>You might look for stainless steel tubing on McMaster-Carr's website. I
>found a listing for 3/16" OD, 0.132" (~1/8") ID tubing, part number
>89895K716, that looks to do what you want. There's also a 1/8" tube that
>should take a 1/16" rod (89895K712)
I'll take a look at the 1/8" tubing to take the 1/16" rod.