3 hours ago, sinetwo said:
Good tip on the cap, I guess if there is a suitable one then a bit of neoprene + a loop tag in the neoprene + cap + tiny lead would do the trick
Yep, the slight lip on the glass end also allows you to tie (tightly) paracord around the tube without it sliding off. If you create a loop on the paracord before you tie-it on to the tube, you can use the loop to either secure a cap or to clip it on to a BCD. This is then in addition to the white cord loop that's already on the LSD.
A bit hard to explain (!) - but I'll post a pic when I can. Retra Oskar suggested this and it's a neat way of having two securing points for the LSD if you want to take it off during a dive and secure it to your BCD. The LSD is not something I'd want to lose mid-dive - or any other time!
For old wetsuit material, next time you're at a dive centre, ask them if you can scrounge a bit. Most dive centres will have few scrapped, tatty wetsuits kicking around. You only need about 5" of sleeve.