| Furnace burners potentially create more
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| | effective, but there are some components
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| than enough problems for the hobby metal
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| | incorporated in the design that only
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| casting worker, it is not unusual to read
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| | require basic lathe turning skills. But
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| about people who are attempting to build
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| | general workshop knowledge is sufficient
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| a furnace, only to be confronted with
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| | to build this item. There's no rocket
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| problems and frustration with a complex
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| | science involved.The blower consists of a
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| burner?
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| | second hand household vacuum cleaner (the
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| It is quite simple to construct a
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| | type that has a second outlet for the
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| crucible furnace, but the stumbling block
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| | hose connection that blows). The vac also
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| seems to be: "The burner". Why?Problems
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| | has an electronic vari motor speed
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| seem to manifest themselves because:For
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| | control, which enables a regulated
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| some reason, people choose to fabricate
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| | low-volume airflow to be delivered during
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| complex burners from detailed drawings
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| | the burner start up phase.This feature is
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| without the skills, tooling and machining
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| | MOST important during the furnace start
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| facilities in which the original designer
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| | up.Does this burner work? You bet it
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| employed during the design & building
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| | does, the burner is capable of melting a
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| process.With the necessary workshop
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| | 5 Kg (11lbs) charge of Aluminium from a
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| skills coupled with a reasonable
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| | cold start in less than 40 minutes.The
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| selection of equipment & tools, will have
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| | gas supply is provided from a Liquid
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| a marked effect on how well you, as a
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| | Petroleum (LP) cylinder (Propane in the
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| hobby foundry worker, will be able to
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| | states) It is essential that the gas
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| construct the equipment required for the
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| | supply be controlled by an adjustable
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| successful melting of metal.There are no
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| | industrial diaphragm gas regulator gauge
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| short cuts when it comes to building
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| | suitable for LP gas, there is no other
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| equipment for your hobby foundry, to
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| | SAFE way to regulate & deliver fuel gas
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| cobble something together in a rough
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| | to a furnace burner. A ball valve should
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| fashion is only asking for trouble in the
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| | be installed in line as an emergency shut
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| future, it is well to heed the old trade
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| | off valve.There's no reason to build &
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| school teacher quote:
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| | operate complex burners that require
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| "If a job is worth doing, you might as
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| | special size jets, and shrouds, which
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| well do it properly in the first place"
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| | must be operated at a certain gas/air
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| He is right, you know.You can learn how
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| | pressure? There is nothing more
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| to build an effective simple furnace
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| | frustrating than an apparatus that won't
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| burner, which is well documented in the
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| | operate as it should; why spend half the
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| hobby foundry ebook "Metal Casting Made
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| | day mucking around with something that is
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| Easy" available at our web site. But to
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| | an absolute pain to use, when you should
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| explain everything in detail here would
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| | be enjoying your metal casting
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| take up far too much time &
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| | experience!The people who design & build
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| space.Following is a simplified
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| | complex burners for other's to copy,
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| description:The burner consists of a long
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| | possess lathes, milling machines and many
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| plain black mild steel pipe. The burner
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| | other expensive machine tools to build
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| end nozzle consists of an inverted cone.
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| | the burners, but if you choose to build
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| There is a mid section where a venturi is
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| | it even slightly different to the
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| installed; the gas jet is located near
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| | original design specs, there is a good
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| the venturi.The simple brass jet
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| | chance the burner just wont work
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| protrudes into the forced air stream,
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| | properly!To learn more about building
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| which travels through the burner tube.
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| | hobby metal casting tools and equipment,
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| The gas jet orifice is quite large and
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| | visit:
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| operates under low pressure; the air
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| | A rich info resource centre for the
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| delivered by the blower to the burner
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| | hobby metal caster.This article may be
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| tube is low pressure, but moves at a high
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| | reproduced as long as the URL links and
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| volume.The burner design is simple, yet
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| | reference remain.
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