DIY Bumper Crack Repair

today we're going to be fixing a cracked

bumper cover so here on the back of the

bumper cover you can see the crack goes

down almost halfway through first I'm

going to need to do is clean up this

edge so you can take epochs for that I'm

going to be using a rotary tool with a

grinding bit what you really want to do

is increase the surface area by grinding

the v-groove into the crack so that the

epoxy holds

I'm going to take a little bit of 40

grit sandpaper and rough up the area

around the crack and next we can use a

little bit of acetone or alcohol to

clean the crack both on the inside and

on the outside cleaning the inside

here's what the surface looks like after

it's been sanded and cleaned next I'm

going to hold a crack closed until it's

nice and flush and use a pair of locking

pliers to clamp it at the top next I'm

going to close the crack into place and

use a little bit of tape to secure it so

it's nice and flush I got the crack

covering the tape and it's nice and

flush here's what the inside of the

crack looks like once it's nice and

sealed up on the other side to fill in

this crack I'm going to be using some jb

weld plastic Bhandar it's a two-part

mixture that has a 15-minute setting

time I'm going to mix up my epoxy and

fill in the crack I'm also going to be

using a little bit of drywall tape at

the back here to make the connection a

bit stronger all right so I'm just

mixing the epoxy up here I'm going to

scoop that and apply it into the crack

and put it in nice and smooth make sure

it fills into the crack next I'm going

to lay down some of this drywall tape to

reinforce it a little bit better and

then on top of the drywall tape I'm

going to put another layer of epoxy just

to hold it in there nice and alright so

this is what the epoxy looks like with

the drywall tape on top of the crack

we're just going to let that sit

overnight until it cures and we'll come

back in the morning and see how it looks

alright so I've let that dry for about

12 hours and you can see the epoxy is

nice and hard and you can remove the

clamps alright next I'm going to remove

the masking tape you can see what this

crack looks like underneath you can see

the crack is nice and smooth and almost

flush at this point you can just put

some touch-up paint on the crack or you

can put some filler and spray paint over

next I'm going to take a little bit of

320 grit sandpaper and rock off the

edges around the crack there's the body

filler holds better I'm also going to

sand any other places that need to be

painted next I'm going to use a little

bit of painting on a cloth and clean the

area nice and well and just make setting

up a set of bondo body filler here and

then I'm going to lightly apply a thin

layer to the crack

all right once the body filler is dry

I'm next going to sand it with some 80

grit sandpaper just most of the filler

off I'm going to hit it with a little

bit of 320 grit to smoothen it out

sanding complete I'm next going to wipe

it down with some paint thinner and make

sure there's no grease on any surface

before we paint I'm going to prime the

areas that are damaging on the buffer

I'm gonna apply my second layer of

primer rather the primer is dry next I'm

going to wet sand it with some 400 grit

sandpaper now that I finished wet

sanding you want to wipe it down with a

nice wet rag feed everything off the

pink color you just want to put on a

very light coat - the paint will run

second coat here's what the bumper looks

like after it's been painted it looks

really nice and clean you can only see a

small hairline where the crack once was

but other than that it looks pretty good

next we're going to install the bumper

onto the vehicle and here's what

everything looks like once its installed

on the car why are we always left with

extra fasteners after finishing a job

like this