ORIGINAL: frequent flyer
My fuses all look the same as that. I'm sure it is Epoxy resin. If the fast hardener is used it is more amber colored that the slow hardener. You can see in these pictures.
On second look, they do indeed. As a point of interest though, if we take the picture with the three EU-1A fuses, I assume the amber one in the back is the original from which you made the mold. The other two in the front look to be of slightly different color. Does this mean you used fast hardener on one and slow on the other or is it just the difference in time that each has had to cure? Does slow hardener in general result in a stronger fuse compared to fast?
Looking forward to seeing the first Illusions come out of the mold!
David.