Pringles Tubes As Rodipet Enterrado Tunnel System?

[mlwinters]

I was browsing the interweb at German style cages a few days ago and came across the Rodipet Enterrado tunnel system. I love the idea of having a tunnel system under the substrate. However when I looked to see what the price was, it was WAY over priced, at least for my liking (see here (Amazon UK)), (demo video (YouTube)).
This got me thinking, being almost addicted to Pringles and having collected a load (around 25) for another project, I wondered if using Pringles tubes would be an option. After looking around to see if Pringles tubes were safe for hamsters, I found this thread on Hamster Central about them. The thread was last posted on in 2012 but the from what I can see, the general consensus seems to be that they are safe provided one removes the metel foil from the inside and cleaned/sanitized (as with any toy).

Would you say (over 5 years later) that this still accurate information?
Also what are your thoughts on the Rodipet Enterrado like tunnel system underground as shown in the linked demo video?

I did cut a couple up to test the geometry of the 90° bends with the T-pieces so I know its technically possible, I just wanted to check with you first before I comit the time, glue and tubes so I dont build something unsafe. Interesting point, the Rodipet tunnels are around 60mm in diameter, I make Pringles tubes 73mm in diameter, I asume the bigger diameter would be an useful advantage, please correct me if wrong on that though. I also like the cheapness and ease of replacement if/when a tube gets damaged, pee'd on ect.

Here's a picture in case you don't want to click on links, hope its not too big.


Please let me know your thoughts on this and if you think using Pringles tube for the above tunnel system is safe. Thanks for any advice,
Morgan