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Mixing ratios


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Old 05-18-2008, 04:32 PM   #1
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Mixing ratios:

This is to help clear up a common misconception about mixing ratios which can lead to disastrous results. Normally, the ratio is given in a format like this-- 2:1:1,which translates as 2 parts paint,1 part hardener,1 part
reducer. NORMALLY hardener(hardener and activator are the same thing) is
listed before the reducer but you must verify that by reading the tech sheets. That way is self explanatory, it's when the ratio is given as a percentage that the confusion sets in.

A 50% reduction does not mean half and half ,that would be 100%(1:1) reduction,50% translates to 2:1,the percentage is a percentage of one part,NOT a percentage of the contents.If the ratio is given as 100% paint, 50% hardener, 25% reducer then that translates as 4:2:1,i.e. 4 parts paint,2 parts hardener,1 part reducer

Mixing ratios are very important and should not be ''eyeballed",i strongly
suggest using a clear mixing cup with the ratios already marked on the cup.



In a pinch you can use a straight sided can with a flat bottom and make a stick to get your ratios.

example:

take a wooden paint stick and a tape measure, now mark off 1/2 inch
increments. Now number each space as such:



now if you have a ratio given as 4:1:1 then you will pour paint to the line above the 4,you will add activator to the line above the 5 and reducer to the line above the 6.

Remember, you should always wear a respirator when mixing the paint or primer as the chemical reaction of blending the components is more dangerous than the mixed component you are spraying.

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Old 06-09-2008, 03:12 PM   #2
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also if you go to your local paint store they sell mixing sticks with the ratios for certain products on them if you dont fell like making your own

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Old 06-09-2008, 06:26 PM   #3
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the paint store GIVES me mine

it was a worse case scenario........i'll grab a universal mixing stick and take a pic for you

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Old 07-03-2008, 02:39 PM   #4
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does that also go for clear?

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Old 07-03-2008, 02:57 PM   #5
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what do you mean?

a ratio is a ratio is a ratio...it does not matter if it is primer or clear....

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Old 07-03-2008, 04:14 PM   #6
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thanks for clearing some stuff up for us toad!

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Old 07-03-2008, 04:37 PM   #7
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ok...as promised......

this is a universal mixing stick.....in an ideal situation,it should only be used in a flat bottomed,straight sided can.....

''why?" you may ask....

because a mixing cup is tapered,no matter how small the taper,obviously the higher you get in the container,the more material it can hold relative to the mark on the stick.......

now this may not lead to failure(but it is possible)....it will eat up your material which,equals dollars.....

if you use a mixing cup you can see that they are not 100% calibrated to the taper or curvature of the bottom......

anyway.....ideally,use a stick like this and a flat bottomed,straight sided can









and a fun pic



i'm working on spray outs for a harley......pics will be in a different thread later............

yes matt,that is a single action,external mix paasche

edit:sorry for the blurry pics.....

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Old 07-03-2008, 04:38 PM   #8
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we all paintoad

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Old 07-03-2008, 07:38 PM   #9
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thats what i need to know 2:1:1 goes for everything.

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Old 07-03-2008, 08:36 PM   #10
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not for me.....ppg and shopline have all different ratios....

always keep up to date with tech sheets for whatever you use.....ppg has thrown out some curve balls on me in past.....STAY INFORMED!

example:

my protege' came to me yesterday with a problem.....my jobber gave his shop an incompatible clear for his basecoat even though they were the same brand,they could not be used together......he got a compatible clearcoat(which was listed on the tech sheet although no one cared to read it) and had no problems....

so,even though a paint store sells the shit everyday,they don't use it and only rely on you(me) the painter for real world feedback to pass on to others.....

your best defense is to stay informed and give feedback to your jobber.....


AND READ THE TECH SHEETS...lol

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Old 07-03-2008, 10:03 PM   #11
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sweet man thanks

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Old 07-15-2008, 09:33 PM   #12
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once again, y did my posts get deleted?

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Old 07-15-2008, 09:42 PM   #13
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you pm'd me and still posted.....can't you figure out that OUR posts that i removed were not related to this topic?

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Old 10-29-2008, 01:03 AM   #14
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what about when it says 1:1:10%


Last edited by paint toad; 10-29-2008 at 08:51 AM.. Reason: ooops...clicked edit instead of reply
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Old 10-29-2008, 08:51 AM   #15
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read it again and do the math....it translates to 100%:100%:10%.......it's been covered already

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Old 10-29-2008, 10:33 PM   #16
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Quote:
Originally Posted by paint toad View Post
read it again and do the math....it translates to 100%:100%:10%.......it's been covered already
no need to read again i was just kinda of asking for others that might see it and be like what

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Old 10-29-2008, 11:24 PM   #17
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it's not hard to understand if you know basic math..

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