Related to this filter (I love mine, as my cuts are not 100% accurate but im getting better! and I like the reduced bite on my spirits)
I designed a clamp to hold the pipe while ya refill it with carbon. Free to download and print yourself. Its still a work in progress so comments/feedback welcome.
If you dont have a 3d printer inbox me and Ill see if I can help you out.
https://www.thingiverse.com/thing:4380334 To the mods and Admins, the link above is to a 3d printing file repository, all files on there are free to download, if not allowed totally understand if the link is removed.