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- Nov 29, 2021
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- Vehicle Year
- 87
- Make / Model
- Ford Ranger
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sgtsandman gave some great advice.
It looks like it already has bondo in it. You will need to sand the rust off as best as possible and then get some rust killer or converter on it. It will come back thru if not killed out.
Working with body filler I do not lie to go over the thickness of a nickel or something similar. Sometimes you have too but when you see it real deep, it will crack out. Body filler sometimes called Bondo meaning the same thing gets a bad name. When used right, it is a great product. Only way of getting a truly level panel at times. I am still not good enough to paint a truck black. White hides flaws.
Temperature determines how much hardener you use. The colder, more hardener. Warmer take less hardener. Basically, I go about the size of a big egg of the filler and add about an inch of hardener. Once it is mixed you really don't have much time to apply it. Maybe 2-3 minutes then it just gets a grainy look to it.
Once I have the surface prepped for filler, I use 80 grit paper then go over it with 180 paper. You will hear the term Featheredge. To me it looks like a smear where the filler and the other level areas or paint/primer start to blend. Once I am done, I like to prime and then wet sand with 320. You can dry sand 320, but I can see when it is wet and helps keep paper clean and last longer in my opinion. This is where you will start seeing Highs and Lows on your repair as well.
If you have a solid edge or somewhat of a defined line, you do not have it "Featheredged". It should feel level without looking at it, but when you run your hand over the repaired area, you should not notice it. It takes time to get the feel of it.
You have to look at different angles to see a dent. I can sometimes see dents but not feel them. Other times feel dents and not see them.
It is hard to explain but you are not going to do any more damage then what is done already. Cover your filler with primer when done. Filler will absorb moisture. Primer will eventually absorb moisture as well and is only a temporary cover.
All of my primer on my truck will need to be sanded off when I go to paint it as it is contaminated with all kinds of things.
It looks like it already has bondo in it. You will need to sand the rust off as best as possible and then get some rust killer or converter on it. It will come back thru if not killed out.
Working with body filler I do not lie to go over the thickness of a nickel or something similar. Sometimes you have too but when you see it real deep, it will crack out. Body filler sometimes called Bondo meaning the same thing gets a bad name. When used right, it is a great product. Only way of getting a truly level panel at times. I am still not good enough to paint a truck black. White hides flaws.
Temperature determines how much hardener you use. The colder, more hardener. Warmer take less hardener. Basically, I go about the size of a big egg of the filler and add about an inch of hardener. Once it is mixed you really don't have much time to apply it. Maybe 2-3 minutes then it just gets a grainy look to it.
Once I have the surface prepped for filler, I use 80 grit paper then go over it with 180 paper. You will hear the term Featheredge. To me it looks like a smear where the filler and the other level areas or paint/primer start to blend. Once I am done, I like to prime and then wet sand with 320. You can dry sand 320, but I can see when it is wet and helps keep paper clean and last longer in my opinion. This is where you will start seeing Highs and Lows on your repair as well.
If you have a solid edge or somewhat of a defined line, you do not have it "Featheredged". It should feel level without looking at it, but when you run your hand over the repaired area, you should not notice it. It takes time to get the feel of it.
You have to look at different angles to see a dent. I can sometimes see dents but not feel them. Other times feel dents and not see them.
It is hard to explain but you are not going to do any more damage then what is done already. Cover your filler with primer when done. Filler will absorb moisture. Primer will eventually absorb moisture as well and is only a temporary cover.
All of my primer on my truck will need to be sanded off when I go to paint it as it is contaminated with all kinds of things.