NO MESS Silicone & Cornstarch plus DIY pourable Silicone MOLD MAKING
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- Опубликовано: 3 авг 2018
- I show you how to make a casting mold using Silicone and Cornstarch without making a mess, as well as show you how to thin Silicone with Naptha for pouring thin, high detail molds.
In my previous video, I began the process of making jewelry from milk. To make jewelry, you are going to need a mold. Here is a great way to make cheap molds.
The measurements do not need to be exact, but:
Cornstarch and Silicone:
1 cup 100% Silicone Adhesive Caulk
1/4 cup Cornstarch
Naptha and 100% Silicone Adhesive Caulk:
1 cup 100% Silicone Adhesive Caulk
1/8 cup Naptha
Should you still have questions, I answer every comment and email.
Email : martin20krunner@yahoo.com
PATREON : / geo_sustainable
PayPal : GEO sustainable 
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As far as I'm concerned, this is one of the best videos I've ever seen for making molds. I've never seen this particular method for making a thin pour mold and I appreciate that you have it here. This seems really useful for highly detailed items, but most of all, what a money saver compared to buying the mold making products! Thanks!
You are most welcome.
It would have been very helpful to see something that has been moulded into it though, to actually see the outcome. Thanks
I just bought 2 10ox 100% silicon tubes for $14. This is 1.5 times more expensive than 32oz of smooth-on from amazon.
@@goofyfoot2001 Well, then, let's hope that the viscosity of your smooth-on is just right, and let's hope you don't need to make many molds.
@@GEOsustainable I've made tons of molds with smooth-on, it works great. I wanted something cheaper, this isn't cheaper.
My favorite part was when he was trying to open the Naphtha and he said 'I'm going to get the jackhammer now'. Really gave me a chuckle...... Loved it!!
Yeah, over-kill the tool to open the cap that is over-kill on some sort of child or idiot safety? That blasted cap is the result of government regulation. You have to twist it hard and then pry off with a screwdriver. Way more dangerous than a screw cap. I miss the old days, when it was the responsibility of the adult to keep things out of reach. These days, the government thinks they need to do all the thinking. Win, win, win for governments. They get to regulate you, tax you for the privilege of regulating you, and spend your money giving jobs to people that like to regulate others. Anyway...I thought it was funny, so I just said it.
I can't believe I found your video, this is exactly what I was looking for. Great and detailed step by step how to make a mold. 👍
I am glad you did, and that I am able to help. I have a few more on the subject of silicone. I hope you watch them, as silicone has a lot of interesting uses. And, I hope you share.
I've looked through so many videos for these silicone mixtures, and this is the only one with the solution that saves you from messing up the room, many thanks for that.
My pleasure, glad to help. Yes, you can use this method for not making a mess for many projects, not just silicone and corn starch. I try to mix all my chemistry this way. I have another one where I mix Naptha in a ZipLock. Works great too.
Me too. I have regular bread flour for one. Corn starch and baking soda for another. Plus the oil an vinegar and lemon juice got another. I want the air dry. I can't add details to my project then bake it!!🤣
@@marilyndreamwalkermejorado1208 How is the result with bread flour?
Interesting and informative. Looks like I'm going to be adding silicone and naptha to my craft supply list. Thank for sharing!
Excellent. Wonderful to hear that you found value in the video.
Thank you for making this and explaining the some science behind it
I am so glad that I was able to present content that you found helpful.
Agreed.
I’m so appreciative that you showed how to open the tube of silicone!
thanks, I am glad you like my content.
I have watched tons of videos on here over many years and rarely ever make a comment..today I had to..I completely enjoyed this video tutorial..your voice is so calm quiet unlike many female voices and I found it actually soothing while watching..the instructions were so detailed, clearly stated..easy to follow, and well laid out..the comments on the chemicals what to do and not to do at the last tutorial were very well explained and why..many do not know these things and need to know before using if not an artist of many forms..everything in this video was well laid out,, step by step well prepared before and I look forward to seeing more of your videos..subscribed shared and thumbs up! Great way to save money on supplies that are very expensive when you can make your own that is very simple to do and does not take long at all. One of the best tutorials I have seen!
I am glad my content was helpful. Your kind words are very inspiring. Thank you.Have a look around, I have many helpful videos on silicone. And, my next one is also going to be on silicone. I also have a video about candle testing with covers how to do it safely. You may want to check it out.
Thank you , very informative and well presented
I am glad I could help. I love helping folks save money.
thank you
that was very helpful
i was trying to make a mold to cast epoxy
this might come in handy
My pleasure, and thank you for sharing your plan. Let us know how it works, please. Consider subscribing as I plan to do many more videos based on feedback and comments. Your idea sounds like something others would be interested in seeing me do.
Thank-you! A very easy video to watch. I lol'd at "but, I do have a wire nut."
Thank you for watching. I do like to be corny every chance I get. Glad I made you LOL.
Never saw the pourable silicone made before! Thanks! FYI, a tip cutter as well as a wire to break the tube seal are found on most caulking guns.😊
Well thanks. Consider subscribing and stay tuned as I plan to do a lot with silicone and mold making as we gear up to replace many one use oil based plastics with bioplastics. Good information, thanks for bringing that up. Yes, I have one and is something I too would recommend folks look for.
omg Nanci! thanks i didnt know why its used for this tool!
Great ,detailed explanations. Thank you.
Would it be possible to pour the pouring silicone into a deep shape to make a 3 D dog??? Thank you
Wonderful, methods and presentation are highly appreciated.
Thank you very much
Dr Khatib
Thank you, Dr. Khatib
thanks for the ziplock bag tip! and your pourable silicone is the 1st one i have seen so far!
i have a 20cm X 20cm wood filigree which i need to make a mold from. if i were to use the 1st method and make several batches of silicone mold to cover this big filigree part by part, would the seams be noticeable after they dry? or do i need to make the mold in 1 big batch? thanks!
It will likely have a small seem that you can fill with thinned that I demonstarted in the second part. I urge you to watch more of my other videos on the subject of silicone first, as they contain additional tips and tricks that will be a value to you. Particularity, the one on mold release recommendations.
Thanks for posting this video. Question, if you have a detailed part that you wish to make this mold of and then cast more of the same part, what can you use to coat the part so there is NO chance or the mold sticking to the Master part?
Great question, and I am so glad that you asked before attempting. I made a video on Mold Release recommendations. I strongly encourage you to watch. After watching, if you have any questions at all, leave a comment or contact me via email. Cheers and thanks for your question. ruclips.net/video/gJcTeh4GHA8/видео.html
Seriously, the pouring method is a game changer. I had never seen that technique, thank you!
Hi again! Just to let you know my mould has worked a treat! I’m so pleased it’s saved me over ten pounds for something 1 inch in depth and 1.5 inch in diameter, plus now I know how to make any others I might need. I used the 100% silicone caulk and cornflour method with a tiny drop of cooking oil and a drop of acrylic paint to colour it. The mould was the little opaque glass tea light holder I mentioned and I oiled it lightly before pushing the mix into it. Smoothed the top out with a flat bottle top. May have missed a couple of spots! It was hard to extract so I used a strip cut from a plastic document wallet to run round the sides and free the 2 small spots that were stuck, then slid a kitchen knife between the strip of plastic and the glass and out it popped, perfect! Thanks for you help and advice 👍
Always glad to help.
Try using Vaseline thinned with naphta. Then brush or spray it onto your item. Let it dry. Leaves an even, super light thin coat of Vaseline behind!
Hi. Great video. I'm new to the whole mold making process. I originally was going to go with smooth on since it's pourable. With your pourable method, am I able to use it to make larger, one piece molds? I want to make a candle mold and this seems to be what I'm looking for. Thanks.
Thank you, is always great to hear. Large as you want. Depending on thickness, you may want to add cornstarch. I have made a video wherein I pour a sheet that may give you more to go on.
ruclips.net/video/sIQkFVftDZU/видео.html
Thank you so much 💕. I'm working on molds now.
You are most welcome. I have a series on this subject, and my newest is one of the best as I have improved the process as well as the product. Here is a link I think you will find useful:
ruclips.net/video/Ci28Y3Z3bYU/видео.html
Thanks for not using LOUD music.
As an Curing Agent. Add about 1/4 teaspoon of Distilled Water to pure silicon, to your Pourable Mixture.. About 1 Teaspoon per Pound.
Mix the Silicon and Naptha first to the Pour stage, then add the water and Mix it in, Pour Quickly, as it will start to set up in a matter of Minutes.
it should cut the cure time by 3 quarters.. from 24 hours to less than 6.
Silicon needs moisture to cure. It normally absorbs it from the Air.
if you've seen the Dish Soap and Silicon mixture. The kneading is done in Distilled Water with dish soap.
The Dish soap just keeps it from sticking, It's the absorbed Water that speeds up the Cure time, not the Soap.
Thanks for sharing. I'll try it.
@Michael kilby Yes, the Distilled water speeds up the cure time. For the amount you were mixing, 1/4 teaspoon is I believe the correct amount.
the Silicon will adsorb it and cure faster.
Thanks man
Why "Distilled" water. Is it ok to just use tap water?
@@benju2438 free of contamination
Thanks, it always burnt my butt at how high priced molds are and the kits is rediculously high too. I'd never seen such a cheap easy way to make the molds Thanks 🌹🌹🌹🌹🌹🌹🌹🌹🌹🌹
You are most welcome. Yes, I plan on showing folks alot of things that are silicone that we pay far too much for.
This video is interesting. May I know is the silicone caulk food grade. I want to use the mold for jelly making. Looking forward to your advise. Thank you.
Thankyou this was just the video I wanted to watch. I'll deffinatly be making the 2nd method of silicon mouldings.
Awesome, glad I could help. I have a few more on silicone that may also be helpful.
So very helpful , thanks for taking the time to do this!!!
My pleasure. I am glad you find value in my content. Stay tuned, I'm always doing interesting things with silicone.
Thank you so much!! I have been looking for a cheaper diy for pourable silicons moulds! You have just made my day sir
I am glad you found value in my content. I have several more videos on silicone, if you want a few more options. You have also, made my day ma'am.
You've made mine. I've been watching video after video thinking ok which should I use. And was totally confused. I'll definitely use this and save a lot.
I'm in the UK do you know what I could use in place of Naphtha? We have something called white spirits that jeeps coming up in my search but it says that's used for cleaning paintbrushes I have no idea what to buy. X
White Spirits is the same thing. Use with confidence. Thanks for your question.
OK, so I used the corn starch in the bag method. After applying it to a flat plaque that I wanted to copy, I couldn't peel it back off. Now I have to disolve the silicone off my original. Would I need more corn starch or just spray on mold release?
Hi 600 miles. First, I want to apologize for not replying sooner. I did not get the notification. I answered this very same question and it is in the comments. Abdallah wanted to know. So, I am making another video wherein I will use release agents, as it seems that is something I could have included in the video. Unfortunately, most never watch more than 4 minutes, so putting in everything possible would most likely not be seen. Very few people watch the entire video. To answer your questions. I would not use a silicone based mold release. I tried it and it absorbed into the mold. What works for me are 2 things. PAM, a vegatable based cooking spray, and SOY WAX. Both can be washed off. Thanks for your comments. And subscribe for more upcoming videos. I have noted to include more information on possible trouble areas.
Thank you for your effort to make this very informative video 😊😊 I have one question, can we use any paint thinner instead of naphtha? I live in Europe and English is not an official language here and we do not have the same brand which you showed in the video. So I was wondering if a nitro paint thinner would do the job
I am happy to share how I do things, I am glad you like it. Yes, you can use any paint thinner, however, I have a better solution I want to share with you. Here is a link to one of my most resent videos on the subject of silicone.
ruclips.net/video/Ci28Y3Z3bYU/видео.html
Thank you so much 🤗🤗
Thank you.. I needed this video!! Taught me what I need to know!
@@ashleymartinez6830 Wonderful to hear.
Very nicely done!!! I learned something new!!!
My pleasure. I am glad.
Thank you so much for sharing theses cool tips!
My pleasure. I am glad I have helped you.
Thanks for this ! Can I mold a piece of wood with silicone corn starch? Or would it stick to the wood and won’t take the details of the little piece of wood?
Great question. Silicone will stick to wood very, very, very well. Silicone caulk was formulated to stick to wood. Silicone caulk is a superior adhesive. I posted a video to help you out. I recommend what mold release to use in the video. Watch here: ruclips.net/video/gJcTeh4GHA8/видео.html
I want to make molds for small cement shapes. Would the thinned out silicone hold up? Also, would the thinned silicone be brushable? I'm not in a hurry for them to cure.
Great questions. This will make perfect molds for pouring concrete shapes. The thinned silicone is just as durable as straight from the tube. If you thin it, allow for a bit of shrinkage.The cornstarch serves two purposes. One is to speed up cure time, and the other to to cure the silicone should the mold be very thick (more than 1/4" will not cure for months, so use the cornstarch). Yes, the thinned silicone will be brushable. I have a video showing how and give mold release recommendations. Check here: ruclips.net/video/gJcTeh4GHA8/видео.html
Perfect. Thank you, sir.
My pleasure, sir! I am actually one of your subscribers. I love your content.
How do you smooth out the inside of the mold where it doesn’t look like aged stone from the whole or air pockets.
Great question. Check out my last video on degassing silicone here. ruclips.net/video/DSam6Iv91Jg/видео.html
Thanks for making this helpful video! I just started trying to make small rock molds. I wish I had the foresight to put the silicone and corn starch into a baggie like you demonstrated. I made a pretty big mess.... lol!
I made many big mess myself before I remembered how to ice a cake. Glad you found me. I love to cook, so much of this comes out of my kitchen.
Oh yeah I want to mold stone surfaces as well so I may mix different concrete types to make artificial stones
Very helpful! Thank you!
You are very welcome, and thank you. I have newer videos on this subject, refining how this medium is used. Check them out.
super awesome, do you have any examples of cast items using the Pourable? What is the shrinkage like?
Yes, I do! I have just the video. Go to the playlist on Silicone Molds. You can find your information there.
Thank you for the scientific explanations !!!!
I just pass along what I know. I am glad you enjoy my content.
Great video very informative. Do you have anything on a silicone mould to cast lead/pewter. Thanks in advance
Silicone would not work for molten metal. Glad you liked!
Thank you for your video.very helpful.
My pleasure. I am glad I could help.
Pure awesomeness. Thanks!
Thank you. Stay tuned for new ways to use silicone.
Thank you sppppp much. This is brilliant. I have searched for a way to pour silicone. You are the best.
I am so happy I can help you. I have a short series on making different things with silicone. I hope you check them out.
I have a large mold and think I have enough tubes. However, If not, can fresh dough bond ok with cured silicone when I get more? Would bonding be possible with or without oil in the dough?
Specifically, I am thinking of adding a little oil for additional flexibility. However, I get the impression that oil is used for release to prevent things from sticking to cured silicone but am unsure. Would including oil jeopardize the chance of fresh dough bonding with the cured silicone?
Great questions! Dough will not bond to silicone, but it will slow down the hardening considerably. It took a week to dry my dough in a silicone mold. Heat will speed this up. I did not use anything as a release agent for the dough and it popped right out. I honestly don't think you need it, and yes, oil will affect the dough, but corn starch or flour will not. Feel free to email me, link in the description, if you are still having trouble. Look here for my video on making dough. ruclips.net/video/aL5Liq7OaA4/видео.html And, yes, oil can be used as a release agent for silicone.
Thanks for the info mate... wondering if its possible to add another ingredient to make the resulting mould harder.
Never tried it.
Thank you so much for this! I have successfully created molds for a reasonable price!! Thank you!
Wonderful news. Thanks for sharing.
Amazing information you gave here!! Thank you!
I am so glad you find value in my content. Thank you for your comment.
Hi I need some help working out the measurements for making 650ml quantity to make a block printing mold.the mixture will be poured into a smooth metal cooking tray to create the block, any help would be great.
This video has 2 formula, so I will give the one for silicone and cornstarch first. For every 100 gr/mL of silicone, add 10gr/mL of cornstarch....so 65 gr/ml total. I give gr/mL as they are pretty much the same. This gives a cure time, regardless of thickness, in about 1 hour. If you are adding Naptha, start with 1/4 cup/60mL of Naptha to your 650mL of silicone. Adjust the Naptha in small increments until you get to the viscosity that you want. Keep in mind, the more Naptha you add, the more the silicone will shrink. Silicone and cornstarch does not shrink. Hope this helps.
Hi, thanks for the precisely instructions. Can we use this in food, cake or jelly?
I would not, I would watch my other video here: ruclips.net/video/Ci28Y3Z3bYU/видео.html
Can i use resin with any of these molds ?
Thank you so much for the helpful instruction. When making the pourable silicone does the naphtha evolve fully from the silicone once its cured? Is the final product 100% silicone?
Great question. From experience, I can say the smell seems to remain forever. The smell is very faint. The final product is 100% silicone.
@@GEOsustainable There is an odor free kerosene made for heaters that might work as well without the smell. If the petroleum products are just a thinning agent, not a gardener, then any petroleum distillate might work. It vaporizes and the silicone remains and cures. Interesting. Thank you.
Thanks very much! Very helpful and informative! Really great video!
Thank you. I am glad that you have enjoyed it and that I have helped you with your projects.
Sir how can I make more Hardened as well as elastic mould with different methods cuz the mould tear apart due to it's complexity,
I'm making mini sculptures this summer holidays as my school project 😋.
You may have to make a multi-part mold, with parting seams to aid in removal. I thin pour portions and use mold release between pours (sections). Cornstarch makes silicone stiff as silicone can possibly be. Elasticity can be modestly affected by adding Glycerine.
Thank you for the video. Do you make personalized molds for customers? I need one for a soap mold.
Thank you. I am so glad you like my content. I would be happy to make a mold for you. Just email me, my email is in the description.
I want to make dice molds and this video is helpful but I want know if I could use them to make Chocolat? (of course from another mold then I would pour my resin in it)
This will work for both dice and chocolate.
Thank you so much ^^ for the answer and the reply I'm going to give u an Abo and will watch future videos ❤️
Thank you for sharing your knowledge..I make polymer dolls ..would this work for that ? to make the heads
Yes, but watch my other videos on Silicone, as each one has information not addressed in this one. You are very welcome, it is my pleasure.
Thank you for this because I saved a Barbie head to make a mold of.
Great Information! Thank You!
Glad you like! Thank you. I have an entire series on silicone mold making. If you want to check out a few different ways to use it.
Hi, I've read that the mold shrink after the Naphtha dry out, really the size of the mold changes after a few weeks?
Great question. Yes it does shrink. It can shrink from 10 to 20%, depending on how much you thin it. I have not developed a formula to calculate shrinkage yet; but, as I get this question often, I think it is time to develop a chart folks can refer to. Thank you for your question, I will begin a series of trials for this.
Great video! Can the pour able one go into the oven?
Great question. The type I use where Acetic acid is evolved has a working temperature of 350F. I use it in the oven every day. You can find silicone that can go as high as 600F. Check on the label.
Would either mold be oven safe up to 200 degrees for wax casting? I would prefer to use the pourable formula but concerned about the flammability of solvent.
This type of silicone is rated to 350F, so it is safe at 200F. Do not allow direct heat. Give the new mold time for the solvent to evaporate, as it is very flammable. I gave mine about 3 weeks.
HI, this is great information, well filmed and easy to understand. I am looking for silicone recipe to make molds to pour lead into - any ideas?
Yes, unfortunately, silicone mold will not work. Silicone burns at 350F, lead melts at 650F. To mold lead you need to use a refractory sand (green sand). I get this question a lot so I will make a video on how to pour lead and aluminum. Until then, look for videos on how to mold aluminum, this is what you need.
Are there any alternative for naptha? like can you use a paint thinner or acetone? I dont think we have naptha in my local Depot.
yes, I made many other videos to cover those questions. I give you lots of alternatives and ideas in my later videos.
You are so chill. Love it. Thanx for learning me up
Thank you for your comment. So glad you found this useful. Have fun.
Thank you sir! I'll try that💫
You are most welcome. Stay tuned as I am planning many more videos on silicone.
Thanks for sharing your knowledge! Very easy to understand and watch tutorial.
Thank you for your generous comment. I am happy you have found value in my content.
OMG, the plastic bag! i made SUCH a mess trying this is a bowl with loose latex gloves. yuk. then i tried the silicone in soapy water. nope did not work.
the cornstarch method worked but it was SO messy i didn't want to try again, but here is this lovely fellow with a plastic bag! YAY!
I am glad you found value in my content. Thank you for your comment.
It's no doubt a great mess saver. I can't help but think of, a zillion of those bags in a heap. 😪
The bag is a good idea but I was having an anxiety attack watching him try to work it into the corner !! Must be one of those people that can't get any toothpaste out when the tube is still 1/4 full..😂🤣
Just lay the bag on the table and use anything as a straite edge to push every spec of the silicone where you want.. Just like a tube of toothpaste someone has squeezed with there whole hand leaving it full of toothpaste instead of laying it on the sink and simply starting from the opposite end flattening it towards the cap naturally pushing 100% of it out.. 👍🤣
Goodluck !!
( Its not meant to be a negative comment.. Good Vid)
Thank you so much!! I knew about the corn starch trick but not the naptha one!
I am so glad you like. Stay tuned, I am making a new video on ways to thin silicone and make a few things.
I want to make a mold with silicone and pour liquid latex in the mold. Will these two stick together though?? And won’t be able to peal it off?
They will probably stick to each other, do a test first. You may want to use a Mold Release agent. I like to use Dawn dish soap as it is handy. I have a video for you to watch so you can learn how to use a Mold Release. ruclips.net/video/452y9FQ7a0M/видео.html
Will this work with "klean strip green- odorless mineral substitute"?
Yes it will. As I said in the video, you can use mineral spirits.
Great stuff thanks, so much cheaper than buying the mix two ingredients setup.
So glad you like. Cheers
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, the working temperature of silicone is 350F (175C). What you need is a green sand mould. I am so glad you asked before attempting this.
any reason you dont use your bag method to make the pourable mixture?
You can use a bag to do this. I did so in later videos. Here, I wanted to show the viscosity of the mix. Great question.
well here we are, ready to try the liquid pour method. i have my objects taped on the bottom so the detail side is facing up. they are sitting in a thin cardboard box waiting for the stuff to be poured on them.
my question is, will the silicon release from the box or is that just going to be part of the finished mold after i the bottom off. AND that begs the question, am i going to be able to get some of the cardboard which will be in contact with the silicon off. or do i need to find myself a plastic container?
thank you so much for your help!
So glad to hear from you again. I cover the preparation steps before pouring silicone to mold an item so you can release it here:
ruclips.net/video/gJcTeh4GHA8/видео.html
. I use wax for most applications. I have just completed a new series on using skin safe, PLA plastic safe and food contact safe non-solvent methods to thin silicone. I am sure you are concerned about the Naptha, as many are, so here is a solution:
ruclips.net/video/Ci28Y3Z3bYU/видео.html
@@GEOsustainable oh this is way too complicated requiring things i do not have.
i just want to make a mold of a rather detailed, small item. going to go back to silicon and cornstarch.
thanks!
Do you think I could cast pewter or lead into these molds?
No, the working temperature of silicone is 350F.
Much needed thank you !
You're most welcome.
We learn so much
Thank you.
Thank you so much for making these videos! When making the pour-able silicone, can the mixture be colored in any way?
Yes, it can. I have used Acrylic paint many times.
@@GEOsustainable Thank you! I'm spending the afternoon up to my elbows in cornstarch. lol
Such a useful feat ailed tutorial. Thank you.
You're very welcome! My pleasure.
Very useful tutorial thank you
My pleasure. I have many more on the subject of silicone mold making.
Have you tried using it on clay? I want to make a small clay sculpture and make a mold of it. Further more can I use it to make a mold and then use it to cast something if I sprayed mold release or mineral oil in the mold or do you know of an alternative? Thanks
Yes, you can use it on fired clay. A glazed clay would of course be ideal. Mold release and any oil will work as a release agent. There are waxes, and soaps to consider also. Thanks for your questions, always glad to help.
@@GEOsustainablehanks for the info! I'm trying to make a gift for a fellow youtube channel, the real stuff is way to pricey imo :)
@@thetightwadhomesteader3089 This formula is the real stuff, the basic components. Glad to help!
@@bWWd0 Thank you for sharing your expertise.I would to include your advice in my comments.
@@bWWd0 I believe some clays have sulphur in them too. Which inhibits the silicone from curring.
Never heard of the DIY pourable silicone before. Did you come up with this idea? I used the Dow pourable silicon years ago so this seems like a good idea to me and have several questions if you don't mind. Is there a black color or just white and clear and which do you prefer - what would be a good release agent for 2-part molds - any idea what the shrinkage percent is, I suppose may vary with thinner amount - any idea what would be a good filler/bulker? The Dow Corning stuff was so expensive that I use to cut up reject molds in small pieces and just add it after mixing - worked great and extended the product. Thanks for sharing!
All great questions. There is a black color. I discuss mold release agaents in another video, look for the title mold release recommendations. yes, it depends on the amouny of thinner. I use cut up silicone also. I do not recommend anything else. Thanks for watching and subscribing.
I am finally going to do this. I am a little scared honestly, but I have my respirator and I will do it outside. I could only find mineral spirits in California. My question is can you do the mixing of the spirits and the silicone in a plastic measuring cup or must it be in glass? Thanks and please wish me luck!
ZipLock bags are chemically inert, so mix in it, like I did in the video.
Wow! Amazing video. Thank You!
My pleasure. Thank you. I have many video on the subject of silicone, check out my playlist. ruclips.net/p/PLmAU7fwOLS3FSvjEzf3OJMHL5a1UO1ayJ
@@GEOsustainable Sure, Thank You!
Thanks for a screaming good video. I have never bothered with gloves or plastic bags. Just knead some 100% Silicone caulk with some corn starch until it starts to firm up, then make your mold.
I might suggest that people make sure your mold is thick enough to also endure you pulling and prying and maybe turning it inside out to get your molded part out. I usually make my molds in a container, sometimes a "Tupper-style" food container or one I fabricate myself out of a plastic milk carton, styrofoam fast food box or other handy scraps. That gives the mold a more uniform shape on the outside for uniform strength. Like when you use your mold, rub that outer container with a thin layer of vegetable oil, baby oil or other "mold release" first.
Awesome, thank you. I am glad you liked. I like your ideas. I made a video on mold release recommendations, and one on pouring. I hope you check them out. Here are the links. ruclips.net/video/gJcTeh4GHA8/видео.html ruclips.net/video/sIQkFVftDZU/видео.html
I should clarify - I knead it with a stick on a sheet of waxed paper.
You changed the mold game. TY, Sir!!!!!
Check out some of my other videos. I have changed a lot of games. I approach every process as it were being scaled up to manufacture. I am glad I could share.
@@GEOsustainable Will do, Sir. LOL LOL. I have already subscribed..... giggles!!
Appreciate the cautions you mention. Cloth being more flammable than the product alone. Did not know it should be watered down. I thought it would just evaporate. Thank you
Yes, the water will evaporate, while rendering the more flammable solvent inflammable, taking it with it. The cloth is more flammable with solvent on it because it volitalizes more easily as the cloth increases the surface area.
Awesome
Awesome video. Thank you so much for all the information!
I am thrilled you like. Here is a new version wherein I make something useful ruclips.net/video/UaVkGWEqPs4/видео.html
Is there an alternative to naptha? We dont have those here, all we have is regular paint thinner, mineral spirit cost a lot since its used in oil painting
Thanks!
Paint thinner will work just fine. Consider subscribing as I will cover this and other thinners in upcoming videos.
@@GEOsustainable ok thanks!
if the silicone uses methylethylketoxime to cure is the cornstarch still going to mix effectively?
MEK is a naturally occuring solvent, recently approved by the EPA as an indirect food additive (whatever that means). I have not used it. The cornstarch should act the same, as a moisture loving additive that cures the silicone, and the short answer is that I have yet to use anything to thin the silicone that affects the cornstarch. The procedure of mixing is critical, and I demonstrate in this video...ruclips.net/video/sIQkFVftDZU/видео.html
That's amazing work!
Looks good !
Thank you! Cheers!
i tied to do a silicone in a tube and cornstarch. but something went wrong. i've seen people also use soap. was it beauce soap, cornstarch and bathroom silicone were used?
Correct, bathroom silicone will not work. You have to use 100% silicone, and look on the back, it has to have the MSDS statment saying ...Acetic Acid is evolved in curing. I did not like the soap method (too messy and I could not control the cure time) but, it does work.
@@GEOsustainable i could of sworn it said the plumming kind was pure. mine just came out like if silly putty and play dough had a baby. i think i'll just use it as a buffer/mattress for when i work with plasticne, or mold it into little critters, stick some fake eyes in it and cast it in resin (or just one big frog)
@@kaiyodei Make a video. I think that may turn out cool.
Thank you so much!
You're welcome! I am so glad you find value in my content.
Thanks for the video. I have a question
What is naphta? In my country we call nafta the stuff we put in cars (but there that's called gasoline right?). I assume it is a paint thinner right? We have mineral spirits and "thinner" (Spanish speaking country) which I believe it is "better quality mineral spirits"
Yes, Naphtha is a common paint thinner, as is mineral spirits. Either will work. All are hydrocarbon solvents. I would not use these as gasoline, as the energy content is far too high for an engine, it will likely explode and break the engine. I recently posted a video wherein I used an non-solvent option, you may be interested in watching. Hope it helps.
ruclips.net/video/Ci28Y3Z3bYU/видео.html
Is this able to be used as food safe molds as well or no?
No, but this video I make food safe mold. Watch here ruclips.net/video/Ci28Y3Z3bYU/видео.html
hope your doing well sir. your lessons will be transferred to the younger generation. Its people like you who make the world go round. Kudos and god bless America!!!
I am thrilled you enjoy. I work hard to bring DIY entertainment to you. May God bless us all. I have a new video i hope you watch and enjoy. ruclips.net/video/conHcaliMik/видео.html
can we use paint thinner in place of minerall spirit, please answer
Yes, they are the same thing, with different names.
Question !!
With the Liquid version can you add acrylic paint to color the mold??
Strangely enough, liquid food color works the best. And the small amount of water you're adding actually accelerates and stabilizes your silicone. So long as you don't go too crazy with it.
will the thinned silicone be more flammable than the corn starch mix after its dried?
Both are rated to 350 F once cured. Both would be considered flammable due to the fact both can be set on fire if a flame is held to them. The thinner evaporates, so it will not be flammable.
oooh thank you for this.
My pleasure. Thanks for watching!
Awesome! Can I pour this into an ammunition box to mold the tips of ammo to keep the sides from hitting and making a rattling noise? That’s my goal.
Sounds like a good project. Thanks for sharing your idea.