Added: 5 years ago
From: johnirv
Views: 54,347
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  • I want to pour alluminium in it is that safe or will it brake if I use plaster of Paris??

  • its almost 2012 use alginate!!!

  • Great video! The one and only that actually teaches how to do it without alginate.

    Thanks a lot for sharing!

  • You broke it ;(

    

  • what did u use to make the cast hard

  • @frenchfries59 it dries hard

  • There is a safe medical grade Plaster of Paris, safe on the skin (the other craft plaset bandages can burn)... the same to bandage broken limbs :) I am sure this is the best product to use, and is easy enough to find online, also Alginate is a good option in casting... :)

  • Use Alginate people! Its almost 2010!

  • @wikusdp No way!! It's much better learning how to do things the old way. Cheaper and much more satisfactory

  • I do not liek at all this plaster, never apply drect on the skin !! and the gloves ??? Bad video !!!!!

  • @PlasterTechnician I'm not expert at all about plaster casting, but I did my hand cast using the instructions in this video and it worked. My skin didn't get burnt.

  • The next part is missing :(

  • You should never use plaster bandages or plaster directly on skin. Not only might it actually burn sensitive skin and scar you for life, it will pull out every little hair on your body. Alginate is the safe professional way to do things.

  • rubbish - I've used plaster hundreds of times. Never once have I seen any burnt skin. The plaster does heat up a little but it causes a pleasant sensation.

    You can if you wish wrap the model in cling film or use Vaseline to flatten the fine hairs and create a barrier.

    Alginate is cost prohibitive.

  • @roblor And very hard to find here in Italy. Besides, alginate lasts only 30 minutes before losing the shape.

  • Why didn't the 2 halves of the cast stick together? It looked like they were very easy to separate. But usually plaster bandages will stick together after drying.

  • The mould was made in two pieces. If you look carefully down the side of the thumb and halfway down the fingers on the underside you can see the seam. Unless the plaster bandage fabric is overlapped it will come apart easily. If your inexperienced at casting its useful to draw a line with a felt tip on your model to help define the seams.

  • could some one give me the insite to what kind of plaster to use? i know that some plaster can cause burning and cancer so what's the safe stuff called?

  • Mod Roc available at most craft suppliers. Hospitals used to use it for fractures. Breathing any dust can be a hazard. Dust masks should be worn. Plaster heats up as it reacts with water but not enough to burn skin.

  • I'm unaware of cancer risks from plaster but I would not encourage breathing in the dust. On rare occasions some individuals might have an allergic reaction. Watch for itchy red skin on hands or arms or itching eyes - a temporary minor annoyance rather than anything to worry about.

  • Any health warnings for art supplies will be printed on the packaging. Your supplier has a duty to provide safety information.

  • thanks. that wasa really helpful. are there versions of plaster of paris safe? i bought some not too long ago and i was told that u shouldn't submerge ur hand or and body part in it.

  • They probably meant you should not submerge your hand in it with added water. It would set trapping your hand in a solid plaster block. If in doubt wear latex gloves when mixing plaster with your hands.

  • soft soap as release agent then sealed join with more plaster bandage then pour in casting plaster.

    Chuck the whole thing in a sink of water and peel off bandage.

  • ahh yeah, so what did you pour into it after?

  • yes I got my victim to rub vaseline on first.

    The mould is made in two pieces - you can see how it seperates when its removed.

  • hey did you put something on the hand before putting on the plaster? like vaseline or baby oil or something? and could you have gotten that off without breaking it?

  • ...see below for answer from the artist

  • It's so cooooooool!x

  • Indeed, it is so coooool!

    This was the first stage of constructing a karate chopping defense robot.

    When set to guard mode it will defend your property by patroling the boundary, karate chopping all intruders.

    We are currently looking for funding to produce the complete robot.

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