Plastilina Clay Hardness

bildio

Elite Cafe Member
Joined
Dec 11, 2010
Messages
292
Location
MD
I just received an order of Roma Plastilina (Soft No.1).

The 2 lb block feels pretty hard. I expected it to be soft & pliable. Is this the way it's supposed to be or is something wrong with it?
 

Newton Pens

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Joined
Sep 2, 2013
Messages
103
I used something called plasticine in college. It was clay and plaster and old motor oil all mixed together. It varied in hardness but was pretty hard. Sort of like that bright modeling clay you can find at arts/crafts stores. Maybe harder, even. Sticky and stank. :) But I would think that it needed to be fairly hard to hold it's shape and fine detail well.

Looked like this -
http://fc01.deviantart.net/fs50/f/2009/256/8/d/Alex_Plasticine_Sculpture_by_Alexa_B.jpg
 

DakotaDocMartin

~ Elite 1000 Member ~
Joined
Oct 15, 2007
Messages
1,835
Location
Grand Forks, ND
I just received an order of Roma Plastilina (Soft No.1).

The 2 lb block feels pretty hard. I expected it to be soft & pliable. Is this the way it's supposed to be or is something wrong with it?

You have to warm it some so it gets pliable. Heat your oven on the lowest setting for 10 minutes and shut it off. Put the clay in there on a tray for 10-15 minutes. Keep an eye on it so it doesn't over heat.
 

Doc Mark

~ Elite 1000 Member ~
Joined
Nov 16, 2006
Messages
1,284
Location
Hampton, Virginia
When I was doing more sculpting, I made a "warming box" for my clay. It was a large metal box that fancy cookies came in. I took an old fashioned metal dome photo reflector with a lower wattage bulb and placed it over the tin box with the clay inside. It kept the clay at the perfect "sculptabilty" consistency. The clay would firm-up on the armature which gave it better density for detail work. If I needed to radically change a large area, rewarming with a heat gun or even a hair dryer would get the job done. You can buy very soft clays but they don't hold details well.
 

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