Hey, then the readers are wide awake too!
Excellent, I hope and trust this build log serves to guide and maybe inspire someone to actually take the step one day and build a plane. If I can do it, I think anyone can
The blending of the resin, indeed. I did not know what one calls it, but yes, the actual resin to hardener mixture remains a constant 1:0.33 (1 part resin to 0.33 hardener <AMPREG 21>), although the makeup of the 0.33 is 50% slow and 50% fast hardener, therein the "blending" term then. This ensures basically a slightly faster curing of the resin.
Bear in mind (this is for the people out there like me, who only now learned about this) that the EPOXY resin is very different to the POLYESTER resins one use. Polyester resin already has the hardener mixed into it, but it is "encapsulated", if I can describe it as such, in a chemical process, which then inhibits the release of the hardener into the resin. This means the resin has the potential to harden, but cannot as the inhibitor is active. Adding the CATALYST to this resin, actually serves to breakdown this inhibitor around the hardener, which then causes the resin to start curing. Also, because of this action, the more catalyst you add, the quicker the resin cures.
Now EPOXY resin leaves the mixing of the hardener into the resin for the user thereof and hence, you need a fairly decent scale (digital with 1gr increments is fine) to get the mixing done. Importantly, mixing in more hardener will NOT cause a quicker cure! It simply means your mixing is less than ideal and likely will not harden at all!
I trust this is useful info for someone, it took me 43 years to find this out
Tuesday I'm sheeting my rudder, cannot wait