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For the liquid loops, I'm using Clear Plastic PETG Tubing from Excelon. This is the same material used to make Pop bottles, so it won't stain and it's also shatter resistant.
Video of PETG tubing for PC hardline. Primochill Clear version of PETG isn't any different than what McMaster sells for less, which is purchased and resold direct from Excelon, who is largest manufacturer of PETG.
Purchase PETG Tubing, 1/2" OD x 3/8" ID, McMaster.com #9245K21
PETG only works with Fittings for 1/2" OD Tubing,
http://www.youtube.com/watch?v=y2yZsIzHYdgPDF Data Sheet for PETG Tubing made by Excelon
http://www.thermoplasticprocesses.com/sites/default/files/tpi-petg.pdfI'm using Primoshill "Revolver" compression fittings, but I've painted mine Matte Black.
Here are the steps involved in working with PETG, same identical procedure as cutting and bending the Acrylic tubing from Primochill, so here are the photos I used for the Frozen Tech Station build for FrozenCPU.
I'm using a Jewelers hand saw, but Hack saw with bi-metal cutting blade also works great.
Cutting down the PETG tubing to length
To clean and debur edges of the PETG plastic tubing, you can use hand file or medium grit sandpaper. I've opted for quicker solution and used Plumber's tubing reamer. You can pick-up these Tubing / Pipe Reamers at most Home Improvement Stores, in their Plumbing Aisle. Pretty handy tool for this task, so placed a bulk wholesale order and stocking them here,
Acrylic / PETG / Pipe / Tubing ReamerPlace reamer on flat surface, hold it in place, apply pressure while twisting or rotating tube clockwise or counter clockwise*between three blades, then flip reamer upside down and repeat for inner diameter.
...then flip reamer upside down and repeat for inner diameter.
It does decent job...*you can also use medium grit sandpaper or hand file as alternative*
Place Primshill "Revolver" compression fitting shell over PETG tube first, then o-ring
then insert tubing into compression fitting...
Silicone Fill Tubing, insert into PETG Tubing, 1/2" OD x 3/8" ID, ordered from McMaster.com #9245K21
Dip the Silicone Fill Tubing in Dish Soap water
Insert Silicone Fill tubing into the .5" PETG tube before heating the Tubing.
Hold the PETG tubing around 4" above the heat, and keep rotating the PETG tubing over the heat.
PETG tubing is easy to bend by hand, but if you prefer, I made this PETG Tubing Bending Jig, from Acrylic!
I made it from .5" Clear Acrylic scrap from the workshop. For the bends, I used these aluminum PC case feet
Billet PC Case Feet for two different sized PETG tubing bends.
1-3/4" pc case foot diameter,
https://mnpctech.com/pc-computer-stereo-desktop-case-feet/grooved-pc-computer-stereo-rack-server-cas...1" diameter pc case foot,
https://mnpctech.com/pc-computer-stereo-desktop-case-feet/mini-itx-pc-case-feet.htmlPlacing .5" OD PETG Tubing along channel and 1" case foot, to create 90 degree bend.
I could have never done with type of bend with .5" OD flex tubing, without it kinking