Micro Burner

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John,

Many thanks for this ... Yes please; a photograph would be very useful.

The aquarium pump sounds a good idea, for my 'gentle flame' requirement

... [does the gas degrade any of the components ?]

MichaelG.

Edited By Michael Gilligan on 25/08/2017 08:27:48

Pure gas off the end of a needle does not stay that small. This is a 1.3mm OD needle on prop/but mix.

Only times I've needed a small flame I've used a blowpipe. Has anyone looked at the disposable gas ciggy lighters ? A small steady flame and seems very simple arrangement.

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Good show, Jason.

Seems to confirm that a Tinyreg and a small needle might be required.

I've had no reply from Bullfinch yet ...

They're probably waiting for suitable words from their 'product liability' Lawyers.

MichaelG.

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Useful thought, Gordon ... 'though in the present context that would be quite a large flame.

MichaelG.

Michael, I was turning the regulator up and down in the video, it's only a cheapie from e-bay but gives very fine adjustment. I can get a consistant small flame but not really sure if it will be hot enough for your needs due to teh flame size getting larger as soon as you wind up the gas.

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Sorry, Jason ... I had assumed you were just using a tap, not a regulator

I have yet to find any reference to the pressure required for these microburners, but it's looking like either an Acetylene generator, or a mini-Gasometer might be the best answer.

I do have a very high spec. 'precision' regulator available, but I don't think it's designed for fuel gasses.

MichaelG.

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http://chestofbooks.com/home-improvement/repairs/Mechanics-Household/Types-Of-Acetylene-Generators.html

Edited By Michael Gilligan on 25/08/2017 15:27:54

Hello Michael,
Attached is a photo of my small torch set-up. The needle is just cut off square. The dark mark in the small delivery hose is just a joiner. The nozzle of the large torch just pokes into the compressors inlet without any sealing. The piece of wire attached to the gas valve is an indicator so you can open the valve to the same position every time. Acetylene is supplied at 15 psi through a regulator. The compressor still works OK after 15 years but it has not been overworked.
I don't think the set up would work with propane, its flame speed is so low the flame would not hold on to the needle.

Hello Jason,

I did not put the hypodermic needle onto the large torch's hand piece because the handpiece and its hose are cumbersome for the job. I used the compressor so as not to interfere with the big torch's mixing of the air and acetylene - I may well be romancing in a fools paradise.

Regards, John

Thanks for the photo, and comments, John

... More food for thought.

MichaelG.