Instead of using a box, use Lego which makes it easier to get the first level, then build it further up to the desired height for Stage 1 of the silicone casting.
After researching a number of different options in silicone mold supplies and urethane casting resins, you guys win. Internet commentaries only have good things to say about your products. Very helpful videos too.
Im a ceramicist and I had seen a demo for this and resin casting at a local supply shop. Glad to see you on youtube.. Seen the Reynolds (neighboring states) catalog photo of a cast boat. That definately piqued my interest along with other cool project ideas cant wait to start working with Mold Star. I'm currently sculpting a collection of figurines. Great detail that the silicone cast captures on the orb. Have a great day cheers to the future. 🙂
In general making a two-piece mold like this the seal will be fairly tight but there may be some flashing to trim. I would recommend looking at the follow-up video to this one where we actually cast into the mold. For this mold, the seam comes out quite cleanly.
Make sure the clay is non-sulphur - and if dry, is sealed with Superseal. You can cast silicone into silicone as long as it is the same type of silicone and Ease Release 200 is used.
Mold Star 15 is compatible with a wide range of casting materials. You might want to check with the resin manufacture to see if there is any known issue with platinum silicone or do a small surface compatibility test. Depending on how lightweight you want the piece to be, you could consider our Smooth-Cast 325 (it's what we use in the follow-up video to this one).
Mold Star 15 is a good material to use to mold complex or ridged shapes because of its durability and flexibility. In terms of casting into the mold, there are a number of options including resin, gypsum, concrete, and low-melt metal alloys (up to 450°F).
Hello! I purchased these products to make a two-part mold. I wanted to find out whether an object that needs to be seamless (like a perfect square), would come out seamless if cast from this type of mold. Thank you for any advice. Your videos are helpful.
This is a good idea, but yes, the rubber would seep through and cause problems with demold. Clay is also nice because it stays in place if adjustments need to be made.
I Like to Paint my Source model with the silicone, right before pouring.. I believe it really helps with bubbles, especially in horizontal overhangs.. Brilliant Video xx :-)
Just about anything can be used to make the mold box. We used a clear acrylic for this demonstration for visibility. But the walls could be made out of non-sulfur clay, melamine board, sealed wood, etc. You could ask your local Smooth-On distributor if they have any specific material they recommend or sell for containing walls.
I need to make a mold of a ceramic object. Will this still work? Also, I'll need to glue pieces together, is their any specific glue I'll need? Finally, do you sell harder silicone to make the casted object? Thanks.
Wow, this looks much easier than I anticipated. Now to try it for myself... I'm wanting to make a mold for a dice (a d20 dice) all sides have detail on them, there's not really a 'top' or 'bottom'. what would you recommend doing for placing the spout? Also, can this mold material withstand heat? Say, for heated glycerin soap?
I'm trying to make micro radio control airplanes using this process. What i want to do is take a regular plastic model plane ( like a Revell model ) Make a mold using some material that will be both light and flexible. The plane fuselage will be hollow to allow the micro size electronics to go inside. I need something like a rubberized foam. I like your video on how to make a mold using clay, that helps me alot. If you have any input in what i am trying to achieve it would be appreciated.
i sculpted a car from a non-hardening clay so for structural reasons i didnt clear out the bottom, but on the final model id like to give it ground clearance. so im thinking im going to have to make a mold of it as is, flip it over inside the mold and then sculp out the bottom, and then mold that, with a 2 piece mold like the one in this video. is it okay if sculpting the bottom takes a long time? what's the time window between curing the first half and molding the second half?
How would I make a 2 part mold for beads? I've watched your second video linked at the end, and this one, as well as many of your other videos, and I'm not sure how I would cast a mold for beads. I really want to make my own beads, but not sure how I could replicate them using Smooth-On products. I have the Mold Max 29NV and EpoxAcast 690. Also, do you have a calculator for ensuring the amounts mixed are proportionally correct? I've wasted a lot of epoxAcast 690 due to calculating mistakes.
We do have such a calculator: www.smooth-on.com/support/calculators/#ratio In regards to your other question this is a good question for our tech support team, can you send them a ticket here? www.smooth-on.com/support/ticket/add/agree/ Thanks for watching!
wonderfully made video. Does this work for making shpaes that aren't so smooth and might have a bit of a ridge on them and what could you then fill the mold with after it is complete? Is there a better way to make multiple statues?
Hi! I have a mold shape similar in size to the example in this video. My problem is that the surface is very ornate and has areas that are hard to get at after doing the first half of the mold. It's a repeating pattern...so no avoiding that. I spent a day trying to dig out the clay the first time and the second time I masked the seam area with tape but ended up with an even worse scenario with the silicone leaking onto the surface. So....is there a pro way to mask ornate surfaces AND is there a way to make silicone come off a mold object easier?
Smooth-On I'll explore those options but with the mold I had going, I removed the object from the half mold to clean it as getting the silicone out was impossible. Made makers to ensure alignment when I placed it back it. Got away with it but don't want to have to do that again. Thanks!
Those are clear acrylic sheets, but almost anything could be used to construct a box around the mold. We chose something clear so that you would be able to see the whole process.
I want to try to Make a mold for a taxidermy formy and was wondering if I could use the Mold star 15 and still get a desirable effect. Also I need a sunstance to make the casting hold its shap but still have a little bit of flex.
Hi question: I need to make a full body mold and cast for a newborn doll. Can I do a 2 part mold using 71-20 (I don't have a vacuum chamber) and then cast it with silicone? Should I cast with Plat Sil gel 10 or Dragon Skin? I was told the mold process would be too advanced to get a good solid doll. Is this so?
I have a very complex part with lots of nooks or cavities which are necessary to access some adjustment screws. I was wondering if there is an alternative to clay that pours in, but is easy to remove later when I want to do the second half. I was thinking something like a hard gelatin which could get into all the little compartments, be easily cleared using boiling water. Is there any specific product you can recommend?
I am making a sphere mold like this basically and I believe my product is about the same size, what should the box be I'm proportion to the object to get a good mold? My object is 3 1/2 circumference , I was thinking maybe 4x4x4 for the box?
So I want to make a copy of my bb gun for a project I'm working on. Can I make a mold for half of the outside of the gun and half of the inside of the gun and then pour plastic in between the two molds that I make?
A release agent is necessary where the second half of the silicone mold will be poured against the cured silicone of the first half. It may not be necessary to prepare the original model with release. For advice on your particular project, I recommend opening a support ticket with us: www.smooth-on.com/support/ticket/add/agree/
Is Sorta Clear a good choice for soap molds? Is any shrinkage involved? Mold Max molds shrunk like crazy, so I switched to Mold Star. The Mold Star molds are now starting to shrink. Does the cold weather cause this? Not only that, the newest batch of Part A had a bunch of hardened white stuck to the bottom of the bucket, that basically left white spots all throughout my molds. I am looking for no shrinkage 2-Part Molds.
This video helped me tremendously. I made my first mold and I am at the first part. I let the mold cure overnight but when I went to take the clay off, the mold was still wet underneath. Is that normal?
Hi there! This is a good question for our tech support team, can you send them a ticket here? www.smooth-on.com/support/ticket/add/agree/ Thanks for watching!
a couple questions What is a good transparent silicone to use? where can someone get that release agent? and can that release agent be used on clear RTV silicone 66B, it is used in automotive but i want to make a transparent thin mold of something and dont know enough about it.
what type of clay is ok to use as a seperator when making a 2 part mold? is modelling polymer clay like sculpey and fimo ok to use? what if your actual part is made from baked polymer clay, is it still ok to use unbaked polymer clay as the seperator?
Just curious before I go to my closest supplier, can models sculpted from plasticine be used with this product? Or would I have to re-sculpt it using something else?
what type of clay should I use??? I have some gray clay I thought was sulfur free, but the thin layer of silicone that touches it when mold making never dried ever after 2 days of sitting out
@bondophobic It is always best to run a small test to make sure the material is compatible. Damage to a painted surface may be an issue dependent on the type of paint, age of paint, etc. Our Ease Release 200 is a suitable release for silicone moldmaking in most cases. Jason - Smooth-On, Inc.
Would sand work just as well as clay for packing the bottom or only clay and does it have to be this clay. And how would u make the mold glossy a spray I'm guessing of some kind making it smooth and glossy. Or perhaps a specific kind if silicon molding solution is needed. I'm mak I'll ng a mortar and pestle with uv resin for my bestfriends bday and I cant find molds for ti so gonna make it my self and I love this method very nice.
Hello, I used Mold Star 30 to make a mold of a life-size human skull, but after de-molding the original skull, I noticed there is a small layer of uncured silicone rubber in certain places. It has been almost a full day since de-molding, but those spots are still uncured. Is there any way to fix this by putting it in the oven or using a hairdryer?
You could do that as well, but the clay would have a hard tome clinging to the surface of the orb to create a seal. Smooth Cast 300 may be suitable for your application, but our 65D has a bit more impact resistance.
Yes, absolutely. If you need more detailed assistance, contact our technical support team www.smooth-on.com/support/ticket/add/agree/ Thanks for watching!
This might seem strange but is it possible the finished mold be used for casting the same silicone rubber mold itself? As I may want to create projects made of this silicone material as well.
Mold Making Tutorial: How To Make a 2 Piece Silicone Rubber Mold - RUclips buff.ly/1xILtMf #smoothon #moldmaking
Do not remove the model from the mold.
@@voxel9470 I agree with you.
@@ademengin76310009
Smooth-On How much silicone was used in this? What was the box volume? I want to cast a glass sphere about that size possibly using mold star 15 or16.
Thank you! 👍💓💓
Instead of using a box, use Lego which makes it easier to get the first level, then build it further up to the desired height for Stage 1 of the silicone casting.
better yet: use BlueBrixx or some other Lego-Clone. MUCH cheaper, especially when building larger boxes ^^
Hate using legos
@@tommcelroy6975 why? Works Great
Now thats actually pretty smart....
best, clear, to the point art class ever.
After researching a number of different options in silicone mold supplies and urethane casting resins, you guys win. Internet commentaries only have good things to say about your products. Very helpful videos too.
The illustration in the beginning was great.
Very well done! This video has helped me tremendously for making a two part mold. Thank you so much for doing this.
this is one of the best silicone molding vids i've seen up here...nice work
THANK YOU! I have put off making molds because couldnt get the split concept and how it work.....it's finally dawn for me.....😊♥️💛🧡💚💙💜💗
Im a ceramicist and I had seen a demo for this and resin casting at a local supply shop. Glad to see you on youtube.. Seen the Reynolds (neighboring states) catalog photo of a cast boat. That definately piqued my interest along with other cool project ideas cant wait to start working with Mold Star. I'm currently sculpting a collection of figurines. Great detail that the silicone cast captures on the orb. Have a great day cheers to the future. 🙂
Awesome! Thank you!
In general making a two-piece mold like this the seal will be fairly tight but there may be some flashing to trim. I would recommend looking at the follow-up video to this one where we actually cast into the mold. For this mold, the seam comes out quite cleanly.
Smooth-On what silicone was used in this video? Im looking to get the same grade
I did this but got air bubbles using rebound 25. Do you have any suggestion for me ?
never made a mold before but that idea with the nuts to make the connections is ingenius this makes me want to mold something now :D
Easiest 2 part mold ive watched. Great video.
Glad it helped
Thanks for a great dummy proof video :D My first time making molds and I found your video to be the most helpful!
I am glad this worked out for you!
This is the best step by step i found 👍
Make sure the clay is non-sulphur - and if dry, is sealed with Superseal. You can cast silicone into silicone as long as it is the same type of silicone and Ease Release 200 is used.
Mold Star 15 is compatible with a wide range of casting materials. You might want to check with the resin manufacture to see if there is any known issue with platinum silicone or do a small surface compatibility test. Depending on how lightweight you want the piece to be, you could consider our Smooth-Cast 325 (it's what we use in the follow-up video to this one).
Thanks for the subtitles, I can read English and understand but not when hear it.
I cant imagine being able to read and write in another language. That's so cool!
Great video!! Doesn’t get more simple than you made it in the vid.. thanks for sharing
I'm attempting to make Power Coins for my 1993 Morpher - this video helped a lot - I just need to downscale the project for the small coin. 😃
Thank you! You just solved another problem for me! I am trying to work smarter not harder!
Thanks for watching! 😃
Mold Star 15 is a good material to use to mold complex or ridged shapes because of its durability and flexibility. In terms of casting into the mold, there are a number of options including resin, gypsum, concrete, and low-melt metal alloys (up to 450°F).
Hello! I purchased these products to make a two-part mold. I wanted to find out whether an object that needs to be seamless (like a perfect square), would come out seamless if cast from this type of mold. Thank you for any advice. Your videos are helpful.
Your work is really beautiful, I'm just waiting for the video.
Thanks for watching! 😃
Thank you. Very nicely explained
Thank you for watching! Don't forget to subscribe!
Thanks for outstanding knowledge
I always wondered how to do this. Thank you!
We used a sulfur free clay called Sculptex available from Reynolds Advanced Materials. No de-airing is necessary with Mold Star 15.
Instead of using clay; could sand be used instead? or would the smoothon seep through that?
This is a good idea, but yes, the rubber would seep through and cause problems with demold. Clay is also nice because it stays in place if adjustments need to be made.
Exactly what I needed thanks
Nice vid. Planning a zombie army build with a buddy at work. This will make short work of all the heads and hands. Thanks.
Greetings ✋✋✋!
Wow, very helpful tutorial,
Big like, keep safe &
Keep connected!
wow, that was incredible tutorial video. thank you
Use Sculptex or Chavant NSP - both good Non Sulfur modeling clays.
Amazing tutorial. Thank you!!!
Thank you for watching! Don't forget to subscribe!
would love a mold making tutorial on two part molds for four legged objects like a horse. love your videos clear presentation and your product
Great idea! Thanks for watching, and don't forget to subscribe!
thanks! i thought I was subbed on this ojne, but it's on my other account! subbed here too!
I Like to Paint my Source model with the silicone, right before pouring.. I believe it really helps with bubbles, especially in horizontal overhangs.. Brilliant Video xx :-)
Thanks for sharing!
Just about anything can be used to make the mold box. We used a clear acrylic for this demonstration for visibility. But the walls could be made out of non-sulfur clay, melamine board, sealed wood, etc. You could ask your local Smooth-On distributor if they have any specific material they recommend or sell for containing walls.
You read my mind! I was just about to ask!
@SmoothOnInc Thank you, i have one more set of questions,
The level of importance on what is needed is:
Transparent
I need to make a mold of a ceramic object. Will this still work? Also, I'll need to glue pieces together, is their any specific glue I'll need? Finally, do you sell harder silicone to make the casted object? Thanks.
Very Helpful, I just bought a Starter Kit from you guys!
Perfect video- Thanks!
Now, is there a way to reproduce the mould if you wanted to sell them?
Can you send us a tech ticket? Our team can help you - www.smooth-on.com/support/ticket/add/agree/
Wow 😮 This is very helpful! Thank you!
Thank you for watching! Don't forget to subscribe!
Hello could you tell me please, on how many castings from plastic lack silicone forms from mold star 16 fast?
I did some further research, and ended up sticking it in the oven at 200°F for 5 hours, which made any of the uncured rubber finally set.
Wow, this looks much easier than I anticipated. Now to try it for myself...
I'm wanting to make a mold for a dice (a d20 dice) all sides have detail on them, there's not really a 'top' or 'bottom'. what would you recommend doing for placing the spout? Also, can this mold material withstand heat? Say, for heated glycerin soap?
very nice work, good job
Thanks for watching! 😃
would this do any damage to a painted object, or a Bakelite object? would you recommend waxing the object before you pour the liquid over it?
I'm trying to make micro radio control airplanes using this process. What i want to do is take a regular plastic model plane ( like a Revell model ) Make a mold using some material that will be both light and flexible. The plane fuselage will be hollow to allow the micro size electronics to go inside. I need something like a rubberized foam. I like your video on how to make a mold using clay, that helps me alot. If you have any input in what i am trying to achieve it would be appreciated.
i sculpted a car from a non-hardening clay so for structural reasons i didnt clear out the bottom, but on the final model id like to give it ground clearance. so im thinking im going to have to make a mold of it as is, flip it over inside the mold and then sculp out the bottom, and then mold that, with a 2 piece mold like the one in this video. is it okay if sculpting the bottom takes a long time? what's the time window between curing the first half and molding the second half?
I swear the music from this is in Spiro the dragon...
i need track nameee
Thats what said!!!!!! 🤣🤣🤣🤣🤣🤣🤣🤣🤣
When the cast is cured after the 4 hours, does it have a smell it it ? If it does, what does it smell like and would it last forever ?
How would I make a 2 part mold for beads? I've watched your second video linked at the end, and this one, as well as many of your other videos, and I'm not sure how I would cast a mold for beads. I really want to make my own beads, but not sure how I could replicate them using Smooth-On products. I have the Mold Max 29NV and EpoxAcast 690.
Also, do you have a calculator for ensuring the amounts mixed are proportionally correct? I've wasted a lot of epoxAcast 690 due to calculating mistakes.
We do have such a calculator: www.smooth-on.com/support/calculators/#ratio In regards to your other question this is a good question for our tech support team, can you send them a ticket here? www.smooth-on.com/support/ticket/add/agree/ Thanks for watching!
wonderfully made video. Does this work for making shpaes that aren't so smooth and might have a bit of a ridge on them and what could you then fill the mold with after it is complete? Is there a better way to make multiple statues?
Wish everyone stay safe. I do sculpture in Vietnam 🇻🇳 😍😍😍😍
Hi! I have a mold shape similar in size to the example in this video. My problem is that the surface is very ornate and has areas that are hard to get at after doing the first half of the mold. It's a repeating pattern...so no avoiding that. I spent a day trying to dig out the clay the first time and the second time I masked the seam area with tape but ended up with an even worse scenario with the silicone leaking onto the surface. So....is there a pro way to mask ornate surfaces AND is there a way to make silicone come off a mold object easier?
+tibor warski You may want to try a film producing sealant like PVA or clear acrylic spray.
Smooth-On I'll explore those options but with the mold I had going, I removed the object from the half mold to clean it as getting the silicone out was impossible. Made makers to ensure alignment when I placed it back it. Got away with it but don't want to have to do that again. Thanks!
como se llama el materiao
Those are clear acrylic sheets, but almost anything could be used to construct a box around the mold. We chose something clear so that you would be able to see the whole process.
I want to try to Make a mold for a taxidermy formy and was wondering if I could use the Mold star 15 and still get a desirable effect. Also I need a sunstance to make the casting hold its shap but still have a little bit of flex.
Hi question: I need to make a full body mold and cast for a newborn doll. Can I do a 2 part mold using 71-20 (I don't have a vacuum chamber) and then cast it with silicone? Should I cast with Plat Sil gel 10 or Dragon Skin? I was told the mold process would be too advanced to get a good solid doll. Is this so?
Is this product for wax castings as well?
I have a very complex part with lots of nooks or cavities which are necessary to access some adjustment screws. I was wondering if there is an alternative to clay that pours in, but is easy to remove later when I want to do the second half. I was thinking something like a hard gelatin which could get into all the little compartments, be easily cleared using boiling water. Is there any specific product you can recommend?
Can you tell me what kind of clay is this? Any clay will do? or is it special clay for casting purposes, can I buy it on your website?
I am making a sphere mold like this basically and I believe my product is about the same size, what should the box be I'm proportion to the object to get a good mold? My object is 3 1/2 circumference , I was thinking maybe 4x4x4 for the box?
Love the video. Thanks. How is the clay funnel not detaching from the model and starting to "float" once you pour the silicone?
The clay is tacky enough to stay in place.
So I want to make a copy of my bb gun for a project I'm working on. Can I make a mold for half of the outside of the gun and half of the inside of the gun and then pour plastic in between the two molds that I make?
This has been a great help, thank you.
Would this process also be ideal for a one-piece mold
Hello can I use something other then clay for molding and do I have to use release agent I don't want to ruin the original
A release agent is necessary where the second half of the silicone mold will be poured against the cured silicone of the first half. It may not be necessary to prepare the original model with release. For advice on your particular project, I recommend opening a support ticket with us: www.smooth-on.com/support/ticket/add/agree/
Is Sorta Clear a good choice for soap molds? Is any shrinkage involved? Mold Max molds shrunk like crazy, so I switched to Mold Star. The Mold Star molds are now starting to shrink. Does the cold weather cause this? Not only that, the newest batch of Part A had a bunch of hardened white stuck to the bottom of the bucket, that basically left white spots all throughout my molds. I am looking for no shrinkage 2-Part Molds.
Love this and want to try it. Can you tell me where I can purchase the orb used for this tutorial. Thank you.
This was from a home decor store.
Very nice demo! Ty 💕👍🏼
Thank you for watching!
This video helped me tremendously. I made my first mold and I am at the first part. I let the mold cure overnight but when I went to take the clay off, the mold was still wet underneath. Is that normal?
Hi there! This is a good question for our tech support team, can you send them a ticket here? www.smooth-on.com/support/ticket/add/agree/ Thanks for watching!
a couple questions
What is a good transparent silicone to use?
where can someone get that release agent?
and can that release agent be used on clear RTV silicone 66B, it is used in automotive but i want to make a transparent thin mold of something and dont know enough about it.
can this be done with amazing mold? the pink silicone rubber?
what type of clay is ok to use as a seperator when making a 2 part mold? is modelling polymer clay like sculpey and fimo ok to use? what if your actual part is made from baked polymer clay, is it still ok to use unbaked polymer clay as the seperator?
What mold making compound would be best if the original is soft or fragile? I am hoping to make a mold of plaster baby hands
Just curious before I go to my closest supplier, can models sculpted from plasticine be used with this product? Or would I have to re-sculpt it using something else?
Can I use Sorta Clear food grade silicone in this same mold process?
great video, thanks so much
what type of clay should I use??? I have some gray clay I thought was sulfur free, but the thin layer of silicone that touches it when mold making never dried ever after 2 days of sitting out
@bondophobic It is always best to run a small test to make sure the material is compatible. Damage to a painted surface may be an issue dependent on the type of paint, age of paint, etc. Our Ease Release 200 is a suitable release for silicone moldmaking in most cases. Jason - Smooth-On, Inc.
Greetings, my question is can this mold be used on very small (0,2-2 inch in height) plastic models?
Awesome! Thanks!
Would sand work just as well as clay for packing the bottom or only clay and does it have to be this clay. And how would u make the mold glossy a spray I'm guessing of some kind making it smooth and glossy. Or perhaps a specific kind if silicon molding solution is needed. I'm mak I'll ng a mortar and pestle with uv resin for my bestfriends bday and I cant find molds for ti so gonna make it my self and I love this method very nice.
Can it be used to make personal soap molds?
Hello,
I used Mold Star 30 to make a mold of a life-size human skull, but after de-molding the original skull, I noticed there is a small layer of uncured silicone rubber in certain places. It has been almost a full day since de-molding, but those spots are still uncured. Is there any way to fix this by putting it in the oven or using a hairdryer?
You could do that as well, but the clay would have a hard tome clinging to the surface of the orb to create a seal. Smooth Cast 300 may be suitable for your application, but our 65D has a bit more impact resistance.
where can i even buy the stuff to make the box that is not an online store?
That is perfect! Thanks for sharing
Thank you for watching! Don't forget to subscribe!
It is definitely a possibility to make a 2-part mold of a Harry Potter style wand.
P.S. Your videos are amazing.
Currently looking into to making a mold using a resin bust. Is this method doable using a resin object?
Yes, absolutely. If you need more detailed assistance, contact our technical support team www.smooth-on.com/support/ticket/add/agree/ Thanks for watching!
Can you cast into the mold with silicone as well? Or will it start to connect and stick together??
thank you very much!
Instead of clay could you use Play doe instead? Just curious.
I recently ordered some moldstar 15 on Amazon.
As long as the clay is sulfur free and compatible with platinum silicone, it would work.
@@smoothon thanks!
Btw great products! I will be purchasing more and different types.
Grat video .Thank you very much
This might seem strange but is it possible the finished mold be used for casting the same silicone rubber mold itself? As I may want to create projects made of this silicone material as well.
Yes, as long as a release agent such as Ease Release 200 is used.
Awesome! BTW I got a question. How can we make a silicone mold of something that has holes? Like for example, the lid of a salt shaker?
Can you send us a tech ticket? Our team can help you - www.smooth-on.com/support/ticket/add/agree/
Cool video! Have you thought about injecting?
You will need to have pins or similar supports attached to the core which keep it centered in the mold.
any natural releasing agents which can be used?