DIY Silicone Injection Molding

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This is a rig I put together in order to inject silicone into a complex mold within a 1hr window (short pot life). A LOT of pressure is need to push viscus fluids into a mold. This how-to video is part of a series where I make a pot full of magical looking mushrooms. This is just one of the behind the scenes looks at how these were made.
Here are all the videos in this series:
1: Intro • Nature Inspired Produc...
2: Casting clear resin mushrooms • Unreal Resin Castings
3: Casting Cement Pots • How to Make Flawless C...
4: Growing Moss • Music & Moss Propagation
5: Prototype vacuum formed packaging • Vacuum Formed Packagin...
6: DIY silicone injection machine (this video)
I hope to make more specials like this in the future, so be sure to back The 3D Handyman on Patreon! / the3dhandyman
Like the mushroom design? Find out more at (free wallpaper downloads at bottom of front page)
www.cruciblecompany.com/
3D PRINTS - Print at your own risk!
Syringe Holder: www.thingiverse.com/thing:502...
Hose-Clamp Collar: www.thingiverse.com/thing:502...
Drill Depth Stop: www.thingiverse.com/thing:455...
Public Service Announcement: In the process of coming up with this idea I found a lot of disturbing videos of people attempting to inject themselves with silicone. DON'T DO THAT with this machine or by any other method. You are already beautiful :)

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Опубликовано:

17 окт 2021

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Комментарии : 33

@11danzizzle11 2 года назад

The ol' can crusher coming in clutch, with some beefy upgrades. Despite reading the title and watching this I couldn't for the life of me figure out why your resin was so thick...Then I finally realized it's still early for me leaving me feeling like a big dumb dumb. Great video, its always super fun seeing people repurpose tools for making and the creative process!

@The3DHandyman 2 года назад

Very understandable. Let's just say little to none of this channel's content was developed in the morning :)

@Crits-Crafts Год назад

That ingenious

@justinmurphy2227 2 года назад

I kept noticing your "depth stop" attachment on your drill. Not knowing you had a Thingiverse life...lol....or that these were even 3D printed to begin with, I set out searching for one that looked like yours. Using Google images all I could find were pics of "collars" and there it was.....a pic of yours! I clicked it and boom. I actually laughed out loud when I realized you had printed it yourself....I'm guessing designed as. Thank you so much. You're an amazing asset to the DIY community and I will do all I can to help you be found.

@The3DHandyman 2 года назад

Haha! Great story! The depth stop was probably only mentioned in the desk build video that I designed it for but it has be used a hundred times since then. It's easily one of my most useful prints so far. Any help getting the channel noticed would be fantastic! Thanks for that.

@justinmurphy2227 2 года назад

And damn.....there it is in the description!!!!

@JohnJones-oy3md 2 года назад

I have to ask - where on earth did you find that huge syringe? I don't like shots, but I REALLY don't want a shot from that! LOL

@The3DHandyman 2 года назад

The internet of course! It's full of terrifying things, haha. I think these may have been marketed with some sort of agricultural use in mind.

@anime_reference 2 года назад

I'm not a huge fan of the "no voiceover" video style for projects like this, but you did make a neat thing

@The3DHandyman 2 года назад

Thanks! For this series I tried to keep the voiceovers to videos that needed detailed explanations. The next video up is "how to make prototype packaging". That needed a VO. Far too much info to communicate through text on the screen. Otherwise this channel is still pretty young and I'm trying to find out what people like most. I hope you enjoy the rest of this series VOs or not!

@ivaylodoshkov3128 Год назад

awesome video. How do you prevent the mushroom from moving inside the shell while pouring the silicone?

@The3DHandyman Год назад

Thanks! The mushroom is held in place by a snug fit (a peg in a round hole). There is one mold in particular the is a little loose. I use a small piece of tape to make the mushroom stem a little thicker to prevent it from rotating.

@chessewhiz527 11 месяцев назад

Inspired by this video I just injection molded some silicone with a syringe, but then I found your other video in which you use a vacuum to pull the casted material into the mold. I'm wondering which method you have found to be best, or if the best method is dependent on the material being cast.

@The3DHandyman 11 месяцев назад

For viscus materials, I would go with this method. The vacuum casting options is great for low viscosity materials only. There were specific moments in the rubber mold making process that I would put the mushroom master mold into the vacuum chamber but that was only to pull a few small bubbles out of the gills of the mushrooms, then I would force more rubber into the mold to push those bubbles out. Hopefully that makes sense. Point being that vacuum casting this stuff in the mold can sometimes ruin the rubber pour by making large bubbles and it can overly complicate when low working-time materials are used. In the end, it's all an experiment until you get the result you are looking for. How did the syringe casting work for you?

@chessewhiz527 11 месяцев назад

The syringe casting worked well. I hand injected as this was a single small mold for some proof of concept testing. I now have a can crusher on order to be able to do larger molds without killing my grip.

@The3DHandyman 11 месяцев назад

@@chessewhiz527 Nice. A locking strap worked really well for the can crusher as well. It will keep the pressure on without having to do anything.

@AsbestosCrisis 2 года назад

Awesome build! What do you think the advantage of having the injection molder is vs using the traditional approach of pouring into the mold then using the pressure pot? Was it to get the Silicone in faster on the small cavaties?

@The3DHandyman 2 года назад

Thanks! The outer mold was designed to replace the "fill up a tub with rubber" approach for casting. Rubber is expensive (this saves about $50 worth of silicone). A thin walled mold can also make for easier part extraction. I couldn't fill the outer mold from the top side because of how narrow the top is and how viscus the material is. It worked really well to pump it in from the bottom. The product also requires a set of more traditional parts that I use the standard method for. Mushrooms are just really complex parts to cast and this method solves a lot of issues I encountered with degasing.

@AsbestosCrisis 2 года назад

@@The3DHandyman Thanks for the thorough reply! Good point about having the thin walls to reduce cost, and ease of de-molding. The digital mold definitely helps get accurate results, and time saving on making containers the traditional way. Keep up the great work!

@The3DHandyman 2 года назад

@@AsbestosCrisis Any time! The design process for these was a lot of fun and I'm happy to share what I learned. There should also be more videos on this subject in the future. Most of my time is going in to fulfilling orders for these castings. Should be back to making videos some day soon!

@marcusmarcusk830 Год назад

Which silicone are you using here?

@Boblol126 10 месяцев назад

does excess silicone bond to the rubber stopper inside the syringe after use?

@The3DHandyman 10 месяцев назад

Yes, but with stretchy material it's easy to pull it out and cut it off. If the rubber stopper was a different non-bonding material, then it wouldn't. I just used a hunk of identical material for the stopper.

@The3DHandyman 2 года назад

There are 6 videos in this series! 1: Intro ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-QY81nlFKSh8.html 2: Casting clear resin mushrooms ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-LKt--K5jDQ0.html 3: Casting Cement Pots ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-qiH6Xj6Cn38.html 4: Growing Moss ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-iAn4akywFvM.html 5: Prototype vacuum formed packaging ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-T8bm8GvG3Tk.html 6: DIY silicone injection machine ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-S9TVsrH6Ebc.html I hope to make more specials like this in the future, so be sure to back The 3D Handyman on Patreon! www.patreon.com/the3dhandyman

@marcins5584 Год назад

what kind of silicone is it?

@The3DHandyman Год назад

Sorta clear 18 from Smooth-On. Shore 18A hardness. It works well but doesn't last very long. Maybe 10 castings before the rubber is to degraded to use. I'll do a video on this in a couple months.

@marcins5584 Год назад

@@The3DHandyman cool, I like your channel, it fits with the stuff I do to

@The3DHandyman Год назад

@@marcins5584 Awesome