[Clayart] Porcelain question

Ronda Clark rondac4765 at gmail.com
Sun Jul 3 14:39:59 EDT 2016


Adding to Mike Gordon's post, I would sit sideways to the open door or
better yet be outside and have the fan blow across you. This would help
keep the dust away from your face.
Ronda Clark


On Sunday, July 3, 2016, MGordon via Clayart <clayart at lists.clayartworld.com>
wrote:

> Ken, Try this...... carve with the door open & a fan at your back that
> blows all the dust out the open door. When done take  hose & wash the
> driveway down. Mike Gordon
> On Jul 2, 2016, at 3:53 PM, Ken Chase via Clayart wrote:
>
> Well Jeff, you really got me thinking.
>> Is there a safe way to carve and sand bone dry
>> Porcelain? Outdoors maybe?
>> The mask I wear is Hepa approved but if what
>> You say is correct long after the mask comes
>> Off I still risk breathing in silica.
>> If you know of some safeguards I'd appreciate
>> Hearing about them.
>> Thanks much.
>> Ken
>>
>> Sent from my iPad
>>
>> On Jul 2, 2016, at 11:38 AM, Jeff Lawrence via Clayart <
>>> clayart at lists.clayartworld.com> wrote:
>>>
>>> Ken Chase wrote:
>>>
>>>
>>>> Thanks Jeff:
>>>> I work alone. I carve bone dry porcelain in my
>>>> Garage. I do wear a mask. I don't believe I'm putting anyone at risk.
>>>> Your tenor of your post suggests you made an uninformed Assumption.
>>>> I do appreciate the good advice.
>>>>
>>> Hi Ken,
>>> I have a skeptical bone, too, and sadly find I make many uninformed
>>> assumptions. It's certainly possible I did so here. I encourage further
>>> research from more trusted sources.
>>> The tone I strove for was humor-lightened dead serious, but your reply
>>> suggests I failed. It might be I spent too many years fruitlessly telling
>>> employees  the dust they raised was bad for both them and me.
>>> As I said, the choice of clay condemns us to some clay in our lungs - no
>>> way to avoid it entirely. And the histrionic tendency to exaggerate
>>> dangers
>>> these days is not a bus I care to board.  But clay particles are very
>>> small
>>> - any particles bigger than 2 um (2/1,000,000) get promoted to silt, and
>>> don't exhibit the plasticity that makes clay so enjoyable. Particles
>>> smaller than 2.5 um are too small for our lungs to cough out, so they
>>> stay
>>> there. I leave the arithmetic as an exercise for the student. Now,
>>> knowing
>>> that each of those particles can slake its electrostatic yearning for
>>> water
>>> either with water we add or the water it finds in our our chest cavity, I
>>> personally opt for the first. Please confirm this from reliable sources.
>>> I maintain that protective gear not HEPA-rated does no good, but please
>>> seek out a second opinion (but not from the bozo who taught you to carve
>>> dry.) Carving in your garage means those particles will float around,
>>> settling only over hours or days, then recirculating every time there's
>>> air
>>> movement to roil the up.
>>> As for microcracks in dried clay, there's a good section on it in
>>> Fraser's
>>> book, "Ceramic Faults and Their Remedies." And it's a good read if you
>>> ever
>>> want to get beyond a superficial knowledge of clay.
>>> Best,
>>> Jeff
>>> Jeff Lawrence
>>> jefflawr at gmail.com
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