Resin Casting Tutorial - How to Cast Resin
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- Опубликовано: 12 авг 2019
- Things I cover: pressure casting resin using a pressure casting pot (pressure casting chamber) with Smooth On resin, pouring two part resin, cast resin mold, demolding, and mold release for resin. This is geared towards designer toys, but can be applied to anything like resin jewelry or resin crafts. This is part of a series where I go over the mold making and resin casting process.
Here are links to the tools and materials used in this video:
RESIN:
Smooth-Cast 300, Casting Resin (pint kit): amzn.to/2ITXHME
Smooth-Cast 300, Casting Resin (gallon kit): amzn.to/2RECY2c
PRESSURE CASTING SET UP: Pressure pots are made for spray painting and have to be modified for this process. I have the 5 Gallon but also linked the 2.5 if you’re doing smaller work. I actually wish I had a larger unit:
5 Gallon Pressure Pot: amzn.to/31DLWQP
2.5 Gallon Pressure Pot: amzn.to/31zQFmC
Porter-Cable Air Compressor: amzn.to/2YMESVl
RESPIRATOR: I use a North respirator with a gas and vapor cartridge. Make sure the mask fits your head size: Small/Med/Lrg.
Respirator: amzn.to/2yFvWkQ
Cartridge: amzn.to/2YJcyhr
Smooth-On Universal Mold Release: amzn.to/2Xaxihk
6” Stir Sticks (box): amzn.to/2Hh553F
Cool Plastic Stir Stick Upgrade: amzn.to/2Z2u68G
On top of an assortment of rubber bands- a bunch of these large ones always come in handy: amzn.to/2KwhKkU
The silicone I used for the mold is:
Mold Star 15 Silicone (pint kit): amzn.to/2NhaahA
*as an Amazon Associate I earn from qualifying purchases :)
You can check out Part 1 of this series where I make the silicone mold here:
• Silicone Mold Making: ...
Thanks for checking out my work!
You can always see what I’m up to here:
steveferrera.com/
/ steveferrera 
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Thank you so much for "small-figure-beginner-crafter-friendly" tutorial. Also for the great tips for crafters that do not have all that fancy equipment and in any case don't need it for the scale that we do molds and casting, but really need to know the essential stuff to still mold and cast successfully! I'm greatful for people like you on RUclips!
Thanks for watching !
Great series of videos on casting and mold making - can’t wait for the fuller video on negative and positive pressure utilisation in molding and casting. Thanks a bunch
Amazing new series of tutorials. The explanations are very detailed. As someone who’s thinking about starting sculpting and casting I can’t thank you enough!
Thanks for watching!
This is the chemistry I like. To the point and practical!
thanks!
Yours are some of the absolute best tutorials on RUclips of any topic, Steve: concise, informative and very clear instructions 👍 (some folks ramble, mumble or a combo thereof ). You get right to the point! 🙏😊
awww thanks!
This is an awesome video! Incredibly thorough explanation - thank you! I've saved it for future ref & will be back to watch again. Keep up the great work!
thanks for checking it out!
Very cool video. I love that the resin turns white, it looks so good. I think I just might try this.
Another fantastic video. I've found Steve's mould making and casting videos to be the best on YoutTube.
This is amazing! Thank you so much for your videos. Each and every one is so detailed and helpful! I’ve been thinking about casting for some time and after you’ve explained the process so well I might actually do it.
Thanks for watching :)
This is the best tutorial I have seem about casting, and your way of explaining the process is also very relaxing and easy to digest. Thank you so much for such a hard work 😊
You're very welcome!
OMGOSH! Truly amazing! Awesome details! Me got to get brave enough to try this. Toodles debs from Texas
Casting and making molds loads of fun!
Pressure casting is the way to get great results 👍🏻
yeps!
this is an extremely thorough tutorial, great video
Thanks for watching :)
A different world to the world of resin casting that i worked in for 35 years. No use of the degas chamber, that was always my go to, the way i was taught. And such abundance of rubber and resin. Here in the uk it is very expensive, so we make the smallest molds possible, using the smallest amount of resin possible, no guesing in plastic beakers, all of our resins are weighed out gram for gram. I liked the elastic bands, that is the way i always held my molds together.
A good tip for getting rid of flashing in the mold after casting, I use masking tape to grab all the little bits of flashing. Works fast and grabs all the little bits that tend to stick because of static cling..... I just found your videos and I’m totally impressed with your skill and your ability to teach.
awesome! I'll try it. I hate picking out the bits
Toujours au top je vous suis depuis la france. C’est un vrai plaisir !! J’attends la prochaine video avec impatience.
Thanks for watching!
Great tutorial, love your work
Tanya Yapor thanks!
This was incredibly helpful, thank you
Glad it was helpful!
Very informative! Thank you for all the great videos and walking through each process. Cheers!
Thanks for watching :)
This is so helpful and well produced. thank you so much!
Thanks for watching :)
"A vibrator .. that you would use on your back?" 🤔
Regarding the depressurization, I use a yellow plastic coil hose (with quick connect) and set it up to degas out the window. It saves on hauling the pressure pot outside since my studio is far from any doors.
for sore muscles :)
Very helpful video thanks very much for taking the time to put it together.
I use the Smooth Cast 300 and Mold Max 30. I really want to try a pressure pot. Thanks!
Great video. It would have been great if there was as much info in the mould making vid. Like why you cut the mould diagonally, show how you cut it and how and how you make the little nodules and holes so the mould fits together nicely.
flash tape works amazingly
I just discovered your channel, cant stop watching
Thanks for watching :)
Th... This was the first video I've ever watched on this channel.
I'm already scared.
and subscribed.
Same. If you like this, Check out TheCraftsman. He's the best ever.
I know Im asking randomly but does someone know of a way to get back into an Instagram account..?
I somehow lost the account password. I would love any help you can give me
@Emerson Jedidiah Instablaster ;)
@Lane Drake i really appreciate your reply. I got to the site thru google and Im in the hacking process now.
Looks like it's gonna take a while so I will get back to you later with my results.
@Lane Drake It did the trick and I finally got access to my account again. I am so happy!
Thanks so much you saved my account :D
Great tutorial!thanks.
Excellent video!
thanks!
I love your artistic style
thanks!
I haven't even casted anything yet just absorbing as mush knowledge as I can before trying to cast my first project. I think I better start small. The pressure pot looks like a good idea I think I saw something like that around my brother's shop. Not shire if it was a pressure cooker?
So much good information
:)
nice practical overview. and good that you mention the use of a respirator! but - the isocyanate (Part A in this case) is cancerous on its own, not only when it reacts. a thing to keep in mind when you're mesuring by volume and have all those extra cups flying around
good to know- last thing I need is more chemicals
Air bubles are mostly removed for pieces that are transparent. They don't matter much for opaque pieces. Nice designs!!
unless they're on the surface- then it's the swiss cheese effect :)
Great tutorial! Thanks!
Thanks for watching :)
Great tutorial video👍
Thanks for watching :)
Very informative! Many thanks indeed! 👍
Thanks for watching !
Nicely done
thanks!
similar to a rubber band, however with even better control of the tightness is self adherent bandages. ya know those wide elastic bands you would wrap around a sprain. try those out.
hmmm. interesting idea
This was so incredibly helpful and super informative, and yet slightly overwhelming all at the same time! Lol but seriously...what have I gotten myself into 😬😬😬
thanks! good luck!
Literally the best video for casting liked subscribes and his the bell your awesome dude!!!! Thanks!!!
thanks for watching !
Yes I agree with putting the mold back together and filling it up with a substance but I would not use water as a can damage your final product if we don't get it a fully dry or you can leave fuzz balls behind with the towel or rag he used to dry it up. I actually use small beads. or u can use rice
yep :) I use rice
Thank you for the video and information amazing tutorial! One quick question, how much psi is used for the pressure casting method? And would you recommend running the compressor first and storing the air in the compressor and then slowly letting it fill into the pressure pot or as you did in your video just turn compressor on and let it fill the pot up to what pressure? Thank you hope my question make sense!!!
artist24seven I go anywhere from 40-55 psi. And I always preload the compressor. To about 150psi. So it only takes about 5 seconds for the pot to fill :) thanks for watching !
Hey Steve, I am casting a bunch of trays in Smooth on 300 resin (trays that can have multiple uses, like holding pencils, makeup, smoking paraphernalia etc) and am worried about how toxic the material is. While it is not food safe, how toxic would you consider this resin to be? and is there some kind of coating I could use or other resin material that would be more friendly to bedroom / bathroom environments where I imagine the trays would live? I know the resin is flammable, but I am just wondering if the gases released from the hardened resin are actually dangerous and should not come into frequent contact with people in their homes, or if its really not that much of an issue... Let me know! Thanks
Thank foe the video, Iam still learning this stuff, so maybe you now, if i only fill half of the mold and its cured can I add more resin on top, will it adhere to the cured part seamlesly, you now, like silicone does. Thanks.
Mr. XYZ yes pretty seamlessly. You might see a tiny line but it can be sanded.
Thank you for amazing info .
Thanks for watching :)
This was VERY helpful
thnaks!
I would use my Dremel engraving tool to vibrate the mold.
I'm trying to construct a little vibro-table :)
Thank you for this video
Thanks for watching :)
very informative..thank you
Thanks for watching :)
Hi! Thank you for such an informative video. I am wondering if you can cast with silicone also using a silicone mold somehow??
ive seen examples using different silicones
This video was more informative than the video Smooth On made for casting
good to hear :)
Does the heat from pressurization help with the cure? Most interested in the thinner parts you highlighted. I imagine the mold is insulating so I would not be surprised if there is minimal thermal effect?
not sure- i always try to let mine sit overnight to be safe
Great video. I have to confess that this is the first time when, seeing one of these, I've realized that "pressure casting" actually means what it says. I always assumed that it was actually vacuum, which would (in my mind) motivate the air to work its way out. Thanks for making it obvious enough that even I realized what was being said.
vacuums are often used to degas silicon or resin before pouring so your assumption was pretty spot on
You could measure the volume you need after your first cast by measuring the displacement of the cast in a cup of water
i like that idea
Can you add dye to the resin before you set it?
THANKS for sharing your experience but wouldn't be better a vacuuming than positive pressure for getting rid of the air bubbles ???!
it's a weird physics thing. The pressure actually implodes the bubbles. I'm not sure of the reverse logic- maybe vacuuming doesn't get into odd shaped cavities? Like it would have to vacuum in one upward direction? just guessing...
Brilliant video. I will subscribe 👌
How did you block the stringing cap on the pressure pot? As I can see it has been removed. Thanks
I epoxied a bolt in there and then sealed it a bit extra with magic sculpt on both sides. Make sure it's solid- don't what the pressure to blow it out and take out your upstairs neighbor :)
super cool, thx
Wow, ~~~~~it's the best.👍👍 👍👍
Love your intro videos lol
what type of filters on your respirator? Also, very well done video, clear and well paced and very informative!
I get the filters that remove dust and fumes. Thanks for watching :)
great vid!
Thanks for watching :)
How did you modify the pressure pot for this application? I just ordered the one you linked. Thanks!
I epoxied a giant bolt in the lid. super important to make sure it's in solid. Don't want the pressure to blow it out and donk you on the noggin :)
Hi Steve, love your videos!. Question, once you cast and get air bubbles what do you use to fill those air bubble gaps or holes?. Your answer would greatly be appreciated.
magic sculpt :)
I was wondering if you re-used the cups that you use to mix resin parts or how to properly discard them or if you just had a corner of your shop filled with plastic cups lol.
yep, I reuse the one that wasn't mixed in. so each mixing uses one cup. and if they both get poured into the larger container they both can be reused. but regardless, at the end of the day, I somehow have a corner filled with used cups :)
How do you remove the bump thing created by the pour spout from the object once you remove it from the mold? Does it need to be sawed off?
Janine Kurzinger yes sawed and sanded
Another Incredible video, once the figures are cast are they still 'toxic' or is it just in liquid form? I'm thinking of casting some for a child to play with but want to be sure
Pretty sure they're non toxic- but I don't think I'd let my kid chew on them. Prob best to check with Smooth-On. get their specs :)
Thanks
Does using the pressure casting method eliminate the need to tilt and gently knock the cast to remove bubbles which you did when you did not use the pressure cast method?
yep- for the most part. A lot of times I'll still bang them a bit right before they go into the pot- I think it helps for larger bubbles.
Does the baby powder change the surface texture of the casting? If you were casting something that had a very glossy finish would it stay glossy with the baby powder or would it become matte?
it might effect a clear resin- keep it from being shiny- but with the white resin it doesn't effect the surface texture at all- as long as it's a very light dusting that you blow out
Could you tell me please if I can glue together the part of the casts with the same epoxy I'm casting it? I just have the sculpture that cant be put in a single mold.
definitely. but I would probably just use a 5 minute epoxy- faster set time- and thicker
Do you have a video on making the molds?
yep! scroll through my videos here... you'll see them
could I use an average, cheapo airbrush air compressor for the pressure pot? I think it can go up to 40 psi with the airbrush
I use 50-55 for the resin. I think 40 is a bit too low
Hey, can you please tell me what would be the best way to cut through the PVC, ABS plastic that Banpresto uses for their figures?
I use Exacto's little hand saw. sometimes my dremmel cut disc if I'm feeling ambitious :)
Your link to a 2.5 Gallon Pressure Pot from the description directs me to a vacuum chamber, and I'm wondering whether you meant to call it a vacuum chamber, or if you provided the wrong link to a smaller pressure pot. Thanks!
Hmmm. the link takes me to the TCP paint spray pressure pot. Not sure what's up...
@@SteveFerrera I am so confused, I could have sworn that the link was wrong yesterday but you're right it goes to the right place. Sorry for the bother, but thanks for the reply!
Can you place the reading and silicon mold in a pressure chamber instead of vibrating?
yep. that's what I do 90% of the time. This was just an example of how it isn't always necessary with some simple shapes.
How would you do this for a helmet ? I dont want to slush cast.
Also, how many casts can you make with the 1 mold and how do maintain the cast?
I usually get about 30 to 35 good casts. you mean maintain the mold? I just keep them in a cabinet in my studio. They have a long shelf life.
How would i add colors or dried flowers to these if its inside the mold? Can you tell me or link me to a video explaining it?
just carefully insert it- can also hold in place with a wire then pull out before it sets
is it possible to use this technology on burrow made with sand(like sands from beach)?
hmmmm. I don't see why not.
If you use pressure casting on silicone mold that's made without vacuuming, would it cause problems? since more people already has air compressor than having to buy vacuum pump, I've seen people who casted with cooking pressure pot and pumped with bicycle pump and they seemed to work, but I've no idea about the possibility that the air bubble inside the mold might collapse under the same pressure the resin was cast
yes problems... silicone has to be vacuumed to work. otherwise the air pressure pushes the resin into these tiny tiny (so tiny you can't see them) bubbles that are on the inside surface and you end up with a weird but cool tiny bubble texture on the resin. I specifically cast a piece like this for my deep dive video on this stuff (stay tuned). Yes, I've seen people use one set up for both, but i feel like it's more efficient to use separate systems :)
@@SteveFerrera but besides this ... would the bubbles inside the silicone (those that would not touch the resin) cause problems?
does this stuff react with wax or plaster? does it stick to plaster? because I have a multi part plaster mold with gaps I intend to fill with wax.
I see lots of ceramic artists use silicone to make molds of their molds with plaster. wax is not recommended because of the higher melting temps- but there are silicone rubbers specifically for wax.
I have been trying to cast some very small parts, with a 24 hour cure time. How do you get the mold to fill all the way. I get bubbles at the very bottom most part that never rise out. How do I get the mold to fill in completely?
The Noob Woodworker I pressure cast my resin and degass my silicone. No bubbles :) look for a video demo soon
Make sure that you don't have un-vented undercuts to start with. Do what Steve did by dusting the mold with talc first. Then heat up your mold in the microwave or oven until it is about 50 centigrade. While it's warming up, heat your resin (before mixing) also, until it is noticeably above room temperature. Mix, and pour to 1 third full and slosh it around the mold. Pour back out which will leave the inside thoroughly coated. Now fill back up slowly while still warm. It should make a marked difference.
How did you put in the registration keys in the molds of the larger pieces?
usually I just use the end of a sharpie :)
Question...could you cast an object in a mold out of a resin that will stay clear with no impurities?
yes, but it's more complicated than it sounds. lots of little tricks to get it clear and shiny- but nothing you can't figure out. pretty common nowadays in the designer toy world :)
Is this kind of resin flammable? If I make candle holder sculptures are they safe?
not flammable- should be fine as long as flame isn't too close
I make sprues out of cocktail sticks to a avoid air pockets
How easy is this method for casting very thin pieces like aircraft wings?
not the greatest. injection molds would be best for that- but that's a whole nother can of worms.
Hello, I'm have both the metal (original ring) and a wax carving of that same ring - the ring is 18k gold, I also have one that is pure silver... is there anyway to cast either of those (gold or silver) into a resin? Does a resin with high enough heat resistance exist? Pure silver melts at around 1800 degrees and gold at around 1900. If there isn't a resin for that, do you have any suggestion on something that I can make a mold out of that is similar to these type of projects that you do?
Jewelry casters use hi temp investment materials- then pour the liquid metal into the mold- often with centerfuge casting. There is a rubber material that can handle lower temp metals like pot metal and pewter- but I wouldn't reccommend for details like rings. I think the only way to achieve that is to do it like a professional jeweler. It's a one use investment- that you have to break open to get the ring.
How do you repair air bubbles holes on the resin casts?
I use an epoxy clay called Magic Sculpt :)
Could we use baking flour instead of talc? Thx
ive never tried it :)
steve, any reason why you aren't posting anymore?
It was a lot of work for not much pay off... but I'm coming back! stay tuned.
@@SteveFerrera oh!
I completely understand why you left and if you just post one video then leave, I support you completely.
However, I am very glad to hear you will be making more videos in the future.
How did you make the green rubber mold?? What material is that??
It's a Smooth-On product called Moldstar. Check out some of my other vids- I go into details
Can you put dye in the resin to color it?
Trace Ridlehoover yes. Dyes work best with the clear resins. But the whites can be colored too
hello can it use with hot things such as paraffin wax ?
it's not recommended for waxes- but there are specific rubbers for things with higher temps like paraffin and micro-crystalene waxes.
i use pressure caster too .. but how to eliminate those bubbles on top of the model? theres a ton of bubbles there. even tho i put it into pressure cast. other mold is okay.. but this mold seems a lot of bubbles even in pressure cast
Problems with bubbles on the top of the cast. Or the top of the pour(so the bottom of the figure)
do you vaccum your silicone? sometimes there can be tiny bubble in mold surface you don't see until the pressure cast pushes resin into them.
how many casts will you typically take from a mold you made?
about 30- but depends on how much fine detail and thin parts there are- also large masses will heat up more and degrade it faster
Could you please drop a link for the 1 gallon kit? I'm searching and searching and cannot find it.
in the description :)
can i reuse the these jiggling molds multiple time ?
i usually get 30 to 35 casts per mold
TQ