How to Prototype Over molded Flexible Urethane resin parts?

[@TickyTack23]

I've been getting into 3D scanning, clay modeling, and mold making. I have to say your videos have been very valuable to watch. Thank you for your work.

[@EricStrebel]

Fantastic! Feel free to let the world know and share on social media

[@efahrenholz]

Thank you for going into so much detail. I learned quite a bit and you got my sub. Keep pumping out this quality.

[@EricStrebel]

Thanks for your support much appreciated. I'll do my best

[@Vikramslm]

Amazing Work Mr.Eric. Bravo... Bravo..

[@EricStrebel]

Thanks

[@spamspasm8183]

This is definitely one of the most useful and helpful channels on KZbin. A gem in a mountain of coal. The delivery is in-depth yet very considerate of the audience and almost anyone of any skill level will be able to follow. Looking forward to more this 2020. Happy new year Eric!

[@EricStrebel]

Thank you, very kind words. Feel free to share on social media if the rest of the world Happy New year to you as well.

[@kjamison5951]

Before I got my current job in February, I was really into mould making and resin casting. I was just getting into flexible casting when I got an interview and I haven’t been able to get back to the moulds since. Fingers crossed the new year will afford me some time. Thank you for your videos.

[@EricStrebel]

Best of luck to you

[@bigdaddy7670]

Excellent video, thanks for sharing your knowledge with us!!

[@jenspetersen5865]

Fantastic video - one of the best I have seen - very useful and worth looking at again!

[@EricStrebel]

Glad it was helpful!

[@cymeriandesigns]

This was fascinating to watch. Thank you for taking the time and trouble to make a quality video showing the process.

[@johncude]

Nice work as always Eric!

[@EricStrebel]

Thank you John!

[@garagemonkeysan]

Wow that's next level craftsmanship! Great video. Thx for sharing. Cheers. : )

[@EricStrebel]

garagemonkeysan thanks for the comment! glad you liked it, I appreciate your support!

[@verdantpulse5185]

Very impressive, getting the urethane mixed, loaded and degassed in the syringe, loaded and degassed in the mold, closing, clamping, and pressurising in the 7-10 minute working time. While shooting video. I make production molds for medical manikins. Lots of hollow silicone rubber parts, some silicone overmolded on silicone. Basicly three dimensional puzzles.

[@MiniaturenGalerie]

i always thougth urethane rubbers, like silicone, inevitably have a much higher viscosity, making them really hard to cast with more intricate molds. this product seems to have the casting abilities of resin and rubber characteristics after curing. (this has been helpful!)

[@EricStrebel]

Great, just have to know the limitations and properties of what you are using and work with them.

[@moirani2021]

Excellent Sir💯💯💯

[@philipp594]

This is really cool, thanks.

[@dennisg.1082]

Eric, Thanks as always! For overmolded parts of two different materials (resin and silicon), how do get them to stick together so Ty don’t separate and develop air pocket in between them? Thanks

[@EricStrebel]

Not possible, both materials hard and soft need to be urethane

[@eolienelec8405]

très bonne vidéo, merci

[@franktaccetta784]

Great jobs! Very impressive!

[@EricStrebel]

Thank you! I Appreciate your comment and support.

[@littlestworkshop]

May I ask what sort of heater you added to your pressure pot?

[@EricStrebel]

Coffee pot warmer

[@cestmoi3913]

That was great and interesting video to watch. Thank you! Curiosity out, why we can not achieve the same result with a 3d printer?

[@peem1244]

Hi Eric, i found this video totally fascinating. Very methodical work. I think you've missed your calling in life...you should have been an industrial designer !!! Did i see masking tape on your scalpel blade near the end of the video? Stay safe Eric and keep up the good work.

[@EricStrebel]

Masking tape on the blade is so I don't cut the part accidentally some where.

Great video! I'm going to give it a try for my project. Do you think it would work to waterproof a hole to be able to push a switch button inside a electronic device?

[@EricStrebel]

Possibly, yes

[@ecsyntric]

eric how do vary the Shore level? just different ratios of same two liquids or different liquids entirely?

[@EricStrebel]

Good question That's something that each manufacturer figures out. You cannot mess with the ratio of the resin You have to order a specific resin with a specific hardness

[@chadherrick3433]

Eric, How long does is the pot life for the urethane that you are using? How long does it take your vacuum chamber to get past 29 (or near full vacuum)? I'm finding that if the pot life is under 10min that I don't have enough time to mix the urethane, degas it, inject/pour it into the mold, and the place it in the pressure chamber. What pot life and viscosity do you look for when purchasing a urethane? Obviously it depends on the part but this seems like a key factor to success. Also how closely do you regulate the temp in your pressure chamber? I find that some urethanes have incredibly small temp ranges listed on their technical data sheets for curing temperatures. Your videos are an incredible asset to the online community. Much appreciation!

[@EricStrebel]

The pot that varies with every type of material, the pulls close to 30

[@aymenbenahmed2230]

Fantastic!!

[@EricStrebel]

Thanks!

[@GraphiteSamurai]

Is it possible to reply to this with a link for the pressure pot with heat that you show at 14:09? Thank you so much, these videos are amazing!

[@EricStrebel]

Custom 10 gallon tank, I have a series on the build of that custom unit

[@GraphiteSamurai]

@@EricStrebel geez , you are the best!! Thank you

[@EricStrebel]

Wrong video I think I used my regular 2 gallon pressure tank for that those are readily available everybody just buys a paint pot and modifies them

[@CruzMonrreal]

Damn, nice job!

[@EricStrebel]

Thank you! I am pleased with how they turned out.

[@JoonaParhankangas]

whats pot time most of ur silicones?

[@EricStrebel]

Hmmm, maybe 60 min....

[@adamhajimichael]

It looks great! After figuring out how to make it, how much working hours go into making one part? I am wondering if a product like this could be produced economically beyond the proto phase.

[@EricStrebel]

10 minutes working time then 4 hours to cure in the heat

[@litmanenx]

I am trying to make a small part its weights is 3 grams with flexible resin but i always have bubbles inside of it. I dont have vacume or pressure pot. Can i cast nice part?

[@EricStrebel]

Yes, I can. Vacuum and pressure are essental to a successful cast. Reach out though my website for a quote, include as much project Info as possible.

[@litmanenx]

@@EricStrebel thank you i will check it.

[@chrisjohnson9914]

And I am always. always using sanding blocks

[@EricStrebel]

Always!

[@772777777777777]

Eric I have a question how do you cast an object that needs to be soft like the above casting you made of a short 70 and then become very rigid hard from the same material

[@EricStrebel]

Your question makes no sense I have no idea what you're asking me

[@772777777777777]

@@EricStrebel can you show how to mak resin.or silicone cast more flexiable in casting hard plast to softer ..example... squeegee blade... or plast weather striping hard plast to softer..

[@EricStrebel]

Well I don’t fully still understand your question but I think you want to cast a flexible object from a hard master, you just need to choose the correct durometer material when you cast for your application

[@772777777777777]

@@EricStrebel no eric im casting a object that a very hard shoreness that transcends into a soft shorness ....

[@EricStrebel]

Insert molding....make one part and then cast another resin around it.

[@hagalazmultiverze3411]

INSPIRING, sir!!!!

[@EricStrebel]

Thank you! Feel free to share on social media 😀

[@seriousCADninja]

Nice video ;)

[@EricStrebel]

Thanks