how should they be filled, should i just get some of that bondo backing stuff and bondo the wholes, or should i get them welded shut.

 

welded!!!!!!

 

welded... because filling holes with bondo could possibly invite moisture which equals rust... that and filling holes with filler only is a low quality repair

 

weldeddddd

 

would i have to sand down the rest of the paint on my hatch to the metal then repaint?

 

you can fiberglass the holes. welding causes burnt metal that needs to be rust proof with fiberglass any way. fiberglass won't rust like bondo. no do not sand down the rest of the car to bare metal. this will only waste your time. fiberglass cloth, fiberglass, bondo, etch primer, surfacer, then feather out the paint so that there is no tell line.

 

what i do is, i fiberglass the back of the hole, then i bondo the top.

 

i cant exactly get to the back of the holes though

 

if its a hole smaller than your pinky, im pretty sure the bondo can cover it up if u play with it

 

best bet is to get it welded

 

can always use jb weld hehe

 

So if you weld it how do you stop the back side of the hole from rusting?

 

sand it to metal... dent the area with the holes... then bondo

 

It sounds almost like no one keeps up with the current refinishing market.

There are several options to close an emblem hole properly without having problems in the furture.

You CAN weld the hole shut. This works fine. As everyone is suggesting.

You CAN use a filler to do the job as well. Of course you wouldn't use "bondo" bondo. You would use something more like everglass, which is a kevlar re-enforced filler. Or kitty hair, which is a fiberglass re-enforced filler. You would prep the inside of where the hole is according to the manufacturers specifications, then smear it on from behind and hold it there with a small square of metal until it cures. After that, just sand and prep the front side appropriately.

There is one last option which no one has suggested. And this option is the one that I would do personally. Go out and buy 3m's panel bonding adhesive #3118. It's a two part adhesive which is formulated to be a substitution for welding. It's some serious stuff. Rent the gun from an auto supply place, prep according to 3m's specifications, then squeeze some in there, let it cure, sand and prep. This is what I would do, there are a ton of benefits that I'm not going to get into, that would be another thread altogether.