Quote:
Originally Posted by 962porsche
seam sealer maybe pretty close to the color but it's a seam sealer not a chip guard product .
i tried it and it's not a match though if your doing a hole cars chassis it's hard to tell .
one problem with it is cost the sqr foot coverage per tube OMG you would be spending way to much to get the mill thickness you need . it's not recommended you reduce out seam sealer .
as for a chip guard cracking i have only seen this from user error not product failure .
bed liners make for a bad chip guard protection .
bed liners are great for scratches and to a point not chipping when the metal of a truck bed gets a dent . down sides are it's not any good at stopping the sandblasting from crap getting kicked up from your tires . why? because its a harder product then a chip guard . if you have ever sandblasted any thing you will know when it comes to a rubbery things it's total hell to sand blast it and when your sand blasting a harder surface it strips down pretty quickly .
the hole point to chip guards are they are designed for combating the sand blasting from your wheels kicking up crap .
the only plus to some bed liners are they can kind of be matched to the vehicles color . the reason i say kind of is it's not a 100% match as most are a milky white color so it's more then just taking the cars color and leaving out the binder and dumping into the bed liner . your limited to 10%
chip guards .
they are designed for fighting the sand blasting as i stated before .
you can also tint it up to 10% .
down side is your also screwed if your looking to get a dead nuts match for the body color . it's white gray or black .
i have never seen any failure with any ones chip guard if you go by the tds .
i have a dead nuts match to the OE color for the u-pol but i will not give it out . maybe some day ? but not now .
the problem with painting the underside of a chassis is its going to get beat to hell .
unless your building a show car i wouldn't think about it .
this is why i'm sure your looking for a product you can match the upper bodies color that will last and look good .
as for matching texture you can but it's hard as hell with the cheap guns most people buy .
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I agree with you 100% that a reduced seam sealer will not be as cost efficient as Gravitex, it will however,
IF DONE PROPERLYbe a closer match to the factory texture than any "new age" water or solvent based Chip guard. Again, it HAS to be reduced by a wax and grease remover only, not paint thinner, acetone, etc as it will evaporate certain solvents in the seam sealer and change the build and its properties.
I have sprayed out numerous test panels with the latest and greatest (around 10 different products available on the Canadian, US and even OEM German markets) and none of them even come close. Gravitex will shrink and level out its stipple if applied in a thicker coat, it will also not hold its peaks. It is a great, readily available, cost efficient coating, don't get me wrong, but it is not an ideal solution for replicating factory undercoating.
If you don't believe me, spray out a few test pieces then cut out a 1 square inch piece of the coating and compare it with factory, the Gravitex will crumble in your hands at the first attempt at elasticity whereas the factory schutz will bend, stretch, yet return to its original state, a correctly thinned quality seam sealer will do the same, despite not carrying the "chip guard" label on the can.
What is the brand of that schutz gun? It looks like an awesome piece!