Chamfer Help

[GeorgeDouj88]

Simple question, so I've had most of the parts for the first PC I'm gonna build and I'm custom hardline cooling it and I about 2 weeks left until my case would arrive so I decided to do a test tubing bend, cut, chamfer, and try screwing an end into a fitting. Everything went well, although I do need to improve on my tube bending, but the one thing that I had a problem with was chamfering. The tool I got sucked I went out and got 1,000 and 1,500 grit sandpaper and that seemed to work very well but I could only sand the outside edge with it so my question is, because the O - Ring in the fitting only touches the tubing by the outside edge (which is slanted after chamfering) then do I still need to chamfer the inside. I'll give some pics and help is appreciated

[W-L]

1 hour ago, G3ORG3Douj88 said:

Simple question, so I've had most of the parts for the first PC I'm gonna build and I'm custom hardline cooling it and I about 2 weeks left until my case would arrive so I decided to do a test tubing bend, cut, chamfer, and try screwing an end into a fitting. Everything went well, although I do need to improve on my tube bending, but the one thing that I had a problem with was chamfering. The tool I got sucked I went out and got 1,000 and 1,500 grit sandpaper and that seemed to work very well but I could only sand the outside edge with it so my question is, because the O - Ring in the fitting only touches the tubing by the outside edge (which is slanted after chamfering) then do I still need to chamfer the inside. I'll give some pics and help is appreciated

You can use coarser sand paper if you want as it will go a lot faster with the chamfering but for the interior you should at the very least do an edge break to remove any sharp burrs or edges.

 

Primochill makes a chamfering bit that works really well if you are doing a lot of tubing. 

https://www.primochill.com/products/primochill-rfb-rigid-tubing-finishing-bit

[airdeano]

chamfering the outside diameter reduces the chance of the sharp edge of the tubing from cutting/damaging the o-ring sealing properties.any small nick in the o-ring is a best chance for a leak. chamfering the inside diameter after cutting, reduces the risk of chards of tubing floating inside the system. chaffering also allows the fitting to sit square on the tubing not at an angle (creates bad sealing practices).