sup that has the consistancey of wet snow