Quote Originally Posted by TopJimmyCooks View Post
I ordered a meter of 3mm OD/2mm ID PTFE. I'm going to order a sampler pack of 1.75's to try, such as

http://www.amazon.com/Sunwin-1-75mm-.../dp/B00N0A8YHI

Not planning on anything flexible. I will try that to start. Thanks.
Awesome. Let us know how it works. I wonder if it'll be tight enough to stay in place. If not, let me know and I can generate some new custom STLs.