Transforming a Solid master part into a Thin Walled Hollow cast resin part
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- Опубликовано: 9 янв 2018
- Mold Making: Molding a solid part to a thin walled hollow part. Check out the Lasagna Trick I use and the 2017 Bonus Eclipse footage at the end.
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Genius. This is the best way I've seen it done
THANK YOU ERIC!
Extremely clever!
I have been wanting to cast my own miniature model houses that need to be hollow on the inside. This video is a game changer! Thank you so much!
This is truly amazing. Thank you🙏
Excellent demonstration!
Thanks, feel free to share with the world on social media
I watched this a while back but am getting ready to try casting a piece I want thin walled like this... so I came back for a quick review... appreciate the info!
Really good idea - very useful - Thanks!
looks great
Nice easy to follow video. Thanks for making this. Saved and subscribed.
Thank you so much for this video.
Im trying to make hollow ceramic mushrooms and im having a really hard time figuring it out.
I dont want it to be crazy heavy for one, but I also might want to be able to fill it with something. Im having so much trouble. I think your video has helped me grasp the basic concept thou and I appreciate it.
I pray your staying safe out there.
✌ ✝ ❤
this is super cool and also very clear. I will try this for sure. You earned a subscriber
same ! just subscribed :)
I really like this. I have a injection molded shoe polisher that I need to clone and modify and this will work great!
Edit: Well worth the sub!
Adam Smith Thanks for the sub. Really appreciate that
HOLY CARP 🐠 YES...I APPRECIATE YOUR WORK!
Cool.
Once you have the silicone weep mold for the epoxy, that's what you can use over and over again? This is super. I also eat lasagna.
Correct
Great video! Thanks. What resin would you recommend for something very thin but strong? Casting a thin walled costume helmet.
thx for the video. i was wondering would a 3d printer not print a hollow mould instead of the master part then you could make a rotational mould to create the part.
Sho woulda been nice to see the final product photos of what it was used for? Bat mobile? Butter dish? So need to know.
Color samples for automotive, the green one is a sample of that. Don't have any display samples used at trade show, I would like have that as well. Thanks for your comment, feel free to share on social media. BTW what web site is running this video right now?
I love this. Pro work always inspire me and little bit depressed because i'm not there. But i will be. I hope soon....
What clay do you use for working? What clay was this you use to ensure the cast? i have some difficulty finding a properly clay. Elastic enough, hardly enough, but and soft in the same time. I use some clays for experiment and testing. I test even sculpey clay. It's not bad but i looking for something more natural and close to the natural clay. Once again - good work!
use a non sulfur based modeling clay.
@@EricStrebel any particular brand you like?
I have no idea why using clay never occurred to me before - it's so common to use for other two part casting methods!
Thank you so much great vid. make more lots more ...
Hi Eric, thanks so much for your video. I learnt a lot. I wanted to ask what if I didn't inject enough resin into the mould, is there a way to fix the problem after the resin is cured?
Nope
what type of clay are you using in this process? Thanks so much for your informational videos!
I am using a surfer free modeling clay, nothing special, just needs to be sulfur free so the silicone sets up against it. andrew machulski thanks of the question.
nearly 10k :D
Carlos Pitcher Yes, very soon! Excited about that milestone :-)
Hmm how about if the part needs some support structure like the inside of climbing holds? And thanks for sharing 👌
lol. I'm here for the same reason.
You would have to build those ribs into the master model or whatever other details the part needed before you cast it it probably would not be a hollow part
You would have to build those ribs into the master model or whatever other details the part needed before you cast it it probably would not be a hollow part
Hi Eric! Thanks for your nice sharing! I have a question: what 3d printing technique you use to get the surface of solid part so smooth?
FDM parts was painted and sanded to create the master part
Hi there, great video. I love the explanation. What did you use to keep the silicone parts from sticking to each other in the mold?
Use Vaseline. You can warm it to thin it out.
Vaseline thinned with naphta, should be in the video
I enjoy carving pumpkins at halloween and use the craft ones. For a few years i have been wanting to learn how to make a mold of a few different pumpkins so that i can have variety. I have never made a mold in my life that being said i have done many things i never thought i could do because of a tutorial. Im just a hobbiest and am looking for any advice you could give. This tutorial looks like something to follow if i wanted to make a hollow pumpkin for carving. Instead of filling this with a resin could it be filled with a rigid polyurethane foam that i could carve and even shade. Also im at a loss on what kind of materials to purchase to do this. I apologize if im not being clear on what i need to do. Thanks for any advice you can give.
Did you ever figure out how to do this? I’m looking to do something similar.
Have you tried vacuum forming? That is the way to go with a simple plug that has smooth surface with no detail. Much faster, simpler and just as good results.
It's not appropriate for this project The parts are much too flimsy they feel cheap and they can't withstand the post finishing process.
@@EricStrebel You are thinking disposable food tray type vacuum forming. There's much more than that.
@@freddyrosenberg9288 yeah, your right but the vac formed parts can't take a baked automotive finish.
Good work Eric. What did you putt between two mould parts so they don't stick together when you putt second part of the mould. Thanks
Vaseline mixed with naptha, works great.
Eric Strebel what are the proportions like for this mixture? 50-50? Also can this technique be used for any casting process that we want hollowed our? Say like a hollow body prosthetic like a finger?
Try 70/30 mix
question for you, could you have, and if so why not, 3d printed the second mold vs. the clay ?
No data was available for the project, only had the one part. Perhaps it could have been done if we had data, but I would have just shelled the part in cad to the thickness I wanted, if I had data.
@@EricStrebel thanks ,was curious as i havent worked with clay but my 3d printing skills are pretty sharp
Hi there. This video is really cool and interesting, but I'm wondering if the same sorta idea is possible at a much larger size. I have a large art project I'm working on where I need to reproduce a large qty of large hollow faceted crystaline type structures. Does anyone here have experience with such things?
Can I use this method to cast a skull with a hollow inside it?
that is chavant J series clay correct?? I can't think of oil based doing like that.
Mark Ernst NSP soft from Chavant
Hello. Just wondering can this technique be used when casting body prosthetics that I want hollow with platinum silicone? Or will it only work with a certain kind of resin and certain kind of shapes?
Should work on anything, try it!
Eric Strebel hey thank you for your reply! Do you have any videos that can show how to make one product with different softness silicone in one sculpture? What are the techniques you might suggest to achieve that?
Great Video! Would it be possible to recreate this process with clay, using plaster instead of silicone for the mold?
If not, any tips on how to achieve a similar result in clay/porcelain? Thanks again!
Yes I think you could use the plaster instead of the silicone
Hey, Eric. At 4:12, why don't you extend the spokes for the weep channels all the way to the edge of the mold to save you having to cut the channels after the mold has cured? And, at 4:43, it looks like you built a second mold (all blue), with the first one in the background. What was wrong with the first one?
Nothing, I just have to make a lot of them sometimes so I need multiple molds
@@EricStrebel Got it. And the spokes? Why so short?
Best next to lasagna :)
Can you tell me, if I use plaster instead of silicone and fill the mold with resin, how would I go about cracking it open to expose the resin (without damaging the resin)? Also, when I put the clay in the plaster mold, will it likely stick to the surface of the plaster because it's a similar make up and consistency?
depends on the plaster and how long you let it dry and how thick it is, also how delicate the part is inside and what material you use to cast it and if it has release agent on it.
@@EricStrebel I'm using plaster of Paris with a strong epoxy resin. What could I use as a release agent?
Prudle Doo seal the plaster with shellac if you can then use a paste wax like Johnson’s paste wax also Check with the mfg of the epoxy and see what they recommend
Thanks!
I liked the video, but the weep channels kinda lost me. Do you expect the product to run out of those and that is how you know you have all of the resin in place? I have a product I want to cast, and I fit-to-be-tied on how to get this thing done.
Scott Detweiler yes, the resin will weep out of those channels for this kind of a mold when there is sufficient resin. I have several vids on silicone mold making watch the one with the cold shoe
Cool beans, let’s drink a cup. Makes it look simple.
Hi, I'm trying to make a hollow soft rubber bottle ,
Can anyone assist in what material to use for cast, mold, color
Any consideration would be appreciated
You can slip cast the resin or rotomold the part.
Couldn't you also achieve this using a slurry technique? Pour the resin into a hollow mold, then put it on a rotator to continuously coat the inside of the mold with resin, the shell will harden quicker than the liquid center, causing the liquid to coat the mold in a constant thickness. I think they call it "slip molding" for ceramic parts.
EFormance Engineering resins take a bit longer to set, and work different than the ceramic process, you would not be able to control the wall thickness with any sort of consistency.
Why did you replaced the original 3d printed model by clay , i just don't get it, could you please tell me why?
Hey sir, I'm trying to make a transparent plastic carburetor float bowl. May I ask what should I use? I need something that resist gas fuel.
The urethane should be able to withstand the gasoline’s I don’t know about the heat however, look for a resin that has the right properties to suit your application
@@EricStrebel thank you for answering my question . How about epoxy resin? Do you think it can withstand the heat?
Different formulations will have different properties check with the different resin manufacturers to find a material that is suitable for your application
Which manufacturer do you prefer using for your silicone and resin?
ryspot I like using the Innovative Polymers /Rampf products. I try to steer clear of the smooth on stuff unless absolutely necessary.
How come you don't like Smooth-on? And what's your assessment on Polytek products?
I've used both these, but to varying degrees of success. My biggest problem is of course are bubbles, but also surface frothing in the resin. It's incredibly frustrating to have millions of microbubbles covering an otherwise perfect surface. How are the materials you use with these issues?
@@My2Cents1 use a pressure tank. It's easy to change a 2.5 gallon Harbor Freight paint pressure tank for resin casting. All you have to take off is the dip tube and the top side fitting above it. Buy a second gauge and screw it into the lid there. That is the gauge you trust because it's directly measuring the pressure in the tank. Get a pipe plug for the spray gun air outlet on the regulator. Install the ball valve on the regulator inlet, and the air hose quick connect on the ball valve. Install the gauge supplied with the tank onto the regulator where it's supposed to go, if not already installed. Install the regulator onto the T fitting where it's intended to go. No need to move the pressure relief valve.
People keep doing this the hard way, and not as safe as it should be. I've yet to find a video on RUclips where a gauge is installed to directly read the tank pressure. There's at least one video where a guy took everything off the top of the lid, hacksawed off the dip tube instead of unscrewing it. He move the relief valve to the dip tube hole then put the ball valve directly onto the air inlet hole. No gauges! No regulator! I assume he relies on the compressor to regulate the pressure, yikes!
@@greggv8
Thanks bud! I actually ended up getting a pressure tank and it did save me a lot of trouble. It's not configured the way you recommend though. The gauge is on the pump - and sometimes I do have another problem now where the rubber molds get slightly deformed if the pressure is too high. I've actually been suspecting it's for the very reason you talk about here. There needs to be a gauge on the tank itself. Now I know what I have to do to fix it. You must be a mind reader or something. Thanks a lot!
IS it possible to vaccum casting polyresine with fiberglass
Dunno, never tried that
can it be transparent ? like totally clear ?
Yes
I am suprised to see that you use so much silicone
I'm actually trying to do something very similar to this, though the particular project I have going on feels a little more complicated, and I'd love to know better how to move forward with the stage I'm at right now without completely wrecking everything I had put effort into. Is there a way at all for me to contact you, via Email/social Network where I may be able to possibly get some guidance or feedback? If it's not too much trouble of course!
What type of clay is it? Clay isn't oil based is it? Usually you just ad water to clay to smooth it don't you?
Ben Scott-Pye Chavant NSP non sulphur plasticine, styling clay.
Cool. :) Is it a good choice for making original models with to take silicone moulds from?
Yes, you must use a non sulfur-based clay for silicone casting
Hi there.
I hope you can help, i have a HSC student wanting to make a hollowed out resin heart and lungs she is sculpting out of paper clay.
I wondered if you know: can she use 'art mount board with a glue gun to seal, instead of wood?
Then would she need to 'fire' the clay or could we just use the clay mould once air dried.
Then what would we coat if anything, the clay with, so it pops nicely out of the alginate.
We only need to make one, but if it isn't right or goes wrong, we would need to make another.
It would be about A3 size.
Thank you in advance.
Any other tips welcome.
Faye
You can make the sidewalls out of anything you want just seal it with a coat of shellac including what she's sculpting and you should be able to pull a mold with the alginate. Remember alginate shrinks you need to move fast as soon as you make that mold you need to cast something into it.
Can you print a molde for a vase using 3d printer
Yes, you can
I have searched how to do that
But I can't found the good idea to make the mold
How thin can you go like this? I want a part that I can shine a light through
Totally possible
@@EricStrebel If you want to go thin, any tips/tricks for releasing the clay while having it hold its form?
Yeah nice, but what is it?
Color model
When you say "poor", do you mean pour?
Why not rotational casting?
Well, I guess because I don’t have a rotational molding machine
But what if you need pretty thin and nice inside surface?
Art Craft Just make a thinner clay surface and you will need to take more time to finish the inside. Thanks for the comment, glad you liked the video. Feel free to share on social media
Hi I found answer > Slush casting. I try it in free time, want to use molten wax.
Interesting. Not exactly what I would called thin walled as most the wall thicknesses I cast are 1/16th" but still pretty informative none the less. Thanks for the vid on this.
2:40 - 1/4" is 6 mm; 10 mm is almost 1/2".
What in the hell was the part itself?
It's so terrible and not designed by me....a car
Ha, are you in the energy industry? Looks like turbine airfoils being used as weights.
Can I just pay you to make me the mold I need ? Lol I really would !
Music is annoyingly distracting with it's compressor duck pumping. You're pretty soft spoken anyway. Vox nearly buried in the trance mix.
Craig Lumpy Lemke your the only one to mention it....Curious what your set up is, what kind of speakers are you using, what type of device are you viewing the video?
I agree with the comment about the music being annoying. I don't know the term "compressor duck pumping".
I'm using a laptop computer with 2 earbuds.
From the start until 0:34 has a 2 hz beat, but there is nothing in the video to support that beat.
From 0:36 you changed the beat and move it and the music to only one channel,
I am able to remove one earbud to not hear the noise.
After the monologue is done, at 5:17 the music moves back to both channels, but the 'important stuff' has been said.
I did not mind the music. I'm on a mac with full surround speaker system and subwoofer. Didn't have a problem hearing what you said, and although you are very soft spoken, it comes out nice and clear.
Why did You add music on top of Your voice. It's so annoying!
Its a curse on almost all makers channels, annoying loud music 😢