Mine have cracked repeatedly with relatively minor contact with other
objects.  Pressure molding is going to give you better cloth to resin
ratio(as would vacuum bagging), but matt, ounce for ounce, is much
weaker than woven cloth with all other variables being equal.

Resin Head.

At 10:07 PM 12/25/2005, George Goff wrote:
>-----Original Message-----
>From: Max Wellhouse <maxjoyce@IPA.NET>
>To: vanagon@GERRY.VANAGON.COM
>Sent: Sun, 25 Dec 2005 19:57:07 -0600
>Subject: Re: bumper repair was Re: tube bumpers
>
>there's no telling what sort of crap
>resin system VW used on those FG bumpers. It looks like a chopper
>gun operation to me.
>
>DM&FS
>-----------------------------
>
>  I'd hardy call those bumpers crap; in my experience, they are
> pretty damn tough.  Also, they appear to be pressure molded, not
> sprayed into a low tech mold perched on saw horses in the back of
> someone's garage.
>
>George
>