[Build] Silicone Injection Moulding System

[@OMGWTFBBQSHEEP]

This is absolutly amazing. Thank you for sharing this!

[@CEWManufacturing]

Glad you like it!

[@benjaminmui7941]

this is absolutely brilliant. I'd assume the restriction is also probably coming from the hose expanding. Think about cars that use Stock rubber brake lines and switch to SS braid lines for better performance (also clutch lines as well)

[@nitrousman8882]

great video! one thing about bubbles. You could use the "other way" to eliminate them - pressure vessel. One use of a pressure paint tank is to eliminate bubbles in castings. Just pop it into the chamber, pump the vessel up to 30PSI and see the difference :) Thanks for sharing this. (just a thought but aren't you wasting a lot of energy with the friction of this larger and longer connector tubes? Rigid PE or similar (teflon best) tubes would give you a much better advantage.... might be worth a try. Doug)

[@CEWManufacturing]

Yep, wasting so much energy, still refining it...

[@justinbeigh75]

Nice system will be watching for updates!!

[@CEWManufacturing]

Cheers mate. When the parts get in I'll do the next part.

[@MedMed-iy1bm]

Hello, awesome work. Wat is the volume of syringe? and haw you fil silicone inside syringe?

[@moretimethanmoney8611]

"In 6 months"... On your time. I appreciate that and will subscribe because of it.

[@CEWManufacturing]

My new nozzles haven't arrived due to covid anyway. So partially my time, partially global slow downs...

[@nitrousman8882]

have you done any videos on making these moulds? They're really first rate!

[@CEWManufacturing]

Mate, that's a decent idea. I'll see what I can do

[@TheDeerInn]

Could you design and print a mixing head in clear that comes apart for cleaning and reuse with a tapered mix section. I need to design the pump system to use one plunger so I can mix colors, degas and then inject into the molds created. It is so cool to be able to make changes in designs and print out the parts to find out what works the best for a particular setup. Thanks for more inspiration.

[@CEWManufacturing]

You probably could do that. Have it as two halves which fit into a cone or something to hold them together... It might be worth looking into.

[@martinl4474]

Great video! Could you please elaborate on the LSR you are using and how it's cured? Can you share the manufacturer and quality etc? I'm doing some experimenting right now in this field but all the LSRs I've come across require around 150 degree celcius to cure making the actual mold one of the harder parts to make from 3d printing. If you cure the silicone at room temp that makes things a lot more easy

[@CEWManufacturing]

Hello! Thanks for the feedback. This silicone is a 2 part (equal part A/B) "addition cure" silicone. Essentially it chemically cures like an epoxy at room temperature. The company in this instance is called dalchem and I think this silicone was their P20 (the number being hardness value) but I can't see that on their website any more, P35 would be the closest. dalchem.com.au/dalchem-p35.html If you're in Aus that's your best bet. If your in the US then look for smooth-on products. Good luck

[@geneva760]

Neato - smart little setup indeed. Have a nice day all. CHEERS from AUSTRALIA.

[@CEWManufacturing]

Cheers mate! I'd say cheers from brissy, but it's so cold my teeth are chattering. I guess this is our week of winter.

[@LukePettit3dArtist]

@@CEWManufacturing Pffttt you minimum overnight was our maximum during the day lol Hi from Canberra

[@CEWManufacturing]

I lived in Canberra years ago. I live the place, but so so cold

[@phil2782]

what do you make the orings out of? Wouldn't silicone stick to

[@CEWManufacturing]

Just normal orings. The mixed silicone is never in contact with any of the orings, only one part. So it never hardens

[@Starexe97]

Hey! Do you reckon this can work to inject polyurethane resin into silicone mold? Thanks!

[@CEWManufacturing]

It would work. I did it using a smaller scale a few years back.

[@Starexe97]

@@CEWManufacturing thanks, glad to hear that!

[@Starexe97]

@@CEWManufacturing oh btw, your amazon link expired. what is it that we need to buy? the tubes and everything?

[@calebsorensen4969]

Looks like links other than the thingsverse one expired. Could you clue me in on what sizes and whatnot the non printed components are? Starting my own business with a cool, new product. I just have to make some prototypes. I'll ship you a prototype if you help me out!

[@CEWManufacturing]

chapmaneng.com/shop/composite-tools/ this is the link to the Infusion connector, it's the thing I'm making in the video with the injection mould. I've stopped selling them as I've moved overseas recently (twice) and I don't have the stability to keep producing them. If you have any questions on other parts of the build I'm happy to help out.

[@CEWManufacturing]

These are the syringes I used: a.aliexpress.com/_mOaeGyc And these are the mixing cartridges: a.aliexpress.com/_mLMiycG The rest is just some screws, a dewalt clamp and some vinyl hose

[@butchcassidy1717]

This is awesome. Would it work for a 100 to 10 mix silicone?

[@CEWManufacturing]

It would, but you would have to size the area of your syringes appropriately if you were maintaining the same stroke lengths, otherwise some kind of ratio of the strokes would be required

[@ratak4778]

Could you please share the 3D model of the mold? That would help us to use the same tolerances when printing a mold for this type of Injection system.

[@CEWManufacturing]

I'd prefer not to, I sell these parts. Sorry. However, I generally go for a 0.2mm clearance. Flat surfaces have an o ring groove in them with a custom o ring, or a cone shape that it mates against to locate the part and seal it.

[@phil2782]

​@@CEWManufacturing what do you make the orings out of? Wouldn't silicone stick to them?

[@CalebHaines]

awesome build! how do you clean the infusion connector after use?

[@CEWManufacturing]

Because it's silicone the epoxy doesn't stick to it and just falls off. You can give it a wash in some warm soapy water if that takes your fancy.

[@tinkertom3683]

Modify a manual drill press lever for the extra force

[@CEWManufacturing]

Not a bad idea!

[@1stPrinciples455]

Dear sir, very interesting effort. May i know why is the Parts A and B not required to be stir mixed? It seems that they merge at the output junction of the "mixer" but no stirring.

[@CEWManufacturing]

They mix through the tube. The tube is called a static mixing nozzle. It divides the mixture in half and re-combines it at multiple stages through the length of the tube. It works really well and doesn't introduce any air bubbles.

[@1stPrinciples455]

@@CEWManufacturing Wow, interesting ! Excellent explanation. Thank You!

[@choice1239]

What kind of silicon you are using for your product Please tell me the raw material so I can buy online

[@CEWManufacturing]

Sorry for the really late reply. I'm using dalchem silicone from Aus. However I have used smooth on before too. The trick with this method is to have a low viscosity silicon (which usually correlates to the final shore hardness, the fact I want soft parts is beneficial here)

[@Benshooman]

Nice mate, this is awesome. Can I ask what kind of printer you're using for the parts?

[@CEWManufacturing]

G'day mate, the printer is a monoprice ultimate. It's got a micro Swiss all metal hot end, as well as a bond tech extruder. I use a print bite build surface. It's pretty good, but the stock cooling sucks and is something I should fix

[@christiankahmann926]

Hey, from where do you purchase your silicone ? I'm having trouble finding a reputable source for injection moulding. Thanks.

[@CEWManufacturing]

If you're in Aus, I've been using dalchem. Otherwise I've had luck with smooth-on before.

[@PandaVazquez_]

Hello, could you share the code of the LSR you used, please?

[@CEWManufacturing]

Hello, I'm more than happy to help, what is an LSR? I'm not familiar with that acronym.

[@jackjmaev3877]

LSR is liquid silicone rubber

[@jackjmaev3877]

What is the material product information is the question .. thank you so much .. great video

[@ThisDesignedThat]

holy **** thats awesome!

[@CEWManufacturing]

Thanks!

[@StevenBrown-b3h]

Any chance I could buy one of those from you?

[@CEWManufacturing]

I'm happy to give you the files for free if you'd like.

[@qwas9963]

How to reduce voids or air bubbles ?

[@CEWManufacturing]

This set up mixes the silicone without any air entrapment, in this way (and using a proper feed in the mould, feeding down through the centre and then filling from the bottom) air bubbles will be avoided

[@qwas9963]

Thank you

[@RodrigoNascimentoMattos]

you need a rail to align the silicon pumps!

[@CEWManufacturing]

That would probably work. If I was going to that level I'd replace the syringes with acrylic tube or something and make it a bit bigger. I'll keep it in mind

[@ChinaMoiron]

not work on injection molding machine,right?

[@CEWManufacturing]

No it won't sorry.

[@ChinaMoiron]

@@CEWManufacturing i see. thanks

[@qivarebil2149]

CAMERA FOCUS, PLEASE!

[@4cventin]

cool!

[@GenuineNPC]

Two people don't know how to enjoy things

[@CEWManufacturing]

Haha, there are always some...