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Old 12-21-2011, 11:40 AM
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DIY Rod heater

Hey everyone. I wanna make a rod heater from some scrap I have kicking around. The best fuel for my location will be propane and I was wondering if anyone can point me in the right direction for tips... http://www.grainger.com/Grainger/LEN...ZL3?Pid=search
I don't know about what size will work best and a good location to buy them from. I want to design it around something like this...
http://www.youtube.com/watch?v=H2YrL...layer_embedded

Seems more than easy enough to do. I have already built a fixture to hold the piston in place and has an adjustable stop on the backside to set the wrist pin depth I am just sick of using the small camping propane torches. I have a regulator, propane tank connection, and a 30lb propane tank and the regulator goes to 1/4"npt female thread that I can adapt to a tee fitting and then run it to the two tips. Thanks for any and all input!

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Old 12-21-2011, 05:02 PM
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When I was a kid in the sixties. I used a propane burner and controll from a junk gas range to supply the heat.

Originally I used my mothers gas range .....didn't set too well with her!!!
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Old 12-21-2011, 05:22 PM
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I use a regular propane torch.
I have a temp stick that melts at 450 and I put a line on the rod starting just below the pin and about 2 inches toward the center of the rod.
When the mark is melted about 3/4 down I install.
I have been doing this way a long time as my store bought heater broke.
Most of the stuff I do is floating so I dont need to do this more than a couple times a year.
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Old 12-21-2011, 06:37 PM
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Quote:
Originally Posted by BOBCRMAN@aol.com
When I was a kid in the sixties. I used a propane burner and controll from a junk gas range to supply the heat.

Originally I used my mothers gas range .....didn't set too well with her!!!
lmao! My mother would not be happy with me at all lol.


I like the idea with the temp marker. I am still curious though as to fittings and nozzle sizes
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Old 12-21-2011, 09:00 PM
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you could make the tips yourself very easy
it just has to have a way for air to enter (siphoned into the back side) of the tip
something like this or these larger ones or get a couple of these and just take them apart
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Old 12-21-2011, 09:03 PM
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Quote:
Originally Posted by matts37chev
you could make the tips yourself very easy
it just has to have a way for air to enter (siphoned into the back side) of the tip
something like this or these larger ones or get a couple of these and just take them apart
hmm... I like that idea
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Old 12-21-2011, 09:25 PM
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i would use 1/8" pipe and put a bell reducer on it
drill some small holes on the back side of the bell for the air to come in
and screw in a short piece of pipe
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Old 12-21-2011, 10:30 PM
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Quote:
Originally Posted by matts37chev
i would use 1/8" pipe and put a bell reducer on it
drill some small holes on the back side of the bell for the air to come in
and screw in a short piece of pipe
So your saying go from 1/8" pipe to a bill that will increase to say 1/4" and drill holes on the 1/8" side to allow air to enter and then create the nozzle using a short 1/4" piece... I know you called it a reducer but it doesn't make sense to go smaller figuring most nozzles are bigger than the line feeding them.
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Old 12-21-2011, 11:11 PM
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Quote:
Originally Posted by zildjian4life218
So your saying go from 1/8" pipe to a bill that will increase to say 1/4" and drill holes on the 1/8" side to allow air to enter and then create the nozzle using a short 1/4" piece... I know you called it a reducer but it doesn't make sense to go smaller figuring most nozzles are bigger than the line feeding them.
correct
i have done this on a little bigger scale
the best way, is to run the threads on the 1/8" pipe (that screws into the bell)
a lot further down, so it screws in to the bell an extra long ways
so it is creating a nozzle inside the bell
helping to siphon the fresh air through the holes you drilled into the angled part of the bell
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Old 12-22-2011, 12:20 PM
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Quote:
Originally Posted by matts37chev
correct
i have done this on a little bigger scale
the best way, is to run the threads on the 1/8" pipe (that screws into the bell)
a lot further down, so it screws in to the bell an extra long ways
so it is creating a nozzle inside the bell
helping to siphon the fresh air through the holes you drilled into the angled part of the bell
What do you think I should start out with air hole sizes? Maybe four evenly placed 1/16" holes?
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Old 12-22-2011, 01:07 PM
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yes, start small and work up
you may want to buy an extra bell, because there will be some trial and error

also the opening in the 1/8 pipe may be too large, and you may have to figure out a way to make it flow less propane

if so,
1) if you made the threads longer on the 1/8 pipe, so that it screws into the bell far enough,
you can screw a 1/8 cap on to the end of the 1/8 pipe, after you screw into the bell
then drill a hole in the cap to make a smaller nozzle
(this is what I did on the torch I built)

or
2) if you can't make the threads on the pipe longer,
maybe make some bolt threads on the inside of the 1/8 pipe and screw in a bolt,
then cut off the head and drill a small hole in it, to make a nozzle

these will move the nozzle farther into the bell
creating more of a siphon effect for the fresh air
less likely to flame comming out all over
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Old 12-23-2011, 09:24 AM
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Quote:
Originally Posted by zildjian4life218
the regulator goes to 1/4"npt female thread that I can adapt to a tee fitting and then run it to the two tips.
been thinking about this, and
I am sure you could start with 1/4 and use a bell to go up to 3/8 or 1/2
I think this would be better

after thinking about it, the flame you would get from 1/4 pipe (on the big end)
would be too small

you will have to reduce the size of the propane orifice inside though,
1/4" in the small end is way to big, unless your regulator is super low pressure
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