Siphon nozzles are expensive

[Tony]

Would a paraffin sprayer run off a compressor work for burning glyc?

[Jamesrl]

Dunno, try it.

[julianf]

Tony,

there's an american seller, on ebay, who works out a couple of quid cheaper than the uk distributor, but i think you would either need to chance it, or buy both the nozzle and the holder separately, so as to be under the per-parcel customs threshold.

alternatively, when im feeling flush, i may be interested in buying from america at the same time as you, in which case we could just suffer the parcelfarce fee together (split it 5050)

[therecklessengineer]

You might like to research a spinning cup type burner.

[photoman290]

you  could use a peristaltic pump on a spike type burner. once they are hot they will burn anything.

[Tony]

Spinning cup looks interesting.  What's a spike type burner?

[photoman290]

spike burner.
http://spicrosoft.com/Heater/Heater1.htm

[Tony]

Oh those, I hadn't made the connection but I've seen his page before, essentially a thermal inertia system,   I don't think it would get through enough fuel for me

[Chug]

Is this the delavan siphon nozzle you are looking at?

how about a paint spraygun?

[Tony]

Yes the Delavan, the nozzle and adapter come to about £50 plus customs duty.  Eeek!

Can't find much in the way of UK alternatives.  I'm lead to believe that some torpedo space heaters use siphon nozzles though - might be able to pick up spares for them?

Also thought abut the paint sprayer route, my concern is that spray paint is quite thin and it won't like glycerol, and the spray is more droplets rather than atomised.

[Julian]

If you want to pick up oil / bio / glycerin and spray it using compressed air, why not start at basics with something similar to this (you must remember them from art classes at school and all the mischievous things for which they could be used) ...

http://www.pegasusart.co.uk/1433/Pegasus-Art-Supplies-Spray-Diffuser---Mouth-Atomizer.html?referrer=froogle&gclid=CIj32YzM0b8CFfMgtAodRhIAsQ

Modify it to achieve what you want.  You could make a few dozen different prototypes for what a nozzle from the States will cost.

[Jamesrl]

If you want to pick up oil / bio / glycerin and spray it using compressed air, why not start at basics with something similar to this (you must remember them from art classes at school and all the mischievous things for which they could be used) ...

http://www.pegasusart.co.uk/1433/Pegasus-Art-Supplies-Spray-Diffuser---Mouth-Atomizer.html?referrer=froogle&gclid=CIj32YzM0b8CFfMgtAodRhIAsQ

Modify it to achieve what you want.  You could make a few dozen different prototypes for what a nozzle from the States will cost.

Ah! The Bernoulli effect.

Been there done that in 1969 using hypodermic needles for ulta fine spraying and also tried it with bio with moderate success, perhaps I should revisit burners.

The problem with the method was igniting the atomised bio, if you could keep it going long enough to to get a chamber glowing it worked a treat.

[knighty]

to light it, look for an old steam cleaner (pressure washer with a diesel burner built in)

they produce a pretty impressive spark/ark across the electrodes, and they're made to run all the time the burner is on, not just for lighting

(I think central heating oil burners turn the electrodes off once it's lit?)

[Tony]

Interesting.  This sort of thing?

http://www.ebay.co.uk/itm/Industrial-steam-cleaner-diesel-K-E-W-1502V-/141346828925

I've got plenty of brake pipe to tinker with, so the Bernoulli effect may have to be played with!  Assuming my compressor can keep up with it, of course (that's the advantage of the Delavan nozzles, they're very efficient on air-flow.

I gave away my old Neon Sign Transformer, that would produce a decent arc between two bolts full time without any issues.  I'll ask the guy I gave it to if he ever got around to using it, maybe I can get it back

[Julian]

Tubes don't have to be at right angles (although it's probably the easiest arrangement).

I made a little sand blasting gun using a "T" piece.  I had an air supply tube on a rubber olive sliding in the top of the T and a hose to pick up sand on the vertical section.  It worked pretty well.  You could adjust the sand volume by sliding the air pipe in and out.

Would a rewound microwave transformer work for the ignition?  You can rearrange them to make spot welders and the like, but I think they are quite dangerous if left as fitted!