[TheForge] , Vol 47, Issue 63-smithy new construction

[Andrew Vida]

lee robbins wrote:

> Hi Andy, 
> In my heavy resin casting and plastic sanding days i
> generated vast amounts of fine white dust in my
> parents' house. My mother was doing lost wax jewelry
> in the same cellar and my white dust coated her
> waxings and they came back from the caster with new
> textures  that were unintended and vastly increased
> time to clean up the gold and silver. We had to
> prevent the dust from leaving my space. A studwall and
> a door and a fan for negative pressure saved my life. 

	I've had fingerprints come out in castings.
> 
> In your new construction and the effect of negative
> pressure in a tight system on forge draft i would
> suggest the smithy be accessible through an outside
> door and not permit entry to the main space except
> through an anteroom, like a mudroom to sequester it.
> if there is major access to the outside ventilation
> will be effective. With potential welding gases and
> plasma fumes leaky should be to the outside. Interior
> doors permit the dirt to distribute itself thoughout
> the bldg. 

	Thanks