I’ve been making some glow gaskets for my C8+ Anna-40-6 conversions. I tried to find some good glow in the dark 3D printer filament. The best I found was made by SunTop, which was OK, but not great. The other stuff I got was just awful.

I then tried moulding one with UV resin and Strontium Aluminate. I made the mould using alginate and dropped in one of the 3D printed gaskets, it worked, but the mould dried out.
I bought green and aqua Strontium Aluminate, the green is brighter. I also bought some LIT, the world’s glowiest glow pigment, by Stuart Semple. The Strontium Aluminate is just as bright as LIT and much cheaper. The brightest below is the original Strontium Aluminate UV epoxy cast (mid left), next brightest is the SunTop filament (bottom left), the rest are the best from a pack of 6 glow in the dark filaments, which are useless.

Next step was to 3D print some positive moulds, to make negative moulds using RTV silicone, then some slow set crystal clear resin and Strontium Aluminate to make the final gasket (sorry no photos). As well as the Anna-40-6 I made some Anna-40-7, a skull lanyard bead and some large hole beads from a mould off ebay, to use up any excess. First gasket and bead went on a C8+ conversion I made for my Dad, and gave to him on Fathers day. The second batch are in the garage curing. The resin used a 1% hardener ratio, which is difficult to measure. I had to buy some more accurate ‘drug dealer’ scales. It also takes 7 days before you can start to clean it up.



I’ve already put the designs for the Anna-40-6 and Anna-40-7 on Thingiverse (Anna-40-6 glow gasket by ecotack - Thingiverse). I’m not saying they are great, but they work on my Anet A8. I’ll put the moulds on there if anyone wants them.