FibreGlast Epoxy S2000, PTM&W 2050, and AeroPoxy PR2032

General Composites Discussions Products Talk
#1

I use the Fibreglast System 2000 with 2hr hardner right now. My only complaint is the price. I really like working with this Epoxy and it seems to be working out great for the structural pieces I’m building. After researching other epoxies, it seems to me that these three Epoxies might really be the same thing. The descriptions are pretty similar and the spec sheets are very close…if not the same in most cases.

Can anyone confirm if these are really all the same epoxies with just different distributors?

These guys seem like they might be the originator of the resin (2050 line):

http://www.ptm-w.com/index.asp?pgid=20

They also make the Aeropoxy PR2032 resin (is this the same as the PTM-W 2050?)

http://www.aircraftspruce.com/catalog/cmpages/aeropoxy.php

Now for these guys…does Fibreglast repackage the PTM&W Epoxy? Or Aeropoxy PR2032? Or are the all the same? Or none of the above?

http://www.fibreglast.com/showproducts-category-Epoxy%20Resins-5.html

My goal is to stop paying $100 for a gallon set of epoxy from Fibreglast, but I don’t want to give up something that is working! :slight_smile:

#2

I did a very close comparison of the data sheets of the Fiberglast an the PTM-W - IMHO, it’s clear that Fiberglast is repackaging the PTM-W. I’m not so ure about the Aeropoxy because I never saw a data sheet, but it’s probably prety close, if not the same.

#3

PTM&W makes Aeropoxy. It’s formulated slightly different for the aircraft industry. Other than that they’re pretty much the same product. I’ve never used Fibregast’ epoxy so I don’t know.

#4

I can get the Aeropoxy for less than half the price of Fibreglast epoxy. I think it might be worth a try, since I’ve heard Aeropoxy had really good bonding for structural pieces (its probably the same thing anyway).

So do you think the switch to Aeropoxy would be a decent move, i.e. the same (or very similar) epoxy for half price?

#5

It all looks the same to me, so I’m ordering up a gallon of Aeropoxy and the 2hr hardner for $50 (Wicks Aircraft), instead of $100 (Fibreglast)

Here is the ASTM test data on each product:

Aeropoxy PR2032

http://pages.sbcglobal.net/ccanedy/aeropoxy_main.html

Fibreglast System 2000

http://www.fibreglast.com/contentpages-System%202000%20Properties-319.html

PTM-W PT2050

http://www.ptm-w.com/dynamicdata/data/docs/pt2050%20bulletin.pdf

#6

I guess it doesn’t hurt to try. Aeropoxy does have a good bonding property. I just don’t use it because it’s too amber for what I do. The PR2050 is more clear IMO.

Evan