Custom loop tubing

You can buy prebent tubing in glass,metal, acrylic, petg
Though you'll pay more
And will waste more as the bend won't be exactly where you want it
Ie there will be excess tubing after the bend
You will need to cut off
Unless you're very lucky indeed

Edit
Some are acrylic
Some pmma/petg
Some actually are glass those need to be more careful
Cutting
And some are metal
 
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PETG is fine tbh.. as long as you don't allow the water temp to reach a certain point, else it'll start warping.

PETG is easier to bend and work with, but PMMA/Acrylic is far better/clearer and a higher heating/boiling point.

I don't use a bending kit.. corner of a table, chair leg or tiled floor is what i use, and an RFB drill bit for chamfering/cleaning
 
im4gine3 said:
PETG is easier to bend and work with
Click to expand...
A myth perpetuated by the same people who decided to force that PETG junk on us in the first place, IMO. I mean look at all the "it doesn't shatter" nonsense that was going around with idiot "influencers" hitting tubes with hammers.

Acrylic takes about 30 more seconds to get to malleable temperature than PETG. Hell, in my experience acrylic is easier to work with than PETG because of the extra time required to heat things up. You can control it better, you have a larger window to test malleability, and it can handle multiple reheats if you didn't quite nail your final angle and need to tweak.
 
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LePhuronn said:
A myth perpetuated by the same people who decided to force that PETG junk on us in the first place, IMO. I mean look at all the "it doesn't shatter" nonsense that was going around with idiot "influencers" hitting tubes with hammers.

Acrylic takes about 30 more seconds to get to malleable temperature than PETG. Hell, in my experience acrylic is easier to work with than PETG because of the extra time required to heat things up. You can control it better, you have a larger window to test malleability, and it can handle multiple reheats if you didn't quite nail your final angle and need to tweak.
Click to expand...
i found PETG easy to work with in terms of bending when i did it for my Jonsbo build.. the only issue i had with it was over-heating so bubbles formed more easily.. had this issue a lot when using Alphacool tubing.. but then i switched to Bykski Acrylic and thats been a breeze too.. just a bit longer under the heat
 
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I might get a length of PETG and see how tightly I can bend it. I've have two runs in a current project that need extremely tight bends that I can do with acrylic but are slightly deformed. They don't impede flow and are essentially hidden so what I have now isn't an issue, but my brain is a perfectionist even if my manual dexterity and eyesight doesn't actually enable it :P
 
im4gine3 said:
PETG is fine tbh.. as long as you don't allow the water temp to reach a certain point, else it'll start warping.

PETG is easier to bend and work with, but PMMA/Acrylic is far better/clearer and a higher heating/boiling point.

I don't use a bending kit.. corner of a table, chair leg or tiled floor is what i use, and an RFB drill bit for chamfering/cleaning
Click to expand...

Same here... I was reading this thread thinking there are bending kits? I just bend them by hand and eye.

I either cut them with my chop saw (high RPM and a really slow cutting speed are key if you haven't tried) or with a hacksaw if it's late in the evening/night. I initially tried one of those pipe cutting tools (similar to the plumber tools for cutting copper) and it was utter *****. One of those reaming tools, however, is brilliant for cleaning up the tube ends.

Water also makes a great lubricant for the silicone insert, which nobody ever seems to do and then complains that they can't get their insert out of a simple 90° bend.
 
LePhuronn said:
I might get a length of PETG and see how tightly I can bend it. I've have two runs in a current project that need extremely tight bends that I can do with acrylic but are slightly deformed. They don't impede flow and are essentially hidden so what I have now isn't an issue, but my brain is a perfectionist even if my manual dexterity and eyesight doesn't actually enable it :P
Click to expand...
I’d go as far to say if you are starting out to use PETG and practise as it’s more forgiving then move over to acrylic.
But that’s just me
 
aaronyuri said:
Same here... I was reading this thread thinking there are bending kits? I just bend them by hand and eye.

I either cut them with my chop saw (high RPM and a really slow cutting speed are key if you haven't tried) or with a hacksaw if it's late in the evening/night. I initially tried one of those pipe cutting tools (similar to the plumber tools for cutting copper) and it was utter *****. One of those reaming tools, however, is brilliant for cleaning up the tube ends.

Water also makes a great lubricant for the silicone insert, which nobody ever seems to do and then complains that they can't get their insert out of a simple 90° bend.
Click to expand...
Water and a dab of washing up liquid for me.. especially if I need to reinsert with a tube already bent
 
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