Mixing hardeners (slow&fast) possible?
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I ordered a gallon of clearcoat and half a gallon of “fast” hardener, but in stead of the fast hardener my supllier delivered two quart “ultra fast” and a quart “slow”. (I think the fast was out of stock)
According him you can mix the ultra fast with the slow to create “fast”.Is he correct? In that case i think it’s a very good idea because i can adjust the type of hardener to the type of paintjob and the weather temperature.
I do it all the time.
Ideally you want to mix two products next to each other in speed. There could be significant difference between an ultra fast and a slow.
In a pinch it will work but you may have to give somewhere.
65% ultra fast + 35% slow.. and I think it will do it. I have tried once and did well.
Paint companies produce 2 types i.e Ultra fast and Slow.. and they mix them accordingly to get the proper ratios.. you need experimenting but I found that this ratio 65/35 works well to get a fast hardner..
Ofcourse if the mix is done for the same product/brandWhat you have to be careful about is ensuring you mix enough ‘modified’ hardener to cover the complete requirements of the job. That, or make absolutely sure you mark out your ratios of the two hardeners so you can recreate the ‘mix’ if you need more. You can’t/shouldn’t do an ‘eyeball’ mix. This might lead to a slower hardened underneath a faster hardener mix.
It’s critical not to use the hardeners from two different paint manufacturers, or even paint systems too. All hardeners should be from the same manufacturer and system.
You can also mix different speeds of reducers, too.
[quote=”Paintwerks” post=33130]What you have to be careful about is ensuring you mix enough ‘modified’ hardener to cover the complete requirements of the job. That, or make absolutely sure you mark out your ratios of the two hardeners so you can recreate the ‘mix’ if you need more. You can’t/shouldn’t do an ‘eyeball’ mix. This might lead to a slower hardened underneath a faster hardener mix.
It’s critical not to use the hardeners from two different paint manufacturers, or even paint systems too. All hardeners should be from the same manufacturer and system.
You can also mix different speeds of reducers, too.[/quote]
Agree 100%. Even if the paint and hardeners are the same technology, mixing different brands can have some unexpected results. :headsmack:
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