You need to look for, the butane cans that have the little assorted
nozzles inside the cap or moulded as part of the cap. It will
announce on the can label that they will fit all nozzles. someplace
that sells smoking stuff generally has this type of can.Take them
and dry fit them to the torch for fit. The torches and cans are not
going to give a real tight fit most times.To fill hold the can with
the nozzle up right on a table/bench, with the adapter in place.
Bring the torch down the torch fill port down on the nozzle. Press
and hold down will filling. you may have to crack the valve while
filling on occasion if the charge doesn't last, to purge the torch
fuel cell. Also you can turn everything upside down and fill the
torch with liquid gas. It will get cold, and most of them do leak to
some extant. I have had a number of them over the years and have
found they don't provide the best return time/use wise. The larger
butane torch about 5 inches tall and self standing works better.
harborfreight.com Item number: 42099
Is a picture of an example of the torches. Harbor frights site is a
great source for info,pictures and tools. If you are so inclined.
They also list the other types of pencil torches and you can down
load the product manuals for most of the items on the site so you
can read the recommended instructions.
The usual disclaimers, legalize apply and the standard safety
warnings when dealing with torches and pressurized cans of fuel.
Been there, still doing that but use a glove if they leak to bad!