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Old 30 March 2018, 23:19   #1
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Glue dispenser?

Has anyone found a hand pump or other cost effective system to get the 10:1 ratio for 2 part glues? I usually just pour it in a mixing cup, but there is usually waste and I feel like It could be more accurate. I thought about trying pumps for fiberglass resin but im not sure how well that will work since glue is a bit thicker and will probably gum up the nozzle quickly. I buy glue by the gallon, so im obviously not mixing it all at once.

Thanks!
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Old 30 March 2018, 23:59   #2
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Quote:
Originally Posted by gbftats View Post
Has anyone found a hand pump or other cost effective system to get the 10:1 ratio for 2 part glues? I usually just pour it in a mixing cup, but there is usually waste and I feel like It could be more accurate. I thought about trying pumps for fiberglass resin but im not sure how well that will work since glue is a bit thicker and will probably gum up the nozzle quickly. I buy glue by the gallon, so im obviously not mixing it all at once.

Thanks!
Hand mix is the industry standard.

Reactant ratio isn't too precise. Anywhere from 5 to 15% will work. I use pipettes to measure it, because isocyanate reactant is extremely expensive. About $500 / liter.
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Old 31 March 2018, 09:12   #3
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I use various paints & fillers for car body repair & weigh to mix which does give a very precise mix - important with the colour basecoats to avoid slight variations in shade/effect.

I usually have a bit left over but if you try & get the total quantity for the job absolutely exact Murphy's Law says that you will have mixed up just a bit too little & it's then a rush to get more mixed & with fast curing products that may be a problem.
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Old 31 March 2018, 09:16   #4
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We use graduated paint mixing cups and pipettes, i dont see how a dispensing pump would be less wasteful.
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