1277 Casting My hand Using Alginate Molding Powder
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- Опубликовано: 8 окт 2021
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Hands down the best casting for a video. And they broke the mold too.
lol
Cooking spray makes a good mold release for delicate castings. Splitting the mold helps to keep it for multiple casts. Fun stuff. Orthodontists were working with this stuff in the 70s, and film makeup and effects people use it alot. Great project.
it is an astoundingly useful material mate
Wow, what a cool project. Yes, that stuff tastes as minty as it smells. Reminds me of a trip to the dentist decades ago. Now you are ready when someone in the shop says "can you give us a hand over here, mate?"
Luke that was priceless. This could be use to cast so many things, to bad you couldn't cast Rob's facial expression when you said that.
oh i might finally make that door knocker that the sales men will never touch! awesome Robert👍
lolololol - now that I would like to see!
@@ThinkingandTinkering years ago i saw a 'haunted' door-knocker project in a hobby electronics mag, when you pressed the normal door-bell button it fired a servo behind the brass knocker and that made it spookily knock it's self. So. halloween: a haunted door 'knob'? (complete with your crazy laughter)!
Great video! Sooooo many communicative possibilities therein!
lol - absolutely mate
That was amazing. It was so accurate with minimal fuss.
absolutely
Hey Robert,
very interesting video! From what I read you can actually use a tremendously smaller volume of alginate + calcium chloride* in a 1:1 weight ratio with similar results. You have to add the CaCl2 solution (CaCl2 weight % should be about 3-15 % in the final product) as the last step, as it gellates very quickly then in a matter of seconds.
If you use less soluble calcium salts (calcium carbonate maybe), the gellation process will be slower.
You can reverse the gellation later on by adding EDTA solution.
EDIT: *Calcium chloride will produce heat when it dissolves and might be irritating to skin in higher concentrations, so be careful!!
And maybe you were already using an alginate-calcium mixture, not sure.
I need to recast a hard plastic piece for an electric motor. The original broke and now the brushes arc to much. Incredible and thanks for sharing with us.
Cool content as always 😁
Excellent. Thanks again guys.
Glad you enjoyed it
Rob Sir that's simply awesome, great material to work with superb Video, love and warm regards from India
it is an interesting material for a lot of uses mate - cheers
@@ThinkingandTinkering while using Peltier device this can be a wonderful material to create the heat difference between both sides by keeping one in ice cold water and applying a paste to the opposite side, should surely give some interesting results Rob Sir, love and regards from India 🙏🏻🙏🏻👍🏻👍🏻
Reminded me of my false nose project !
lol - awesome
Soak the plaster of Paris in cyanoacrylate (superglue) to harden it, and give it a lot more strength. Warning it will get quite hot.
We used this method with a powder 3D printer a few years ago. It vastly improves the strength of the material.
Thank you Rob, I appreciate you helping me out by showing me the process to finally have gloves to fit after amputations and fused fingers. I am wondering if instead of Plaster of Paris there was a type of rock that could be moulded to be longer lasting and harder.
Hmmm... I was originally thinking something like a Pottery Hand, fired in a kiln, but that might need too many steps because of the fragility of the materials (before firing). But this is too complicated, so:
Use the Alginate mold to cast an Epoxy Resin model of your hand. There might be some expansion or contraction while it cures, but, probably insignificant.
@@TimeSurfer206 will need one for each hand, one has 3 fused fingers and a normal thumb and the other is half thumb and 3 stumps.
Cements
this is part one mate - in part two we use the plaster hand to make a latex glove - the plaster is important as when it is dry it absorbs the moisture of the latex and give a latex film - anyway - you will see in part two - cheers
Harder rock? Could adding colloïdal silica harden it enough?
VERY COOL. 👍🏽
Awesome tip ! :):):)
I can see so many uses for this beyond casting my hand - the detail was amazing
how to Mack water glass at home and simple
Very cool.
cheers mate
I think you could use it to hold a motor and propeller for demonstrating batteries. I wonder does the fingertip fool a biometric sensor? Thanks for sharing.
oh - hey I like that idea mate
Amazing Material -- One thing about it -- It does not go thru an Exothermic (Gets Hot) period, Which makes it Safe for casting All Sorts of body parts. THis would look cool to do that Michaelangelo thing where the 2 hands reach for each other and mount them in a shadow Box. Ya know -- Show some Culture! Neat Stuff!
nice add mate - thanks for the tip
Cute! 👏
oh for sure
How do you dispose of the mold after it had been broken up?
in the bin - it's seaweed
Hi Rob, that looks like a lot of fun. Been watching your wind turbine videos, thank you sooo much for sharing they have been an education. Been wondering why you and so many others make just 2 layers, 1 layer magnets 1 layer coils, wouldn’t you generate more electricity if you sandwich the magnet layer with a second coil layer, wouldn’t that generate more electricity or am I missing some fundamental physics rule. Many thanks for sharing. Love the videos
you need to watch a couple of the theory vids I have done mate - not just the practical ones - that will answer your question - cheers
That's handy to know
lol - I see why you did there mate - nice pun
unique phone holder
nice one lol
Would there be any problem using it to take a cast of your head? Making a bust?
Other than remembering a breathing tube, and being able to do a handstand for a couple of minutes, no. It's very, very safe stuff.
you would need a couple of straws stuck up the nose for breathing I would guess
@@ThinkingandTinkering I have a 3D scanner which I used to scan my family then 3D printed busts of each, painted with bronze effect , very pleased with the results.
@@SimonPlatten wow - awesome mate - did you do a video of it? I would love to see that
breathing tubes is one thing. and you can make a collar in a bottomless bucket so the subject can sit comfortably. (support the bucket in a frame, it gets heavy).
the biggest problem is most people freak out as the alginate gloops around their face and it triggers 'suffocation' reflexes. you have to have over-sized breathing tubes to allow for the inevitable 'heavy breathing' that occurs. skull caps etc are a must. don't try it glibly, get someone in the team who has done it before.
i have no claustrophobia, but having your head enveloped in this stuff is weird and unsettling.
My Mrs is not to keen at what I have in store for this idea but I am.
Another idea is to make some Holywood veneers lol
lol
Wow, now the cigarette in the hand to smoke Rob.
lol
Have you thought about making woodgas motor?
yeah
So you made a new intro graphic but the sound still sounds like a CD with a nice deep scratch so it repeats :D
yep - love it
you should warn of dangers of plaster of paris
you think? - ok well you should do your best to avoid dropping a ton of it on your head if possible
@@ThinkingandTinkering he does have a point though, inhaling the dust can be a bit nasty. but that should be obvious enough.
I'm gonna do this to me privates. Now where is that bucket🤔
WARNING... Never try making a mould by putting your hand into Plaster of Paris. This can give off a lot of heat as it sets. In one case a child was badly burned when they were unable to remove their hands as it set despite help from other people.
ok
very good point, I've seen that happen, when a student tried to do an immerse-hand-in-plaster to make a mold; it started to cure, trapped the hand, and then the heat ramped up. we had to take hammers to it quite aggressively and risk damaging the persons hand. just putting the hand/plaster in cold water did nothing to help or cool the interior (in fact we wasted time doing that, and when you have someone screaming and panicking and flailing a few pounds of hard steaming plaster around it doesn't do your nerves any good while you are trying to help). fortunately the student had no lasting physical damage. I have seen the heat from large mixes of leftover plaster permanently distort plastic buckets. so it is potentially quite dangerous.
I had a friend in art school get a random call. They wanted someone who could do a casting. He came back from that quite a few hours later really freaked out. A famous guitar player had died. They wanted him to cast his hands. He said he had a terrible time with the finger tips.
Wtf…
ew, prob didnt use alginate
well alginate casting would have done it
✌️✌🏻✌🏼✌🏽✌🏾✌🏿 😀👍
cheers mate
custom firearm holsters!!!
nice
Off the wall, but interesting for sure! 😊
cheers mate
Casting your hand is as easy as it gets. Casting "your member" requires at least 1 practice run because you DO want to make an accurate impression that will last forever, and I have done so. It's SO much easier to show the wax-cast replica than require fluffing
Any tips on how not to make a mess?
Got a friend nagging me for a replica of mine.