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Hi Matt
The pumps aren't that accurate and I wouldn't trust them to this expensive type work.
When I had the pumps I simply used them to dispense the resin into a mixing cup on the scales watching the scales and ignoring the number of pumps. It sure was neat and easy to mix really small batches accurately. Because they eventually screw up and they cost too much to keep replacing them I decided not to use them.
A little trick I learned while dribbeling the resin all over the place trying to pore out of a gallon can was this. Pore some resin into a clean cup and then pore this into your mixing cup very accurately. No mess, do the same with the hardener from another clean cup. Pore the resin you don't use back into its container. ( Make sure you don't get mixed up when you pore the unused materials back into its original container or your going to have problems.) To bad they didn't make a squeeze top you could screw on like a mustard container???
Hope this helps.
Fred
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