Once the gels have been cut to size, it was time to put everything back together. Reassembly was pretty simple. The trickiest part was making sure no dust got on the gels. Any speck will appear HUGE in the image...so care here was very important.
Once the gels were properly stacked and the lens mount reattached (hot glue gun is really useful for this), then it was time to screw on the reassembled lens.
The unit snapped back together quite easily. We reinserted the single screw which held the unit close and the reassembly was basically complete. This does not mean we are done. The focus of the lens still needs to be adjusted.
The simplest way was by trial and error. We made a mark (red arrow) on the outside of the case. We carefully pushed the lens using a small screw driver to adjust the focus...see the photo examples here.
Once the focus was to our satisfaction, we notched the plastic so we would have a reference should we decide to play with it some more later. It is now time to go see what kind of images we can get with the new IR JB 1!