The post curing recommended for MGS 285 Epoxy is 18 hours at 50 to 60 C (120 to 140 F). I use a small space heater with a fan in a large card board box with a digital thermometer to monitor the temperature. The trunk of your car will easily get warmer than that on a hot day. Pro-Set gives data for 110 ,140 and 180 F for 8 hrs. Most model builders think that longer pot life epoxy is stronger, but if you look at the West System, Pro-Set and MGS Epoxy this correlation in not shown in the test data. The test data does show small variations in strength with different hardener mixtures but strength does not improve with longer pot life. The data does show that post curing Pro-Set and MGS does improve the strength and heat tolerance of these systems substantially, but it does not help West System Epoxy. As far as which Epoxy to use I would recommend the West System Epoxy for finishing a wooden model or bonding wood skins to a foam core and even making a mold if you are careful to keep the post cure temperature on the parts at or slightly below 120 F. If you are vacuum bagging a composite skin wing with carbon and glass or molding a wing or fuselage for a model that will be launched, flown or landed hard, I would use a high performance epoxy on these parts and post cure them. Sincerely Matt Gewain - -----Original Message----- From: Kjell-Arne Fjelde [mailto:[EMAIL PROTECTED]] Sent: Tuesday, January 11, 2000 7:21 AM To: [EMAIL PROTECTED] Subject: [RCSE] High Performance Epoxy ? What do I use? What is "post curing"?, and is this some kind of method that should/could be used on "regular" epoxy? How can one know what kind of epoxy one uses?(im thinking of strenght) Curing time maybe? Anyone got any good links that explaines these things? Am I way off when i presume that curing time is related to strenght by long curing time = stronger epoxy? Regards Kjelli >From: "Matt Gewain" <[EMAIL PROTECTED]> >To: "Bernard F Ahyow" <[EMAIL PROTECTED]>,<[EMAIL PROTECTED]> >Subject: RE: [RCSE] MGS High Performance Epoxy >Date: Tue, 11 Jan 2000 07:04:57 -0800 > >Bernard Ahyow; > > The MGS Epoxy is a high performance structural epoxy with properties >similar to the Pro-Set Epoxy system we have been selling for many years. >This last year the F3B team used MGS Epoxy to mold many of their new >models, >and asked us to add it to our line. We now have the systems in stock in >both quart and gallon sizes in both a 200 and a 300 system. The test data >shows that the 200 system is stronger, but the 300 system is less >expensive. >All of these high performance epoxy systems require post curing but the pay >off is that they are 60% stronger then the West System Epoxy. > >Attached is a page with some of the test data on MGS Epoxy and one popular >Pro-Set mixture. > >Thanks >Matt Gewain >Composite Structures Technology >www.cstsales.com > > > >-----Original Message----- >From: Bernard F Ahyow [mailto:[EMAIL PROTECTED]] >Sent: Sunday, January 09, 2000 9:20 PM >To: [EMAIL PROTECTED] >Subject: [RCSE] MGS High Performance Epoxy > > >Hey Composite Nutz, > > I've been reading the full size kitplanes lists and have run across >references >to the MGS epoxy system. Upon getting ready to order from CST I noticed >that they >now stock the stuff. So what's the deal? I know that the most common >epoxy >used >in models in West System laminating resin which is eschewed by the kitplane >builders >as inadequate. So what's different about this new stuff? Also is this the >blue >epoxy used now by Brian Mclean? Thanks for your time. > >Bernard Ahyow >RCSE-List facilities provided by Model Airplane News. Send "subscribe" and >"unsubscribe" requests to [EMAIL PROTECTED] ><< comparison_of_mgs_epoxy_to_pro.htm >> ______________________________________________________ Get Your Private, Free Email at http://www.hotmail.com RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED] RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED]
