Reddit mentions of BernzOmatic Basic Use UL2317 Brass Pencil Flame Propane Torch Head

propane and butane and the mixture of the two gasses have the exact same combustion temperature with air.

http://www.engineeringtoolbox.com/flame-temperatures-gases-d_422.html

the combustion of propane and butane is an oxidation reaction, thus a more complete oxidation to CO2 is actually a good thing. neither propane or butane is more susceptible to incomplete oxidation than the other.

properly functioning propane and butane torches producing ideal burns present no danger of carbon monoxide poisoning.

http://www.propane101.com/carbonmonoxideandpropane.htm

as long as sufficient oxygen is present (the 21% present in the atmosphere is more than sufficient) both propane and butane are safe to use.

on a side note, a propane torch like the one linked below is much better built and thus safer to use than the crème brûlée butane torches most people use.

http://www.amazon.com/BernzOmatic-Basic-UL2317-Pencil-Propane/dp/B00008ZA0C/ref=sr_1_7?ie=UTF8&qid=1451884928&sr=8-7&keywords=bernzomatic+propane

I got a 2-pack of propane tanks as well as a torch tip for under $20 total. Burns hotter and will last much longer. You can get a self-igniting tip if you prefer for only a couple dollars more.

A torch is better for this because a soldering iron concentrates the heat in a very very small area. And since metal is so conductive and has a high thermal mass, it looses heat faster than you can apply it with a soldering iron, so it will never get hot enough to actually solder. Flux comes in a paste (or sometimes liquid) and is a weak acid that etches the metal to clean and roughen the surface so the solder wets to the metal and bonds better. It also helps keep air out of the connection to prevent oxidation while you're soldering, which would weaken the joint.

The steps would be to clean each piece, position or clamp them together, apply a good amount of flux, heat it all up with the torch, then touch the solder to the hot metal so that it melts on. If you need to apply heat directly to the solder (ie, the solder doesn't melt on its own when it touches the metal) then your metal isn't hot enough and it will make a cold solder connection that will be weak, or completely non-existent if it's too cold. It may look like it joined things, but the smallest bit of force (even from just normal handling) would break the joint and you would need to start all over by first cleaning off all the solder, then cleaning the metal, applying flux, and trying again.

Here's the torch I use:

Torch

Fuel

Optional extension hose so you don't have to hold the cylinder the whole time

Solder and flux. This kit comes with some emery cloth to clean the metal a bit before soldering.


EDIT: Here's a video about soldering copper pipe. Same process for small sheet metal parts.

brass pencil flame torch + propane tank might be cheaper than a creme brulee torch + you can do dabs with it

If I wanted to make a propane forge could I use this propane head ( http://www.amazon.com/gp/aw/d/B00008ZA0C/ref=pd_aw_sbs_2?pi=SL500_SS115&simLd=1 ) and just attach it to the side of the forge or do I need something like a trigger start torch ( http://www.amazon.com/gp/aw/d/B00008ZA09/ref=pd_aw_sbs_3?pi=SY115&simLd=1 )?

I know this is a dumb question but I'm on a budget for my starter setup

EDIT: OK, I went back and looked at the torch I bought, it says Propane only. I returned it and and got a Berzomatic TS8000

Ok, thanks for the replies!

I picked up this flux: Harris SSWF1 Stay Silv Brazing Flux, 1 lb. Jar, White https://www.amazon.com/dp/B002075B0U/ref=cm_sw_r_cp_apa_i_790RCb2K2T97F

^(And this torch head: BernzOmatic Basic Use UL2317 Brass Pencil Flame Propane Torch Head) ^(https://www.amazon.com/dp/B00008ZA0C/ref=cm_sw_r_cp_apa_i_N.0RCbY4860NK)

^(And did buy propane, but it was only like $6 for 2 camping cans so no big loss.)

I'll grab a can of MAPP.

I assume that because it's only 12 gauge wire and a 20 gauge "solder" it won't take long at all to heat up. As I understand it:

• Clean everything thoroughly. I'll use sandpaper and fine stainless steel brushes.
  
• Apply flux to wires Heat wire until red hot.
  
• Heat "solder" a bit and dip in flux
  
• Heat wires a bit more and touch solder to area.
  
  I've also seen people cut little bits of the soldering wire and place it on the target, then heat the wires until it flows. Is that incorrect?
  
  Thanks again!

THIS is very similar, if not identical to, the torch head I used.

I'm interested in building one of these. About how long does one of these cans last in one of these?

Also, would one of the basic use BernzOmatic Basic Use Pencil Flame Propane Torch Head work with one of these, or does it need to be one of the higher-intensity torches?

I like my orca torch very much... I upgraded from using a basic propane torch attachment (https://www.amazon.com/BernzOmatic-Basic-UL2317-Pencil-Propane/dp/B00008ZA0C/) on a regular small green propane tank.

Good hardware store might have one, any pluming supply store, online .

http://www.supplyhouse.com/Taco-334-3-Taco-Cast-Iron-Pressure-Reducing-Valve-Dual-Control-Sweat

learn how to solder pipe. lots of Utubes out there, you don't need a fancy rig for homeowner stuff, this is good enough for homeowners.

https://www.amazon.com/BernzOmatic-Basic-UL2317-Pencil-Propane/dp/B00008ZA0C/ref=sr_1_6?ie=UTF8&qid=1481992375&sr=8-6&keywords=propane+flame+torch

Basically clean the fitting with a fitting cleaning brush, clean the pipe with plumber sandcloth, flux the inside of the fitting, the outside of the pipe, assemble, apply heat , when the flux stops boiling apply the solder to the opposite side of the heat and let it run around.

Don't over heat the fitting if the flux turns black you got it to hot, I usually move the flame around a little when heating the fitting.

If making up adapters solder them to the pipe ( short piece ) before screwing them to the valve.

Buy some extra pipe and fittings and practice, ells are pretty inexpensive, practice on them.

Here is the desktop version of your link

you are overkilling it for that little furnace. You could just use a propane tank and burner from home depot like in that imgur album. You dont need to go crazy with it if that small. you will focus the heat on the little crucible and the wool will hold in the heat. so you wont need to make a burner or use a 20lb tank to melt an oz or two of metal. you could buy a 15.00 bernzomatic setup and start on this right away.

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also - maybe look into spin casting (centrifugal casting) as that's the right method for casting precious metals into smaller shapes like a ring. its kinda different and comes with its own way of doing things that means different PPE than typical metal casting.

Would a torch like this work? or this one?