Thanks everyone. On Thursday I will be heading down to see if they carry entropy epoxy although its not listed on the fiberglasshawaii website. According to the entropy website, they are one of the places that show up on store locators. If not, ill ask them about either the aluzine or systemthree epoxy.
Since I’m still learning all this stuff, what is the max cps an epoxy should have for infusion?
I’m not sure how close these two places are to you, but they are both listed as a distributor of Resin Research suppliers (even though their websites make it seem like they just make surfboards).
Surflight Hawaii - Oahu - 808-637-6900
Topperboards - Kauai - 808-822-0376
The RR 2070 is a good infusion epoxy, and the slow hardener will probably suit your needs. They have a
That question doesn’t really have a straight forward answer, as you don’t want the thinnest epoxy possible to flow through your part too quickly. Epoxy moving through a part two quickly can cause some small pinhole voids as it doesn’t get fully wet out. Too slow and it will kick too quick and you won’t finish the infusion.
Control is more important, test a few different ones at various CPS ratings and see how they works for you in your environment. Since CPS is rated when both the epoxy and hardener are mixed, different speed hardeners will effect the viscosity and the flow rate. Your unique climate (hot, humid) will also effect the CPS. What works for you at 80F probably won’t work for someone in Canada in the winter.
You can always make changes in your system to speed up and slow down the flow depending on what infusion epoxies you’re able to find. Adding extra release film or breather can slow the flow down, as can not opening up your valves all the way. Changing the flow media or adding more of it can speed the flow up, same with opening up your valves full throttle. Heating and cooling your epoxy can also change how it flows.
OK guys, I have finally gotten a chance to work on the infusion again. I went to the store, but the only entropy resin they carried said that the working time was only 15 min. So they told me to go and try the Systemthree MirrorCoat (2:1). When mixed it is 700 cps.
So I tested the epoxy and it took 50 minutes for it to set.
So I had everything setup and degassed the resin. At the 25 minute mark (i timed it) I infused, but the resin only made it into the spiral tubing. What a waste 
For some reason it barely came out. At first I was thinking that maybe it was to viscous and didn’t make it through the peel ply, but when I compared it to my polyester resin, and it the epoxy was much thinner.
Is the viscosity at 700 cps still to viscous?
Either that or I used my scale i bought off amazon to do my weighing. Since it was a 2:1 I made 4.0 oz of part A to 1.75 oz of part B. This time it set much faster than 50 minutes. I believe the scale is not accurate and maybe there was to much part B. Is this the reason why it didn’t flow?
Why did you mix differently to the ratio? 1.75 is not 50% of 4? You NEED to be exact with your measurements, you cant change the ratio at all. Mixing in extra hardener shouldn’t affect the the pot life of epoxy either, it will just contaminate the resin and cause it to not cure properly. Epoxy hardener is not a catalyst like polyester mekp, it’s molecule for molecule.
700cps is thick, I wouldn’t use an epoxy that thick. But I have heard of it being done, so it should be possible. You are using flow mesh yes?
Sorry exhaustion set in and i couldn’t do straight math in my head :eek:
But yes, I am using flow mesh.
I’m thinking it just might be that the epoxy is to thick. I tested a smaller empty square piece and it flowed decently. I’m thinking since I didn’t add the ratio properly. I over poured and had roughly 3.5 oz of part A and needed to adjust by doing 1.75 of part B. But hey my math is bad and it’s late at night lol…
My polyester resin seems thicker than the epoxy and it flowed nicely so I’m thinking that the only problem could be that the epoxy did not have the correct ratio mixed and I infused it when it was beginning to set. Anyway, I’m kind of stuck now since I can’t seem to find a resin down here with a lower viscosity. Most mainland places won’t ship here since they can only send chemicals by ground.