I want to "sculpt" something like a life size arm that would appear to emerge from a wall. I understand about armatures. The hand end would also be supported. My concern is the thickness of the plaster being a facter in uniform drying. Cracking.could I add something like latex ...paint to the original mix to give it some resilience. Worried about brittleness. Could joint compound be used? What is veneer...
plaster? Thank you for your time. Desperate.
I just wish I could understand what you are trying to ask.
How do i strengthen plaster. I want to sculpt an arm like / size sculpture sticking out from a wall. both ends would be supported. but not always protected from being touched/bumped.
I understand that you wish to sculpt an arm life sized sculpture which will stick out from a wall.. But I do not know what you mean by "both ends would be supported"
Further as you say there is every possibility of someone bumping into your sculpture. So either your sculpture could get damaged or someone could get badly hurt.
HI. if you want to make an arm. then get a peice of pipe big enough for your arm to fit in to. then seal one end of the pipe so that your material doesn.t spill out. then fill it with enough algae rubber to fit the length of your own arm don.t forget to roll your sleeves up first then stick your arm in and make a mould of your arm. when the algae sets take your arm out and pour plaster in and you will have the arm that you wanted. its in your own hands now.
you must be a great but limited artist 'cause youre about as unimaginative as a bag of hammers.
Didnt ask how to make an arm, asked what to use like plaster that would be relatively strong and durable. Roll up my sleeve befor dipping my arm in liquid rubber, really....?
SORRY. that was just me kidding no arm was intended i realy did not mean to offend so ill be careful in future jesmonite is a very strong acrylic resin plaster and it has no odder to it and takes 25 minuets to set it can be used indoors or out doors.
Wow. now youre talking. that sounds like the answer.
Does it otherwise have the characteristics of plaster?
thank you for your time
(ps. what do you do. how did you know about this material?)
HI. i make garden ornaments.im not an artist in my opinion only others who see my work. anyway lets talk jesmonite. wich is an acrylic water based resin without the stink.i live in the uk but it can be purchased in the states to if that.s where you are it consists of two components liquid polymer and plaster.ac100.is for exterior or interior ac200.is for indoor and can be carved.ac730.can also be treated the same as ac100.and you can mix marble dust. metal powders.and varios stone powders including portland stone. you can also mix very bright pigments or intermix the pibments to the colours you want it can be cast hollow and still be very strong the metal powders look like the powders you mix with resin but are not the same but the effect is equal and better if you type it in on the web you will find it no problem there are even video discriptions on the material. good luck.
I live in Pittsburgh, PA, USA. Thanks for the info. I'll have to see if I can find it here.
You need to consider what your wall is made of and the weight or your finished product. You also need to consider, that the more it sticks out from the wall, the more pressure on the attachment to the wall. So.....
might I suggest you go to a resin, altogether, for the sake of weight? You can make a duplicate of your arm with a skin safe material like alginate (or there's a rubber I think they call it shark skin or something like that), then you can pour your arm mold with plaster just to get a model that you can then make a rubber mold of. That rubber mold could be used to slush resin into, making a hollow figure. Check out all the products and especially the videos on http://smooth-on.com and http://polytek.com
They are loaded with ideas and instructions. Fun!
thank you for your input. I'm not actually doing an arm , more brach like. I intend to use aluminum mesh for an armiture. But it has to be fairly light and not subject to crumbling or the elements. Not that it would be directly exposed to the elements. Thanks again.
What an offensive reply,which I don't think is worthy of forum space.As the old adage goes-"If you can't say anything nice-shut your mouth!"- Not everyone can be as wonderfully gifted as you obviously are.