Make your own mold (for epoxy resin) Cornstarch vs Dish soap
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- Опубліковано 3 жов 2024
- I have been using commercial grade mold making kits for a long time... so I decided to try homemade mold making!
The two techniques I've seen made, are with soap and cornstarch as shown here.
Things you need for these molds: Cornstarch, (or dish soap), 100% silicone and something to make your mold of!
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I just tried this, struggled and struggled, ,just kept getting sticky, sloppy gloop. I think glycerin is a key ingredient for the process. I was using Fairy dish soap (popular soap in the UK) and discovered that it does not include glycerin in the ingredients. So I tried some liquid hand soap (and lots of it!!) that was nearby, it contains glycerin .... game changer!! Worked a treat. In a short time the silicone had firmed up into a nice putty and didn't stick to my hands. Made fab moulds. So my conclusion, for anyone trying this for the first time, is check the ingredients of your soap and make sure it contains glycerin 😁I
strange. I used Fairy and it worked, I used the blue stuff, maybe it has Glycerin..?
I've got a whole bottle of glycerin from a craft store, wonder if adding that to dish soap will make it work better?
@@SalemSphynx Certainly worth a try if your dish soap does not contain glycerin. I bought some glycerin myself specifically for this purpose, but have not tried it yet; it's still sitting on my desk waiting to try 🙄😁 ... there was such a huge difference between using the dish soap and the hand soap.
@@EJPARSONSUK Ya I cant even recall why I bought that stuff but thanks 4 the info! If I get around to using it I'll post my results;)
less soap, more kneading time..you want to knead it until you can feel it start to firm, it cures in 15 minutes when done properly
you're right the cornstarch works better. I used a lot more dish soap by accident, applying it to the silicone about 5 times and it cured a treat, but not sure why.
I also have experience with the corn starch method, and if you had used 1 quarter of the amount of cornstarch that you used in the video, it would have still cured in about 2 hours and most importantly still been bendable as raw silicone is. Too much cornstarch turns the mold into a fragile Mould. It works great for flat objects but using less cornstarch allows us to make surrounding molds that last and at a fraction of the cost of Smooth-on
Cornstarch works great! However it does leave a matte, cloudy finish to the resin piece. I'm back to square one trying to find a method for a smooth, clear finish on my resin. Thank you for sharing!
Does sanding it help?
I’ve been using Stonecoat countertop ultimate topcoat (both matte and gloss) and it’s been a game changer!!
try less CS, it worked for me better than I expected, about 10% CS to the 100% silicone
I just asked this question, but thank you for the answer.
@@multicraftmom2602 for what please?
I just started this whole mold crafting thing , and i find it pretty expensive to keep buying liquid silicone or even silicone molds , so i watched a bunch of video's like this one on how to save money and make your own silicone molds by using cornstarch or dish washing liquid , i found the cornstarch method to work better for me , it really works . But i discovered that my first project when my mold came out i had this white residue stuck to my project it appeared to be cornstarch resin so the next try i cleaned the mold really good inside with soap and all and the same thing happened again , maybe it's because i'm doing epoxy resin in this type of homemade mold or maybe i need to try the dish washing soap method not sure , the way i fixed the problem i sanded down the project but it lost some of the design and it is no longer clear due to having to sand it , it was either that or waste my project and resin .
That happens to me with molds I've bought from stores. I looked into and it said to sand down the project until you get to an clear layer.
I want to try this method to make molds, but this is my current way of making molds to use for resin. It’s a mold using gelatin and glycerin and will run you like $12 at the store, and can just be melted down and remade into new molds. m.ua-cam.com/video/XYCML79vfDU/v-deo.html
I’m sorry I didn’t see your comment sooner! I’ve been using Stonecoat countertop ultimate topcoat and it’s been awesome!
@@multicraftmom2602 I've heard of Stonecoat Will try ...thank you. But the problem i had wasn't with the resin it was the homemade silicone method .
After sanding, you can clean with rubbing alcohol and add a clear coat of resin to bring the shine back!
I tried the soap one and it was really gooy, I’m still waiting for it to set
The dry ingredient is gonna cure faster than the wet so u cant give both the same amount of time
makes me want to play with corn starch!
Oregon Burls The Burl Hunter Just Under the Bark better than the dish soap!
You used A LOT of soap, is not necessary to use that much, just a spoon and then knead it under water until you feel it starts to harden.
Thanks! I knew I clearly did something wrong! Had great success with the cornstarch though. Have since stuck with 2 part silicone mold making materials with great success.
Wayyyy too much soap, as you already know. One more tip is once it’s ready, don’t just glop it on. Work with small amounts, pat it onto an area of your piece, repeat until entire area is covered. No chance of bubbles, and as long as you work smoothly, leaving the bulk of your silicone in the soapy water (2 TBSP of dawn/cup H2O is all you need 😉), you’ll get a really good reusable mould. ALWAYS use a mould release of some type. Believe it or not, I’ve used Pam cooking spray in a pinch & it works great!
The two part 1:1 pourable silicone kits are terrific, but very $$$. This is a much cheaper way of DIY ❤️
I think the process is kind of the all the way around. Add the silicon amount you will need then add either the soap or the corn starch then you can control the process better.
Or just pour the entire tube of direct silicone and smooth it with your gloved hands over the piece you wish to mould and leave overnight ..
Might need more than one tube if it's a large area to do.. x
so you don't NEED the corn starch or soap?
I tried both it was really messy it was really hard to wash it off my hands what did you wash your hands with cuz I couldn't take it off took me to days.
Yaaaaaaay for cornstarch. Imma make this :)
You used to much soap. I did some molds wih silicone and only used the soapery water to keep the siilicone from clumping too much and easy to work into the shape I want.
But I think it was a good idea to soap the object before using the silicone. It must help release it. Some of mine were stuck and left with silicone on...
AuFilduTricot thanks for the feedback!!
The white 100% silicone caulking works better than clear
I’ll give it a go! Thanks 😊
I had to use to dish soap method in college....hated it. Ours set up, i dont think you had the right like ratio amount....i don't remember how it was meant to turn out. I never touched that method again after that class. But i might have to try the cornstarch one, never heard of it.
I think you used way too much soap, I have only made a few but never had a problem.
Neil Hersel thanks Neil! That’s what I’ve heard
I even ruined a bought silicone mold with the soap mold because they where sitting next to each other and the not curing mold made the bought one all bubbley
I wonder what you could substitute for the cornstarch, like charcoal...
I would experiment with very fine chalk (calcium carbonate) but I'm sure any insoluble compound would likely work OK. Chalk is insoluble, but safer than things like mineral talc.
first of all what mold release did you apply ? oil or something with your fingers ?
I've heard resin won't cure with this type of mold. Can anyone say if this works with resin or not for sure? Thanks.
It 100% cured. No I have noticed, that smaller items, like the little snowflake ornaments I have made with it, are softer when I unmold them, but I just lay them flat and they fully cure without issue. Also, if I leave them in the mold, and not be so impatient, they also fully cure in the mold.
Thanks, the soap to be used must contain glycerine in order for it to catalyze the silicone
What Kine of silicon did you use? When I tried it with normal building silicone, it goes into billion pieces that will not stick to one lump. And it’s absorbed all the water.
try waterproof ;)
Needs to be 100% silicone.
Did you have a good result pouring resin into the cornstarch mold, did the resin pick up powder from the mold?
WARM!!! WARM WATER!! NOT COLD. Waaayy deeper pot. You have to do it under water so no air gets it till the end and more dish soap
Thanks! I knew I clearly did something wrong! Had great success with the cornstarch though. Have since stuck with 2 part silicone mold making materials with great success.
@@multicraftmom2602 yes the cornstarch method is my favorite as well.
Hello, have you ever tried using the silicone straight from the tube onto a form?
Joshua Gutierrez hi Joshua. I use silicone straight on plastic, when I want to make freeform shapes Like geodes or letters.
I have only done the dish soap way, I only use lukewarm water and soap (never cold water) and I have never had the silicone not set up. I also mix it in the soapy water for 3-5 minutes. I have noticed imperfections within the silicone due to the water being trapped in between the silicone and the object you are casting, so I am going to try the cornstarch method!
For your cornstarch method, did you find the mold was exactly smooth like the piece you made the mold out of?
Sophie Holmes hello, did you ever try the cornstarch method? If so how did it turn out?
I tried the corn starch method and its a waste of product, because the resin turns out really blurry and unclear
It actually molded really well , but yes it had a more matte/satin finish. I have since stuck with 2 part silicone mold making materials with great success.
Can this mould sustain high temperatures like that of molten lead? I want to make one for diving weights. Will this work for it ?
No. I tested it on hot sugar (300 degrees) and it didn’t hold up well.
Dude what if I get high temp resistant silicone? Anyone tried?
I use epoxy resin, can this be used as well?
Yes. 😊
Ya ingredients kaha sa milin gy or in k names
I was thinking about trying to make some impressions of leaves ..any ideas which would be the better mold for this ? the leaves are very thin like maple leaves ..
im trying to get the e epoxy as thin as the leaves are or close ab possible.
I’d use straight silicone if it’s thin.
You can brush a thick layer of PVA glue on the details part of the leaves, I use Mod Podge, leave until totally dry then peel off. Tea & Art on youtube has a video and has also did the same with UV resin
I am very late to the part here however, I recently saw a video that the creator used Elmer's School Glue. She "painted" the leaves with the glue using as much as was possible without the glue running off the sides of the leaves. She allowed the glue to dry and carefully peeled off the leaves. The project she used these impressions on are one of the most beautiful, but least complicated I have seen. If I can locate the video, I will post a link.
PS. A previous poster mentioned the same video. The link to the video is:
ua-cam.com/video/mXJhMc_XQ2I/v-deo.html&pp=ygULdGVhIGFuZCBhcnQ%3D
That's what I did but used Mod Podge, just put it on the leaves with my finge
I have the same problem with the soup and water,I leave over night and nothing.i will try the cornstarch. Can I use regular flour?
Sorry for the late response, Did you try it? I think flour would be too coarse.
its my understanding that you need the silicone to set in 24 hours
Have you tried it with resin?
Deen Enriquez yes. It worked very well actually. The soap I never got to work, but I still use the cornstarch one.
What are you using molud release?
That was my question as well
Is corn starch the same as cornflour?
no, there are different, starch is starch(you can use potato starch instead), but flour is a flour.
@@mariyaz.4728 In the UK it _is_ the same (confusing I know)
_Cornstarch_ (US) or _Cornflour_ (UK) is obtained by extracting the starch from corn grain, specifically from the endosperm of the kernel. It is almost 100% starch, without any fibre, protein, fat or other components. It’s a very very fine white powder that’s chalky in appearance and that ’squeaks’ when you rub it between your fingers.
In the US, _Corn_ _flour_ is obtained by grinding entire dried corn kernels into a fine powder. It’s basically very finely ground corn meal. In addition to the starch, it also contains fibre, protein and a small amount of fat. There are two types of corn flour: the more common yellow corn flour that’s made from yellow corn, and white corn flour made from white corn kernels.
Nice video
Akril silikon is good?
You put to much soap in it ,you are only suppose to you use a tiny amount
How could you do this for a sphere or a glass ball?
martymcfly hmmmm. Maybe find something to use as your ball, press it halfway and use something dowels around the outside, make two and then when cured, make a hole in the top, then put them together and seal the rim. ? That’s just a throw out there idea as I’ve never tried it.
Multicraft Mom just watched another video and they put clay half way around an object then put the silicone on.
Nice vid. Thank you
Hi, i live in a diff country and not sure what type of silicone this is, is it a sealant?
It's bathroom sealant.
Looks like slime
Please can i this method to make any 3d mold?
No harm in trying! But I make 2 part molds all the time and have better success with 2 part silicone mold making materials.
Is this really a thing?
Was your silicone a 100% silicone?
Tim Vandeweerd Yes it was. I’ve just not had any success with the soap version. The cornstarch mold is still holding up though!
@@multicraftmom2602 same here but I find the cornstarch molds a bit brittle for ceveral use.
Tim Vandeweerd what other types of molds do you like?
@@multicraftmom2602 I use "Smooth-on" liquid silicones and A+B putty silicone from FormX
Tim Vandeweerd I just received mold making materials from stone coat countertops.com, I’m going to give it a whirl!
hello what's your business contact way?
yingni tsui MulticraftMom.com
you didnt even use the mold release soap on the lid and it stuck to it derp what did you think was going to happen! 1:14