hi mate, have a look around a plumbing or air con suppliers l have a small set of copper pipe benders that will bend pipe from 3/8 id down to 1/8 if all else fails anneal the pipe pack it with fine sand then bend it round a curve. the sand should stop the pipe from flattening and creasing. This may take a little bit of practise.
good luck. Jim

You can bend larger diameter pipes by filing them with sand and block the ends off once full. I am sure the same principal can be used for smaller sizes so why don't you try it. Bend it around a former the radius/dia you want to end up with if that is possible. Good luck. Cheers Ian 👍

Brass or copper? For all my railing I use solid rods not tubing. You can anneal the tubing depending on the radius of the bend needed. Use a piece of pipe the size of the radius. Bend slowly or you will get dimples.
What size radius are you bending.
Also by a brake line tubing bender, they are cheap on amazon

Thanks for insight fella’s those are both good idea’s, I also came across the idea to plug one end fill with water and put it in the freezer for 36 hours and then bend. I might give this a try as I need to keep the inside tubing clean as I will be running a flexible pushrod through it.
All great idea’ though!

Cheers Michael

I bend 1/25 tubing. I crimp one end and add sand in the pipe forcing it down crimp the other end and bend. Of course the tibing was more than I needed so the excess was cut off. This this for a super heater/dryer on my steam boiler. Another thing to consider is if you are using brass or copper tube is to aniline the tubing first to make it softer. Heat the tubing up the quench it in cold water. The solder idea is good, just experiment and have fun😊

I usually block one end with a wooden plug then fill with molten solder let it cool, then bend to shape, finally heat up to melt solder
If your using brass or copper tube then its best to anneal it first
I've used this method up to 6mm brass tube. see picture solder still in 4mm tube