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Discussion Starter #1
Good morning!
My paint calls for a 4:1 mix ratio. If I want to do a quart at a time (32oz), I would add 8oz of activator,correct?
 

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Yes. Although I ran out of fingers and toes getting to 32. ;) You can do any quantity using the ratio that is 5 parts (4 parts + 1 part = 5 parts).

So, if you only need 20 ounces of mixed paint, divide by 5 (20/5=4). Now multiply that by your ratio 4x4=16 oz paint, and 4x1=4 oz hardener, for a total of 20 oz mixed paint. This works much better if your gun cup is smaller than a mixed quart, or you only need that much to do a certain panel.

You can also use it just to verify your math, so here it is for your 32 oz and 8 hardener at 4:1 ratio:
32+8=40
40/5=8
8x4=32 paint
8x1=8 hardener

I prefer using weight and a postal scale. Most manufacturers have alternative weight ratios, so I can mix any quantity I want right in the mixing cup with no measuring - just weighing as it goes in.

David
 

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Discussion Starter #3
Got it! Yeah, i have the 20 oz. cups for my HVLP, so the smaller batch will help a lot.
Thanks!
 
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