not enough hardner ?

J

jbon64

i noticed while mixing up my last round of universal clear that i had more clear than hardner left . not by much , maybe 4oz left in a gallon can . i noticed tonight wet sanding a quarter panel , that it sanded down quicker and at one point the residue seemed to ball up in the paper . should i continue the process ? (800/1000/1500/2000 buff) or stop with the 800 and shoot several more coats of correctly mixed universal ?
 
How fresh is the clear? If you're worried because of the questionable leftovers it's not uncommon to have a little bit of clear or hardener left over with an accurate mix, happens to me with epoxy all the time.
 
you dont need to shoot more. 4oz in a gallon overall is nothing worth mentioning. if you said you mixed it 2:1 instead of 1:1 then thats another story. if the clear is balling up then you need to let it sit and cure some more before continuing. give it a couple few days....especially this time of year
 
it has sat for a good 2 weeks ,so i assume it's fully cured. i just noticed how much quicker the quarters sanded down compared to the hood and trunk . i painted the car apart and am leaving it all apart until the cut and buff is done. as far as the clear balling up , it wasnt a whole lot and seemed to only happen on the first initial pass and pretty much was gone on the next few passes after a rinse . paranoia on my part i guess , murphy's law hasnt struck yet .
 
Nothing to worry about!
First of all those mixing cup measurement can be off 1-3%, worse i ever saw was one brand was 5% off and only reason i knew that is the warehouse was out of the brand I buy case lots of and they sent me there warehouse brand and all my gel testing was wrong.
But most important, SPI OVERFILLS all containers, the reason for this is going by weight per gallon a lot of products would be up to 2-4 inches below what looks full in the gallon or quart.
I never want anyone to call me and say my gallon or quart is short of material, so with this said, its not uncommon to have extra activator or extra clear or epoxy left over from your mix.
The only product that is now an exact fill is the 700 and we changed that about 3 months ago as overfilling the plastic jugs they expand and we have always had a problem with the cases bulging.
One of our new guys figured this out and programed the filling machine to do a full gallon and I was not advised until after the 300 gallons was packaged but the cases looked so good for a change we left them that way. I estimate this costs us an extra 6-10% of our proffit depending on product to overfill but I chose to live with it and the only stupid bean counter I have to answer to is me.
 
thanks barry !! you are correct , finished out sanding with 3000 trizact then 5000 trizact , buffed and polished out awesome !!!
 
That is great!, I bet I get at least one call a month where someone new has used out product for the first time and now he is done with the gallon kit and he calls in a panic attack because he has a little part A or a little part B left over..
 
Bob Hollinshead;n70672 said:
Usually the hardener
Click to expand...

That is true, the hardener is easier to over fill because it is thinner and how we decide is we just want enough room for some expansion in the can.
We keep the plant 70 degrees 24/7 365 days a year but the 100ft part where we keep all the resins and iso, when real cold will get down to 65 and of course it does not take much for the partA"s to thicken up. That is why all formulations are by weight instead of volume, as the weight never changes.
To see for yourself, try to spray the clear or primer if the contents is 50 degrees. Much thicker.
 
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