[AT] More on torches

[Cecil Bearden]

Charlie:
I used to us a carbon arc torch for cutting cast iron when scrapping old 
broken blocks, etc.

Cecil

On 3/11/2016 9:27 AM, charlie hill wrote:
> There is a version of that that uses a carbon rod in a welding machine and
> compressed air.
> It cuts well, almost as well as it creates light and noise!
>
> Charlie
>
> -----Original Message-----
> From: Bill Brueck
> Sent: Thursday, March 10, 2016 6:58 PM
> To: 'Antique tractor email discussion group'
> Subject: Re: [AT] More on torches
>
> I've always wondered why there isn't a cutting torch available that uses 3
> gasses: fuel (acetylene, LP) and oxygen for the heat part, and common air
> from the compressor to blow the metal from the cut.  Maybe that's available?
> Probably that's a dumb idea because...?
>
> B²
> Bill Brueck
> Pine Island, MN, USA
>
> -----Original Message-----
> From: at-bounces at lists.antique-tractor.com
> [mailto:at-bounces at lists.antique-tractor.com] On Behalf Of Greg Hass
> Sent: Thursday, March 10, 2016 2:49 PM
> To: at at lists.antique-tractor.com
> Subject: [AT] More on torches
>
> A while ago we were talking torches plus LP vs. acetylene. I was having
> coffee today at the local coffee shop and one of those there owns a welding
> shop. The subject of LP vs acetylene came up. He said that the ratio of
> acetylene to oxygen when cutting is about 1 to 1. When using LP he said the
> ratio is roughly 7 parts oxygen to one part LP so he said its way to costly
> to cut with LP. One exception he noted was his flame table. He  might put a
> sheet of one inch plate steel on it and it will follow a pattern and cut
> exact sprockets for use by our local sugar beet company. Right now he said
> 90% of his work is for them. Anyway, he said LP works better on the flame
> table because as it cuts the very outside edge of the sprockets are
> hardened. When I asked him why he said he doesn't really know, but that is
> the way it is. He said he has about two dozen tanks around the place and on
> his trucks. Also he said that on the job LP takes a lot longer to heat
> before cutting where as with acetylene you can start cutting in a few
> seconds.
>          Greg Hass
>
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