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Old 09-11-2010, 07:47 AM
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leaving filler uncoated....

Okay, more newbie questions. After covering metal with epoxy, I'm ready to apply filler. Since I rarely have more than a couple of days in a row to work on my truck, how long can I leave sanded filler exposed before priming? My truck stays in a metal garage with no climate control.....would it be better to brush on some epoxy the same day I apply the filler, or will that just mean more work later? I've never brushed it on before.

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Old 09-11-2010, 08:21 AM
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Quote:
Originally Posted by Hwyhogg
Okay, more newbie questions. After covering metal with epoxy, I'm ready to apply filler. Since I rarely have more than a couple of days in a row to work on my truck, how long can I leave sanded filler exposed before priming? My truck stays in a metal garage with no climate control.....would it be better to brush on some epoxy the same day I apply the filler, or will that just mean more work later? I've never brushed it on before.
I'll let the pro's here correct me if i'm wriong since it's been a while for me on body work,but..aren't you supposed to only use Filler on bare metal only?.

If so,i would sand the area needing filler down to bare metal,apply filler and sand to you're satisfaction,then use a spray can primer or any paint to cover any exposed metal and filler until you get back it for the final sealer primer,it can easily be sanded off in that area for further work or the final primer.
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Old 09-11-2010, 08:36 AM
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epoxy first, filler then epoxy. polyester will soak up moisture like a sponge.
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Old 09-11-2010, 10:22 AM
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x2 with shine. do a panel at a time and epoxy that panel once the filler work is done.
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Old 09-13-2010, 02:36 AM
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I did the body work on my truck and left the filler unprimed out for weeks, it was sittin out side not even in a garage and the paint and body came out great I've don't couple truck this way and never had a problem but I'm no expert
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Old 09-13-2010, 09:22 AM
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Quote:
Originally Posted by 59gmcfleetoption
I did the body work on my truck and left the filler unprimed out for weeks, it was sittin out side not even in a garage and the paint and body came out great I've don't couple truck this way and never had a problem but I'm no expert
"Came out great" is NOT a good thing to go with.
This is one of those things that there is no "gray area" on, there is no it works for some people kinda thing.

Polyester filler WILL absorb moisture, this is not my opinion this is a fact. In a dry garage in little humidity it is fine, as you are working to leave it uncovered for weeks isn't a big deal.

But to put it outside???? That is a HUGE no no and we wouldn't ever want to do it.

Being it "worked" for you, that is fine you lucked out. But it is NOT the thing to do.

If you can do one panel at a time and get it into primer that is best.

Brian
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Old 09-13-2010, 11:54 AM
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Thanks for the responses. At best I could maybe do a panel, ie. fender, door, hood in a day (apply filler, let it cure, sand it, clean it and epoxy over it in the same day. However, as I'm an utter novice with body work and filler, it is quite PROBABLE it would take me more than a day to get the panel perfect or as good as a novice can get it. If I were a pro, it would obviously not be a problem...I'm not though. The metal is covered with epoxy, so the moisture should stop there. My most recent thought is it may have to sit for a week or so while I "perfect it", so I will keep a tarp over vehicle and then maybe put some hot work lights on it for a short while before I epoxy over the filler. Perhaps this would rid the filler of any moisture?...or would the filler integrity be compromised permanently by any moisture? Again it is in a closed metal garage with a small exhaust fan I keep on most of the time, but is not insulated, cooled or heated Not trying to be thick-headed here, but I don't want all my sweat to be for naught a year after it's been painted...
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Old 09-13-2010, 12:03 PM
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you'll be ok. just don't leave it outside . dew is acidic most everywhere. throw some old bedsheets over it and you fine.
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Old 09-13-2010, 12:14 PM
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Thanks Shine, you seem to have a solid reputation and logical advice...think my wife will miss the linen?
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Old 09-13-2010, 12:28 PM
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yes and she will use it for an excuse to go shopping for new stuff..............
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Old 09-13-2010, 03:46 PM
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Dang, you're right!...oh well, guess I'll wait for the neighbors to hang their laundry out ..lol....yeah, like anyone still does that except for my Mother maybe....
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Old 09-13-2010, 06:28 PM
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Quote:
Originally Posted by 59gmcfleetoption
I did the body work on my truck and left the filler unprimed out for weeks, it was sittin out side not even in a garage and the paint and body came out great I've don't couple truck this way and never had a problem but I'm no expert
HWY,be sure to note what state the comments come from ... differnt climates have differnt effects.
When I lived in Ocala Fla. the humidity was so thick it was more like floating rain.
I think you would be well advised to cover your work with a blanket if its going to sit over night and do one panel at a time just to be safe...also bondo wont suck up moisture quite so bad if its unsanded ,so before you go in for the night lay a final coat of bondo or glazing putty and leave it un sanded,,, cover it up and you should be alright..maybe let it sit in the sun a while before applying any other coatsof filler...I wouldnt waste primer coating it at night if the work isnt finished ,,,,I never have...but it wouldnt hurt...
If you were building show cars it might be a little differnt and you would have a dream shop but then again you wouldnt be asking for advice..that humidity is terrible in Fla...just look what it does to bare metal...I've even had cars rust over night. people in the dryer climates have it made...in the shade...At least you got your epoxy on and are working over that ...its a must on this coast...

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Old 09-13-2010, 09:18 PM
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I often find a stopping point between sure it's straight and need to block one more time to feel good about priming..
Best medicine has been to at least get that panel of the day in it's skim coat and then useing *Iceing glazing putty leaving it in that during distractions etc.. If your careful to cover even any high metal that has sneaked in there you will be good for a few weeks/months knowing when you get back to it your in a blocking step.
Different parts of the country have different humidity factors...

http://www.a2zautoforums.com/showthread.php?t=4492





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Old 09-13-2010, 10:03 PM
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Amen on the humidity in central FLA ! Yes, bare anything down here flash rusts in mere hours, sometimes you'd swear MINUTES. No, I won't bite off more than I can chew with the filler at one time, meaning I won't even attempt more than one panel at a time. My goal is not to leave filler uncoated more than 2-3 days. It will definitely be covered...heck, I might even leave a small drop light on near it Maybe this would be a good time to pitch the idea to the boss for me to insulate, dry wall and air- condition my garage Then again, for that much money, time and sweat, I could finish my ride!
Thanks for all the tips!
James
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