Making my own 4020

crewchief227

Needle-chuck Ninja
So I found the MSDS for 4020. And from what I can tell the only difference from 4012 is the Acetone. But the bottles could have told me that. The MSDS told me the correct mixing ratios :D. SmartSelect_20190311-110443_Adobe Acrobat.jpgSo I'm on the hunt for the purest Acetone I can find (seems plentiful & cheap locally), and since I have over 36oz of 4012 on hand gonna take my graduated cylinders, and do a little mixing . I'll report back with my findings compared to the little bit of 4020 I have left :thumbsup:
 
In fact older documentation shows 5 percent.

I believe the switch to higher percent and mixing was due to the low percents storage times. Acetone can evaporate through the bottle at a slow rate. So they upped the percentage and let you mix it down on your own.

7 percent has been great for me.
 
That’s true, around the end of 2018 the documentation said 5%. I’ve tried adding acetone to 4012 without any problems. I didn’t notice any particular benefit, but that is as much down to experience and personal preference as anything else.
 
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