What Digital paint weighing scale do you have or recommend?

What will you be mixing with it? Unless you are mixing base or SS formulas it will take some effort to convert volume into weight. Primers, and clears/single stages don't need to be that exact. Close by volume is close enough. Not trying to discourage you from doing that, just that it's not worth the effort IMO. If you do get one of those cheap scales, get a set of standards to check the scale with. In lieu of a set of standards you can use a nickel. It weighs 5 grams exactly.
 
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rgfast said:
In lieu of a set of standards you can use a nickel. It weighs 5 grams exactly.

WoW that brings back memories from the triple beam days LOL
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Lol. :D Yep a nickel is always what I used to calibrate the paint scales at the various places I've worked.
 
MJM said:
Looking to purchase a Digital weighing scale for paint mixing. Even though I would like to have a Saetoeius scale, I can't justify the cost for someone who doesn't need it for a living. Here's one that caught my eye.....

https://www.amazon.com/U-S-Solid-Electronic-Rectangular-Calibration/dp/B09WZWK2VJ/ref=sr_1_12_sspa?adgrpid=1345802804027230&hvadid=84112913783750&hvbmt=bp&hvdev=c&hvlocphy=86027&hvnetw=o&hvqmt=p&hvtargid=kwd-84113034089990:loc-190&hydadcr=22799_13493103&keywords=sartorius+scale&qid=1668232082&sr=8-12-spons&smid=A20QEF2LEKCK8G&th=1

Any and all recommendations welcome.

Thank you,
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The consistency you will get by using a scale is well worth it. You will know that from batch to batch of whatever you mix, it will be the exactly the same. I only use the Production clear, and I always mix it 4-1 by weight and my hardener gets empty the same time as my clear, so I know I'm hitting the 4-1 by volume. The 2K primer I weigh it out at 3-1, and that works out very close to the 4-1 volume. But more importantly it is exactly the same each time.

If you have the time, just watch facebook or craigslist and from time to time a high-end scale will come up dirt cheap.
 
AAE said:
Mixing base. I don't need to mix a lot. Ohaus is a really good brand.
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That is where it would be handy in mixing very small amounts. Doing the math in my head 200g would be about a max of 4 or 5 ounces of base right?
 
RenewAP said:
The consistency you will get by using a scale is well worth it. You will know that from batch to batch of whatever you mix, it will be the exactly the same. I only use the Production clear, and I always mix it 4-1 by weight and my hardener gets empty the same time as my clear, so I know I'm hitting the 4-1 by volume. The 2K primer I weigh it out at 3-1, and that works out very close to the 4-1 volume. But more importantly it is exactly the same each time.

If you have the time, just watch facebook or craigslist and from time to time a high-end scale will come up dirt cheap.
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So you are saying the weight of 1oz (for example) of the clear and the activator is the same? That's what 4:1 implies. What about a different activator? The different speed activators don't weigh the same. If it's "close enough" then that defeats the purpose of using a scale.
 
16 ounces in a pound...so if I add 20 pounds of air to the tires on my truck...I suppose it will weigh 80 more pounds? Ounces of liquid don't equal ounces of weight. Every paint product has a different specific gravity. Mixing paint as with a mixing bank is different than mixing primer or clear coat. I think the OP is really not planning to get into mixing paint from scratch. I may be wrong...and that won't be the first time.
 
crashtech said:
Mod note: The information that Production Clear can be mixed 4:1 by weight has not been verified. SPI does not release mix-by-weight information, and anyone who mixes by weight does so at their own risk.
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I will do the math Monday when I have access to all the info.
I have never checked the 2100 series even to guess if this is true, but a footnote here is each activator speed, say fast to med or slow will weigh differently.
 
Barry, this may be a dumb question but if two full gallon containers weigh the same to begin with, then wouldn't it hold true that smaller equal amounts would also weigh the same?
 
Yes, but when formulating a clear and activator, it's all oh/nco, and the net result of the product's weight is a net result only.
If there are four activators for a clear, the isos are all the same in each, BUT the only difference is the solvent and that will change the weight of that activator.
If what he says is true, it is lottery-winning odds, and I take no credit.
He may be correct, but I will check Monday as I have never checked the 2100 series as far as weights.
 
I just did the math with only the 2102 activator and remember different speed activators weigh differently.
To a gallon, the ratio is 57 grams off.
Im against this but its in the margin of error
Where no harm is done and probably as good as most mixing cups as the good ones seem to have a 1 to 3% error rate.

Again im against this, but if you trust your mixing cup, you can figure this way.
0 out the cup and pour clear in, and measure the net grams. Zero out and pour the activator in and measure grams.
 
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