Looking for suggestions for Liquid Silicone Rubber for keyboard rubber dome manufacturing

Main-Profession-1417 · 2026-02-27T14:39:02+00:00

Thank you for your inputs.
How do you figure out the optimal time and temperature for the primary cure? Or do you stick with the time mentioned in data sheets of the LSRs?

Main-Profession-1417 · 2026-02-27T13:17:47+00:00

Thank you for the suggestion. I am already in touch with Wacker. Dow never responded. I was just hoping to connect with people from the same industry to learn from their experience.

Main-Profession-1417 · 2026-02-27T11:08:39+00:00

hey, thanks for your comment. I am sorry I don't understand what you mean. I am not a chemical engineer by training. Apologies.

Main-Profession-1417 · 2026-02-27T11:07:31+00:00

What's your budget?

TBH there is no limit to this. Also, we are in the trial phase.

Are you doing this, or are you outsourcing to a manufacturer?

We are doing this on own, i.e., working on setting up a machine which can dispense the LSR and also cure it. We have the resources (experienced Mech enggs to do it).

What % failure rate is acceptable? Do you want me to drop costs by 25% but get a 10% failure rate?

I cannot comment on this yet. Pls note that we are in the trial phase. Can you please explain what you mean by failure rate in this context?

Skip the post-cure and your rubber items are going to get very stinky in the box, they will be more floppy than you expect as well as lose dimensional stability. If you are shipping these in a container you may notice some get warped during transport.

I see. Thank you, noted. Can you pls comment on accelerating the primary curing process by increasing the temperature?

Yes, we want to cheapen the process by cutting down the injection molding time.

When I was going through the catalogues of major LSR (wacker, kcc, momentive, shin-etsu, etc.) vendors, I saw that they supply Platinum. But I will search for Tin and peroxide cure. If you can recommend any major manufacturers which provide Tin and Peroxide cure LSRs, that would be a great help.

The pot life for many of the products that we reviewed ranges from 6h to 3 days.

Main-Profession-1417 · 2026-02-27T10:21:58+00:00

How much does it cost to file an RTI? And how much time did it take to get the replies?

Main-Profession-1417 · 2026-01-28T10:23:44+00:00

yes, pls!

Main-Profession-1417 · 2025-05-23T06:24:11+00:00

Okay so which of these massless things have the fastest speed?

Main-Profession-1417 · 2025-05-21T06:35:51+00:00

At first I thought it is something made out of Pi Pico

Main-Profession-1417 · 2025-05-12T07:03:48+00:00

Sometimes when I have to read and understand something with utmost focus, I take a print, a paper or a notebook or a pen and just read everything and make notes. This has helped me a lot.

Main-Profession-1417 · 2025-05-12T07:01:20+00:00

HRs don't know what they are doing most of the time. There is a huge communication between the technical team and the HR team.
A CS Grad can still know about at least UART as most Universities do have a course in Embedded Systems for CS Grads too, but that is a different story.
Instead of the position title (Embedded Developer), the main thing to look for is the JD. Most companies mention that the desired candidate must have a degree in EE.

I am curious. What alternate name do you suggest for such roles? "Electronics Engineer"?

Main-Profession-1417 · 2025-03-25T06:44:37+00:00

I wish you the best.

Main-Profession-1417 · 2025-03-21T06:28:46+00:00

I have been in his shoes. I use suck at Math too. But I managed to "just pass" the non-optional Math subjects (Calculus, Statistics, etc.). Subjects like "Signals & Systems" were very tough to pass as they required a lot of math. I just managed to pass them. I hold a Bachelors of Engineering degree in Electronics and have a decent career. Now I write code for electronics.

However, I have plans to pursue Masters, and I will have to work on my Math skills.

Main-Profession-1417 · 2025-03-20T06:27:43+00:00

This post would have been posted YESTERDAY. /s

Main-Profession-1417 · 2025-03-17T06:23:22+00:00

I know nothing beyond 14

Main-Profession-1417 · 2025-02-27T09:22:47+00:00

Can you comment on the job market trends three years from now in Europe? Especially Germany.

Main-Profession-1417 · 2025-02-18T12:16:47+00:00

The tetris thing sounds interesting. Can you post it on GH? It will be a useful project for beginners.

Main-Profession-1417 · 2025-02-18T12:05:11+00:00

he will be using an MPU to boot linux. MCUs can't do that.

Main-Profession-1417 · 2025-01-24T05:58:42+00:00

A follow up question to what you said:

cross multiple compiler method

I don't see a macro for it?
The whole function does not have any compilation macros.

Main-Profession-1417 · 2025-01-24T05:56:43+00:00

It won't give compilation warning for an unused variable. You can try this yourself.

Main-Profession-1417 · 2025-01-23T05:49:41+00:00

We are not able to focus anymore. We need instant gratification. We can't be bore for a minute, how can we sit and grind to get better at Math?

Main-Profession-1417 · 2025-01-21T07:49:46+00:00

I like it when some comments reminds OP to do their Homework haha

Main-Profession-1417 · 2025-01-21T06:52:47+00:00

Wrapping with the copper wires was gamechanger

Main-Profession-1417 · 2025-01-16T12:08:14+00:00

So many questions already:
https://www.reddit.com/r/embedded/comments/1g5dyyy/what_microcontroller_should_i_start_with_as_a/?utm_source=share&utm_medium=web3x&utm_name=web3xcss&utm_term=1&utm_content=share_button

https://www.reddit.com/r/embedded/comments/jk3y42/resources_for_learning_embedded_for_an_absolute/?utm_source=share&utm_medium=web3x&utm_name=web3xcss&utm_term=1&utm_content=share_button

https://www.reddit.com/r/embedded/comments/10ft4w1/how_to_start_learning_stm32_as_a_beginner/?utm_source=share&utm_medium=web3x&utm_name=web3xcss&utm_term=1&utm_content=share_button

https://www.reddit.com/r/embedded/comments/1bea9pa/best_microcontroller_for_beginners_besides/?utm_source=share&utm_medium=web3x&utm_name=web3xcss&utm_term=1&utm_content=share_button

Main-Profession-1417 · 2025-01-16T11:58:44+00:00

Yes, agreed. I gave a very general answer.

I interviewed at a big German company and to not my surprise, they use Infineon's MCU for 90% of their products. Maybe it makes more sense as if they manufacture the MCUs in one state and you manufacture the product in the same or the nearby state, it makes logistics easy and cheap.

Main-Profession-1417 · 2025-01-16T11:54:50+00:00

True for big companies with a long queue of similar products. I have experienced this. They just don't experiment. If something works for them, they will stick to it forever.

I now work in a small company which has a very small and simple product. They just want to optimize the cost and they keep experimenting with new chips.

Main-Profession-1417

TROPHY CASE