Open Face Mold: Flexible Rubber Feet

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I make and open face silicone mold to cast some rubber feet for my Subwoofer.
I cover how to make the open face mold and then use urethane resin to make squishy rubber feet in the mold.
Purchase Alfred Backpack hanger: botzen.com
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I use silicone Inc GI 1040 and BJB urethane resin
Silicone: silicones-inc.com
BJB resin: bjbenterprises.com
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Contact me through www.botzen.com for design work, send a project overview .PDF document for a quote
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Botzen Design Inc.
Industrial Design and Product Visualization
www.botzen.com

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Опубликовано:

22 мар 2022

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Комментарии : 57

@jasond4752 Год назад

Every time I watch silicone being degassed it amazes me. I would have never thought that much air gets trapped inside.

@realpdm 2 года назад

Really appreciate how you go through the entire process. I've seen other people do this sort of thing and not felt like it was something I could tackle. Something simple like this though I think I might could do. Thank you for sharing!

@mkegadgets4380 2 года назад

Of all your videos I have viewed this would be my favorite. You took a real world problem, and solved it using your skill and your tools. The same thing I love to do every day. It doesn’t have to be a big complicated problem or a big complicated solution, it just has to work at the end of the day.

@EricStrebel 2 года назад

Thanks

@bjbenterprises 2 года назад

Another great video showing the process Eric. Glad to see our ColorFlex CF-80AM is working out well for your molded parts. We love the range of colors you can achieve with that system and it even does well in applications with UV exposure. We have parts outside for almost a year and they are still working well.

@EricStrebel 2 года назад

Sweet, good to know!

@garagemonkeysan 2 года назад

Great video and project. Feet look better than factory. New T-shirt logo: "Just say no to air bubbles." or "Molders love a vacuum." Mahalo for sharing! : )

@EricStrebel 2 года назад

Awesome

@UnvarnishedTarnished 2 года назад

I use a small Bluetooth speaker that has a sub facing down and it was constantly rattling everything in my shop, I made a "disk" of silicone to put under the speaker and it helped in a very similar way. Great video as always Eric!

@EricStrebel 2 года назад

Yes, that probably works well. Thanks for sharing

@a84148 Год назад

Very nice

@SupportHomelandDivision 2 года назад

Great design! Thank you for showing that process, I had to do something similar for a project in our living room. But I think I can make it better with what your idea.

@EricStrebel 2 года назад

Thanks

@Freedom89984 2 месяца назад

Nice job, I put a rubber tile under my down firing sub.

@hagalazmultiverze3411 Год назад

Always interesting contents, bro. You got me started in doing more fancy designs. Keep up the good work

@cuffedhandscantcre8 Год назад

Just found your channel and its beyond helpful, would the flexible resin youre using work for something like the sole of a tennis shoe?

@EricStrebel Год назад

Yes

@davidvdbergen 2 месяца назад

you could have just walked to the hardware store and bought a couple of rubber feet. 🤣🤣🤣

@B3D 2 года назад

my lazy way process. 3d model drop resin or fdm printrr . use flex material . hours later post process done still interesting to learn molding

@MrSigmundism 3 месяца назад

After pouring resin and hardner in mold, does this mixed need to be heated to dry? I mean exactly that it wouldent dry by itself in home temperature and pressure? Thanks indeed

@EricStrebel 3 месяца назад

It's a chemical reaction heat only assists in the curing

@marvinocarizavlogs 2 месяца назад

Great video sir! It's sad cos I can't find a resin same with that urethane. Only epoxy, polyester and fiberglass resin. Any alternatives?

@EricStrebel 2 месяца назад

Try BJB enterprises here in the US

@marvinocarizavlogs 2 месяца назад

@@EricStrebel I'm from the Philippines, I wanted to do a rubbery finish project, but can't find the right resin. I'm thinking of I can just use the moder instead of resin.

@EricStrebel 2 месяца назад

Don't know, try and see how it works

@truck6859 5 месяцев назад

3 days ago I made a small casting using Alumilite Flex 80, with a 1:1 ratio based on weight. It never cured. It remained gooey for > 24 hours. Could it have been affected by the frigid temps of my workspace? After I exposed it to a space heater for several hours, it firmed up a little, but stil crumbled in my fingers when I tried to demold.

@EricStrebel 5 месяцев назад

Hard to say, try again and follow the manufacturers suggestions

@evren.builds 2 года назад

Nicee. What do you use to color the urethane?

@EricStrebel 2 года назад

Black pigment, so the part is opaque, as opposed to a dye that is translucent

@TheGnthreman Год назад

Does that urethane have to be pressure cured?

@EricStrebel Год назад

You will get better results if you do

@mtcru 2 года назад

Would be better to have speaker isolation stand / speaker isolation feets.

@goguyted 2 года назад

Sorry to sound so stupid but I am very new to casting, when you refer to "PVA glue" in all your videos you mean the Elmer's right? (What you put on the bottom of the plastic foot to stick to the cup)

@EricStrebel 2 года назад

Yes, white school glue, should be a link in the description to get some on Amazon

@goguyted 2 года назад

@@EricStrebel Thank you

@EricStrebel 2 года назад

Best of luck with your project

@brandontezeno_ 2 года назад

Do you take commissions for shrinking silicone molds or resin cast?

@EricStrebel 2 года назад

? Not sure what your asking...

@brandontezeno_ 2 года назад

@@EricStrebel ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-we0nOvtAMw4.html

@brandontezeno_ 2 года назад

@@EricStrebel something similar to that wanted a couple of 7.5 inches figurine shrinkin down to 6.5 inches

@EricStrebel 2 года назад

Ahhh, I see. It's possible to do, it is an inexact science for sure. Go to www.botzen.com and follow the directions to submit a project overview document for a quote. It would make an excellent video.

@padel24x7 2 года назад

I would have 3D printed it in TPU

@mirko.jankovic 2 года назад

You cant get smooth surfaces like molded piece. I have a 3d printer aswell.

@padel24x7 2 года назад

@@mirko.jankovic you can sandpaper it to make it smoother. why would you want a smooth surface in this case? you can't see it anyways

@graealex 2 года назад

You can't really compare proper solid urethane with 3D printed TPU.

@padel24x7 2 года назад

@@graealex whats lacking in TPU ?

@graealex 2 года назад

@@padel24x7 For example, the elasticity depends on temperature. You'd also need to print it with a fairly high infill, as it would otherwise collapse from the weight. And you can't really recreate the same dampening characteristics with 3D printing, unless you go for 100% infill, and even then it is probably going to be too stiff to do a good job decoupling the speaker from the floor.

@officialWWM 2 года назад

That’s a lot a faffing about to ruin a perfectly good subwoofer!

@baudgaud 2 года назад

I had a similar thought. Not sure what rubber feet will do that setting it on a rug will not do, except that setting it on a rug is undo-able for when your wife is out of the house and you want to remember what it was like to have a great subwoofer.

@officialWWM 2 года назад

@@baudgaud exactly. It would be easier to change the wife for a much more understanding model 😂

@baudgaud 2 года назад

@@officialWWM Perhaps your experience is much different than mine, but it is quite difficult to find a woman who I can put up with who can also put up with me. Everybody has their quirks. My point is mostly that, while it is very cool that the presenter shows how to make a mold from an existing part (complete with naming the products involved) and then using that to cast a new part the same size and shape (again with the full materials list), I do not believe swapping plastic for rubber feet would have ANY dampening effect on a subwoofer! I can believe that the hard-plastic feet rattle on the floor every time the bass hits, and that should wreck the quality of the woofer sound for an audiophile as much as for an annoyed SO... and we can see at the end that he does set the box on a hard tiled floor. If that were the case, why did the presenter blame his wife?! So I can not understand "the bass is too loud" being corrected by changing the feet. It seems as sensible as getting a haircut in response to a broken bone.