Any modders looking for good quality, surgical steel, fine-threaded male/female, tubes (for end caps, etc) might want to check out 'flesh tunnels'. These jewellery items are used by people wanting to gradually widen a hole in their ears (!!! - don't ask). They come in a great range of sizes - in increments from 2mm up to 25mm and more - so a modder can select one fine tuned to the requirements of a device they are building... for a battery tube, atty/tank enclosure etc.
I've bought a few and find them very useful. Look for the threaded ones. Here's an ebay supplier but they seem to be widely available (in titanium too).
Flesh Tunnels
I've bought a few and find them very useful. Look for the threaded ones. Here's an ebay supplier but they seem to be widely available (in titanium too).
Flesh Tunnels