I won't be making mine for a few days, I wish I could. I did get the 10 and 20ml syringe. The one thing I noticed is with the 10ml syringe the rubber hole in the back of the plunger is to small to put you old carto in it to punch the hole. So I quess you will need to be careful to get it centered, so the hole is not off center, or cockeyed. The 20ml plunger will let the old carto slid right in so the punched hole will be centered, just like the original poster (DAVID) said to do. I wonder what would work best on the 10ml plunger, punch it it with the cone facing up,or put the cone side facing down when you punch it??