[Elsie]

If you know where to drill the hole!

[Sacajaweau]

The older ones you had to drill a hole. But on the newer ones, they're already there under the label.

I think many folks use a laser printer. Those I learned to fill also. You buy a container of the black stuff...and there's a plug to remove and replace. You pour in the stuff. Easy as pie.

[Sacajaweau]

I get my stuff from Printer Filling Station.