i cant get a few dings leveled right.
i mix the bondo and hardener to where its almost a pinkish grey color, then spread it kinda thick over the area. i let it dry for about 30min, then block sand with 120 grit paper. it always leaves a very, very shallow "dip" when i rub my hand over the spot.
Don't sand with hand and paper,use a block.I let it dry for an hour (probably not necessary),but I like it thoroughly dry,then block sand,then glazing compound (when I'm happy with the bondo results).Sand it a little,check it.You can also spray a light coat of flat black on the area to look for high and low spots.Use a block,though.By the way,I don't know if anyone knew this or not,but,the Bondo brand spreaders are the color the bondo should be when mixed correctly.
how big are the dings?
Got a pic?
Vinnie, I never knew that. Thanks for the tip.
the dings are about the size of a quarter. i dont have any pics, and its dark outside right now.
ill try one more time, then say screw it. im not looking for anything show quality. i just want a good 20-footer job. :D
Even with a 20 footer,use a block.You can get them different sizes.When you're "hand sanding",the panel can feel very smooth,but your hand and fingers are rounded,so,that is what translates into the panel after sanding.By using a block sanding method,it keeps everything flat.Patience helps while sanding.Don't wet sand Bondo (said as a "just in case").
Make sure you grind the paint out of the dings first. Use polyester filler. it won't shrink. bondo and spot putty will keep shrinking for a couple of months after your done, and usually show the infamous mini "ass print" in the paint..
If you use a block and they come back, use a longer one then. and also use the guide coat like Vinnie said.
I used a polyester filler as well.I have used Bondo with good results in small areas.I wouldn't use it in a deep dent,crease,whatever.I do like glazing compound on the finished sanded Bondo to fill in any pin holes that can,and probably will, be left behind.
once you get into multiple dings and warped imperfections on a panel. You need this and a long board after you fill. I'm sure you won't need this though.. ;)
(http://i233.photobucket.com/albums/ee79/daminc/Stuff%20I%20dont%20know%20where%20to%20put/IMG_4872.jpg)
Mmmmm,good stuff......especially with a sliced banana,a little sugar,and some milk.Tasty.
what is this green stuff called that i see a lot of people use?
duraglas, its bondo mixed with fiberglass.
it's the waterproof stuff
i went back over all the spots by block sanding with a wooden block(instead of the rubber 3M one) and it very smooth. i sprayed some black paint over the area, and you cant even tell where i bondo'd at. :)
Black paint.... Hmmmm.....
That blue would look awesome with black
Your rubber block must have been to soft then.
flouresent lighting does not lie either when sanding. makes low spots stand out like a green fly in a sugar bowl.
http://multimedia.3m.com/mws/mediawebserver?66666UuZjcFSLXTtNXME4X&XEV76EbHSHVs6EVs6E666666-- (http://"http://multimedia.3m.com/mws/mediawebserver?66666UuZjcFSLXTtNXME4X&XEV76EbHSHVs6EVs6E666666--")
Well i guess Im going to claim to be a top guru! We just got this whole system at work. Our 3m rep garunteed no pinholes and a perfect mix every time and so far he is right. The new gun takes a new fancy iso tube which for the do it yourselfer im sure would get expensive but since my boss doesnt mind i dont either.
Since you can lay down just the right amount of mud that you need you use less thus needing less sanding. And it really is a handy system.
long story short though, theres is no replacement for good metal work.
right. that guy seemed like a quack. Yes the system works amazingly. but you cant guarentee that there will be no pinholes. we had about 7 or 8 in a 5x5 inch area. GRANTED the pinholes were probably from the 'tard who spread it on but you cant guarentee no pinholes
The goods outweigh the bads on the machine. but im sorry i'd rather have a gallon bucket of Z-grip and mix my own. The ammount of filler thats in the cartriges on those machines isnt enough and it costs more in the long run to buy more. even with the excess ammounts of filler you have wasted from over mixing, you still have more in a 25$ gallon of Z-grip than you do in a 20$ cartrige of that 3M stuff.
As for answering your question... Take a paint stirring stick around the area where your low spot is and mark the beginning of the low spot and end also and patch in with some filler. by what your tellin us its like what? a quarter sized ding? mix up about a half dollar sized ammount with a little line of hardner and let 'er rip.