[pianotech] CA fume fan

[Nicholas Gravagne]

Rex -- thanks for this hose idea and photo. The thing looks pretty cool
actually. We need a clever name for it now. Just to be clear, it is the
unit in the photo which is "set outside a door or in a window" while the 4"
"flexible hose is held close to the pins while gluing..."

So, you actually use one hand to hold the hose while applying CA with the
other, right? BTW, a note to us all, a flexible dust collection hose
behaves more like a slinky; it bends and moves very nicely. Don't confuse
all 4" dust collection hoses as truly flexible ones.

RE "The reduction of the size of the fan housing to the size of the hose is
supposed to create a vortex affect that increases the air flow as compared
to what the fan would normally pull in an 8" duct."

Yes, airflow increases at the smaller diameter hose (also creating a
"pulling" force just behind it), but at the expense of air pressure which
then decreases. But I would think that increased airflow is what we would
want anyway.

Rex, could we possibly press you for a photo of your storage unit and hose?

In any case, thanks again.

NG

On Mon, Feb 13, 2012 at 1:16 PM, Rex Roseman <rosemanpiano at gmail.com> wrote:

>
> This is my second try at replying. I never saw the first come through and
> think it was because the attachment was to large. I apologize if this is a
> duplicate.
>
> To help with the fume problem, I created a device made from standard duct
> work, a round duct booster fan and a length of 4" flexible shop dust
> control
> tubing (about 10-12 feet). The fan was the largest that I could get (8")
> and
> reducers were used to get the diameter to 4" for the flexible hose. At the
> other end, a floor vent adapter was fitted so that the fan was farther back
> from the opening of the unit and so that the unit would sit flat. An
> electrical box was attached to the side and was wired to a 3 prong plug. It
> turned out to be less expensive to by a long, heavy duty extension cord and
> cut the end off then to buy the wire and plug. The hose is stored in a
> plastic storage box with a lid and the exhaust unit sits on top.
>
>
>
> The unit is set outside a door or in a window and the flexible hose is held
> close to the pins while gluing. It is extremely quiet (I have to feel the
> end of the hose to tell if it is running). The reduction of the size of the
> fan housing to the size of the hose is supposed to create a vortex affect
> that increases the air flow as compared to what the fan would normally pull
> in an 8" duct.
>
>
>
> My experience has been that there is no problem with vapors either to
> myself
> or left in the house. If I forget to move the hose along with the gluing,
> the vapors bother my eyes immediately. My vision is poor, so I tend to have
> to work close to the pins to see what I am doing. Without this unit, it
> would be impossible to do this job. I also hover the hose back and forth
> over the pins after I am done to try and get the last of the fumes out as
> the glue dries.
>
>
>
> Hope that this helps to get some creative juices flowing with other ideas
> to
> help with this job.
>
>
>
> Rex Roseman
>
>
> The message is ready to be sent with the following file or link
> attachments:
>
> CA fume fan.jpg
>
>
> Note: To protect against computer viruses, e-mail programs may prevent
> sending or receiving certain types of file attachments.  Check your e-mail
> security settings to determine how attachments are handled.
>



-- 
Nick Gravagne, RPT
AST Mechanical Engineering
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://www.moypiano.com/ptg/pianotech.php/attachments/20120214/7dd3cd99/attachment.htm>