if i am bending a 90deg. angle roughly how many mm will the tube increase by ??
2007-11-27 04:56:22 · 16 answers · asked by Anonymous in Home & Garden ➔ Do It Yourself (DIY)
Measure it, bend it, measure it again!
2007-11-27 06:30:59 · answer #1 · answered by Anonymous · 1⤊ 0⤋
If you try to bend 15 mm or 22 mm copper pipe to 90 deg. it will kink and it really can't be done without a pipe bender, you would be better to use a compression elbow which doesn't need soldering, if you have a lot of pipes to bend buy a bender, there are some inexpensive one's on the market or you could get one from your local hire shop,..... just a tip, bend the pipe and then cut it to the size you need.
2007-11-27 13:21:30 · answer #2 · answered by John L 5 · 0⤊ 0⤋
If using a pipebender the center to end measurement increases by approx 15mm. This is what us plumbers call "the gain". As a plumbing tutor, I demonstrate this to my students by cutting a length of 15mm tube 400mm long. They then mark it in the middle (200mm) then put a 90 bend in it. One side will be 200mm center to end, the other will be 215-220mm. Kid colt's answer is on the right track, a lot of other answers are obviously from people who do not know what they are on about. Try it!
Also, it can be bent without a machine, you use a bending spring. To make this easier you can anneal it to make it softer. This means heating it up with your blowlamp then letting it cool naturally.
2007-11-29 05:28:57 · answer #3 · answered by HisNibz 2 · 1⤊ 0⤋
if you are talking about the Increase in length, It will grow.
The increse depends on the size of the tubing you are bending and the radius of the bend.
1/4 tubing generally grows 1/4inch per 90 degree bend
i.e. if you were going put 3 90degree bends in an line with with anoverall length of 12 inches....start with 11- 1/4 inch piece of tubing.
2007-11-27 05:42:45 · answer #4 · answered by KId Colt 2 · 1⤊ 0⤋
Kid colt is correct. but if you want to bend to a measurement then put the measured end in the bender and place a scrap piece of pipe in the bender in the place where the measured pipe will finish up. ie. at right angles to the measured piece, Then slide your measured piece in to position with the center mark in line with the center of the scrap pipe.
2007-11-27 09:05:40 · answer #5 · answered by Anonymous · 0⤊ 0⤋
You will not get a "true" 90 degrees bending copper without crimping it closed..it will be slightly different..If you use an elbow to join 2 pieces..then will it be 90 degrees
2007-11-27 05:48:54 · answer #6 · answered by pcbeachrat 7 · 0⤊ 2⤋
it shouldn't increase, just make sure you use a pipe bender. according to my sources you can also use a spring inside the pipe to bend it without heat. just do it GENTLY.
2007-11-27 06:25:11 · answer #7 · answered by terry c 2 · 1⤊ 0⤋
The outside will get thinner & longer the inside will get thiker & shorter, but the center will stay the same,
2007-11-27 05:14:05 · answer #8 · answered by ger 58 3 · 1⤊ 0⤋
thicker tubing? haha. seriously though, maybe putting pressure on each end of the tube. to 'compress' the tube,
2016-04-06 00:41:46 · answer #9 · answered by Anonymous · 0⤊ 0⤋
I presume you are plumbing or electical ducting? Why not use a 90 degree elbow?
Squashing something will never make it bigger only smaller
2007-11-27 05:07:10 · answer #10 · answered by charlie_t 3 · 4⤊ 0⤋
you do have a rod to put in the tube when you bend it
2007-11-28 10:31:20 · answer #11 · answered by Anonymous · 0⤊ 1⤋