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Tool Talk Discussion Forum

Propane cutting torch

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Bonnan

04-01-2006 17:36:59

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I want to switch from ox/act to ox/propane and my torch is a Harris Model 43-2 with a new propane tip. Will this work? Anything else should I beaware of? Haven't been online for a long time but good to see some familar names.

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david e stephenson

04-04-2006 10:50:44

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Re: Propane cutting torch in reply to Bonnan, 04-01-2006 17:36:59

i switched over in the late 70,s to lp but i put flash back adapter on my torches for my personal protction and have used lp in several factory settings. lp is a lot hotter than acy. check with the place where you brought it and they should be able to set you up safely.

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buickanddeere

04-04-2006 13:47:57

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Re: Propane cutting torch in reply to david e stephenson, 04-04-2006 10:50:44

LP is not as hot as acetylene's combustion temperature. What you may have had however was a much larger tip that flowed way more LP/oxygen than the acetylene/oxygen tip and produced more btu's.

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woodache

04-03-2006 15:10:30

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Cut using Ox/Gasoline fuel Re: Propane cutting to in reply to Bonnan, 04-01-2006 17:36:59

http://www.ytmag.com/cgi-bin/viewit.cgi?bd=toolt&th=151357

gasoline cutting torch

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Bonnan

04-02-2006 19:35:18

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Re: Propane cutting torch in reply to Bonnan, 04-01-2006 17:36:59

Thanks guys for the input; like many things in life nothing is clear cut. The older the you get the harder it is to change but I'm trying.

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frankiee

04-02-2006 13:18:36

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Re: Propane cutting torch in reply to Bonnan, 04-01-2006 17:36:59

Used propane for about 7 years in the scrap yard I worked for.
Heard that propane was heavy and could hide in places.
I loaded a dry puddle in an open area on a day of a gentle breeze.
Let it sit for about 10 minutes then went and sniffed the air at standing height.
Could not smell any propane at that time.
Lit a stick and rag on fire and threw it into the dry puddle and sure enough, the propane ignited in the puddle where I had just sniffed.
At the scrap yard there use to be this rule that if there was ever a leak that we could not cut in that area for a day.
I'm sure you know this, but I am just restating a precaution for use with propane.
I personally don't have cutting torches at this time. If I do get any in the future, It will be acetylene just because I don't like the way propane can hide. I work on the ships and never see it on board because of that.
Not trying to sway you, just my 2 cents

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Tim Casbolt

04-02-2006 11:30:26

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Re: Propane cutting torch in reply to Bonnan, 04-01-2006 17:36:59

I've been using oxy/propane for nearly 20 years. The flame sticks out a lot further, but you get used to it. As far as cost, I think the fuel is a lot cheaper than acetylene, you don't have the rental or maintenance fees on the tank, and I doubt there is much difference in oxygen useage. Never noticed any change in my shop. Someone told me once there can be some sort of problem with switching the hose from propane back to acetylene, so you might want to check with a welding supply dealer if that ever comes up.

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Stan in Oly, WA

04-02-2006 03:45:09

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Re: Propane cutting torch in reply to Bonnan, 04-01-2006 17:36:59

Hi Bonnan,

For the most thorough explanation of cutting with oxy/propane ever posted on this forum, go to the archives and find this message:

Posted by Mark Kw on May 27, 2001 at 06:12:59 from (216.37.229.149):
In Reply to: Cutting torch kit posted by Steve in CT on May 24, 2001 at 10:09:03:

Sorry I don't know how to do it as a URL for you to click on, but I can assure you that it's worth your time.

All the best, Stan

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buickanddeere

04-01-2006 21:11:44

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Re: Propane cutting torch in reply to Bonnan, 04-01-2006 17:36:59

Your fuel costs will go down with LP and your oxygen costs will go up. Plus the flame temp will be cooler.

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4010guy

04-02-2006 00:00:59

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Re: Propane cutting torch in reply to buickanddeere, 04-01-2006 21:11:44

well i have used both for years and yes for what you save on sedilean you will lose on oxegen ...for my money i would say save the LP gas for grilling steaks

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jack12345

04-01-2006 20:47:32

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Re: Propane cutting torch in reply to Bonnan, 04-01-2006 17:36:59

I have a Sears propane cutting torch and wanted to use ox/act.tips are all I changed ..propane tips allow more fuel flow.

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tompepper

04-01-2006 19:09:40

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Re: Propane cutting torch in reply to Bonnan, 04-01-2006 17:36:59

I changed my harris over to propane.you say you already have a l'p tip,thats good.on mine there is a small screw on the back of the head.in there is what they call a mixer,i believe.if yours has it it will need chaned to a l/p mixer.on my victor all i had to do is put the tip on.everything else should be ok.a 20# tank last it seems forever.

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Dave NE IA

04-01-2006 18:07:49

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Re: Propane cutting torch in reply to Bonnan, 04-01-2006 17:36:59

I think you are ok, be aware that you will probably save alot of money. Best let some one that knows for sure weigh in, My thinking is probably 99% correct, just don't trust my memory and all. Dave NE IA

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Greg_Ky

04-01-2006 18:06:11

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Re: Propane cutting torch in reply to Bonnan, 04-01-2006 17:36:59

The only thing is if you have the correct inlet fitting on the regulator, you may need an adapter. Greg

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Ken Macfarlane

04-04-2006 10:06:01

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Re: Propane cutting torch in reply to Greg_Ky, 04-01-2006 18:06:11

I went propane hmm, 8 years ago to save on tank costs plus I don't like having acetylene laying around.

It burns a bit colder so it takes longer to preheat using more oxygen during this stage.

Uses the exact same amount of oxygen once you're cutting.

I get about 10 four cubic ft oxy cylinders to a bbq tank. I know I should move up to the bigger cylinders but the little ones are easy to carry in and out of the garage. Yeah, I have a cart but the door of the shop is sort of out of commision to prevent thefts.

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