Alright guys, one of the questions that still commonly comes up is how do I
replicate some of these OEM sound deadeners.
Some of them have textures, some of them
have shapes, some of them have lines.
What is it exactly that we're doing to replicate that?
We've got a few new techniques
that we want to show you here.
We're going to use two different products to represent this.
We're going to start first with our NVH dampening material.
As with all of our cartridges we will want to make sure
that we're going to equalize it first.
Always in an upright position and into a paper towel
making sure that we've got equal parts
parts of A and B coming out of the
cartridge before we put on our static mixing nozzle.
Once the nozzle is on and the ring is locked down
we want to dispense about two or three inches of
material just making sure that it's
equally mixed before we start applying it to the vehicle.
On this application here I want to get enough material
out here and then I'm going to knock it flat
before we're gonna try to replicate the OEM bead.
When I do this I'm going to keep the tip buried in
the wet material as I'm going back and forth so that
I'm not entering air into this.
All I'm trying to do here is just
get a large volume of material out.
Now this NVH is a two-part urethane.
It is highly flexible, it has a longer work
window than some of our other two-part products, so if you're doing a larger
area this might be a product of choice.
So for this application here today we're
going to replicate that drawn in-line look.
Right, some of you guys that may have come across this
and what we found is the best after we've applied our material at
surface and we've knocked it down flat, again pushing it to the surface, making
sure we got a nice tight seal, we're going to take a mud spreader here and I've
actually used pinking shears to put in this look and appearance so that we've
got that consistent OEM factory look.
Once we've got it flattened out all I'm going to do is
just add that style and feature
into the product by dragging it over the top.
If you have a hardened, squared-off application that you're
trying to replicate, you can use tape to tape this off.
If you're trying to repair a corner of a sound pad
in like a trunk floor area, maybe the car was rear-ended.
You can do that. Also you can use the spreader at the end to feather it out
if it has more of a natural feathered look to it.
One of the other products that we can use to
replicate this if it's more of a rigid material, some of the guys
have message us saying "I've got a really rigid sound pad, how am I gonna replicate that?"
One of the products that we recommend for that is actually our
8308 Heavy-Bodied Seam Sealer.
We're going to equalize that cartridge upward into a paper towel
making sure we got equal parts of A and B.
Once we apply our static mixing nozzle
and we lock down the ring we're going to dispense a little bit of material
making sure we got an equal mix.
I'm just trying to get material out here.
We're going to turn the applicator up a little bit.
As I'm doing this I'm keeping the material wet on wet.
I'm not allowing any gaps or voids
creating a nice tight seal to the surface so I've got no air underneath.
That's important because we're going to create good adhesion, that way
we're going to prevent the intrusion
of any moisture getting underneath.
Alright so what I'm going to do is I'm going to grab
my spreader and I just want to knock the material down first.
We're just pushing it down into that surface
making sure that I'm tape to tape
because this is what I'm trying to replicate.
What we're trying to accomplish here is a textured look.
So one of the ways that we're going to
do that is actually with a gray ScotchBrite pad.
And once we've got our material tooled out to the desired shape that we want
we can go ahead and we can start adding some texture.
Depending on what you're trying to accomplish we
can go really deep or we can go really soft. it's all going to depend on you.
If you really want to create something that's light
we can get really light, we can get really coarse.
Some of them get kind of wild and crazy.
This is just a technique, depending on what you're
trying to replicate is going to depend on
how hard or how soft you're going to push.
When it comes to sound-deadening
replication hopefully, these couple of little tips help you.
For more information on this and all our seam sealers
please visit us at 3M Collision Repair Academy.
Also check out some of the other videos we've
got on our YouTube channel here.
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