The final job on the saber conversion was to make the pivot that attaches the bunny ears to the saber body. In the image below you can see the stock pin. It's pushed through and flared out on the red button side to secure it. Originally I just replaced the pin again.
The mechanism worked great when the bunny ears were squeezed together but I found it to be far too loose. The emitter ring would rattle around when handling the saber as it flapped back and forth. Also, on a real Graflex the pin appears much thicker than this.
To replicate the look and make it much more solid I cut a length of 3mm, 4mm and 5mm dia aluminium tube. Each was the same size as the gap between the bunny ears pivot points.
I also got some M2.5 x 8mm button head socket screws. The 3mm tube was then hand tapped at both ends for the M2.5 thread.
This piece was then nested into the 4mm tube and that into the 5mm tube. I did it this way as the alternative would have been to find a 5mm OD x 2mm ID tube or drill a solid rod out instead. Nesting tubes in this way just seemed like the easiest option.
I also cut some thinner pieces of the 5mm dia tube and filed them down to make shims. These were CA glued to the outer faces of the bunny ear pivot brackets. There was a bit too much play back and forth initially so these helped to tighten everything up.
Then it was just the very fiddly job of screwing in the M2.5 button heads from either side of the mounting brackets on the saber body.
Once the screws were in, I clamped the bunny ears in the position I wanted and further tightened the screws down with 11.5mm hex keys.
Everything was now much more secure, no rattle, everything was held in place beautifully. The bunny ear mechanism was now completed and looked so much better than the original solid one piece part of the stock FX saber.
With the bunny ears completed so were all of my modifications.