Quote from: SeriousTrouble is Ive used this stuff too, and you arent being very clear on what you mean, base fibre glass wont hold anything unless you put it in something, its just a mat of glass fibres.

Fibre Glass as a solid material is encased in a resin to make it useful.  Its also a pain in the arse to mould because of the way it all goes together.  Best example I used to see every day was the neck of a Septic tank or similar when it needed to have a sealed lid.  

GRP can be blow-moulded due to basically being in most cases polyester.  GRP in its various forms is far more versatile in day to day use, most cars youll see have large amounts of the stuff built in to the interior because its relatively cheap, light and easy to shape.

Both have their uses, but youll often see GRP and Resin Fiberglass being used alongside each other for some items.  Small domestic Sewerage treatments plants we used to sell had the two different materials, in fact one brand I can think of used to make tanks out of GRP then coat them in a thin layer of fibreglass and resin to make them last longer!

Its resin fibreglass and Glass Reinforced Plastic now, trouble is they are both generically termed GRP along with epoxy fibreglass. Plastic means mouldable, which, polyester, vinylester, resin and epoxy are.

You do know that epoxy can be used too?

Quote from: SeriousIts resin fibreglass and Glass Reinforced Plastic now, trouble is they are both generically termed GRP along with epoxy fibreglass. Plastic means mouldable, which, polyester, vinylester, resin and epoxy are.

You do know that epoxy can be used too?

Yeah, Glass can be mixed with pretty much anything, however when youre selling tanks different compounds are defined as different things.  Epoxy is just using two different compounds that stick to different things AND each other anyway.  Can be a mix of various bits.  Generally if you can see the "weave" in a tank itll be called fibreglass, if its bendy and you cant see the weave unless you start scratching at it, and its bendy youll consider it GRP.  GRP itself can mean polyester, vinyl or a range of more modern plastics as well.  The real "trick" with these things is working out what chemicals go in each tank without degrading it.  TBH if its just Veg oil then a straight plastic tank with some welded in baffles would likely work fine.  A "Coffin" tank with baffles welded in, and the lid welded on would likely be a fairly cheap option as the contents are non-explosive.  

well.... after all that..... the 25+ people in the sprinter forum who promised me the main tank and an expensive in tank pump inside it.... were all wrong... it doesnt have an electric pump anywhere....

so Ill use the original tank for veg oil, and pick up a 5gal boat tank to go in the back corner behind the wheel arch.


(doh)