Bend Pipe to Spiral Coil

Here's one we made earlier... Top tip at the foot of the post.
Del

I have done a copper coil also, although I used table salt instead of sand to fill it because I was worried all the sand might not come out.

If you could find a copper coil shaped like the incense, you should be able to attach the outside end to the floor and pull up on the center.

Good luck.

Two flat 12" round plates (can be made out of 1/4" plywood), small 1" round plate, all with a pilot hole in the center. Sandwich the small plate between the larger two with a bolt and wind 1/4" copper tubing around spool. Remove bolt and plates, pull up on center of coil. Wallah !

I think I need to concrete a truncated cone, and then bend the pipe around the cone

Voila!

Its French!!!

You'll never approach the efficiency of a modern device...wood isn't cheap

http://www.northlanddistrib.com/Indoor-Wood-Boiler_c_412.html

Wood is indeed not cheap even if you cut your own.

New Mexico kind of amazed me, not a wealthy state yet coal in every highway cutbank and no one burning it.

If the coil is installed into a wood stove and connected to a pressurized (50 psi or so) water heater, then steam can be produced in the system. If this happens then a very very unsafe situation exists. The T & P valve will open, but if it fails, then the vessel will split and can explode. All wood fired hot water heaters can make steam, so they aren't for everyone. The old timers used a system that worked on thermo-siphon, and were not pressurized. (an open system).

Last section of copper I bought came in a cardboard box like so

except it was coiled all the way to the center.

Open box, step on outside end, pull up inside one.

e'voila!

Shazaam!

I use to burn wood, and heat the whole house and hot water.Made my own wood boiler and connected it to my oil boiler.also had controls for air for the fire and controls for the cirulators, and the dump zone. Really ,a new boiler hi eff. cost less to run then wood and is safer. I know, you get the wood for free. TIME. Get a part time job a few bucks a day, and you will save yourself alot of hard work.

Done that.been their

John

I don't know what size you want to coil? For small diameter

copper tubing it might be possible to shape them as coils by

1 directly winding them around a slowly rotating

piece of cylindrical pipe or shaft held in a chuck, either on a lathe or some kind of other prime mover.

2 to prevent snapping you can fill the closed-end(plugged) bare tube with water and leave it

in the freezer overnight so that water freezes in the tube. Take it out of the

freezer and wind it onto the rotating shaft either by hand or through

an attachment, just like coil springs are made.

www.alambiques.com/alambiques.htm