John Meyer

Expertise in powder metallurgy, additive manufacturing and specialty alloys. Sharing my thoughts on materials science, engineering, technology, and more!

[John Meyer @MaterialsJohn]

@Mk4Colin @HowThingsWork_ This is compaction or pressing. The part is then taken to a furnace for sintering. The process combination is generally known as “press and sinter”.

Watch cases are often made through metal injection molding (MIM) which uses dies and powder/binder is squeezed in like playdough.

[John Meyer @MaterialsJohn]

@Potemkinman @HowThingsWork_ This is compaction or pressing. The part is then taken to a furnace for sintering. The process combination is generally known as “press and sinter”.

[John Meyer @MaterialsJohn]

@alaskanmike2 @HowThingsWork_ This is compaction or pressing. The part is then taken to a furnace for sintering. The process combination is generally known as “press and sinter”.

[John Meyer @MaterialsJohn]

@draaakkon @HowThingsWork_ Particles are only loosely bonded and interlocked and the part is quite porous after this step. Heating in a furnace after pressing is required to sinter (densify) the part and give it strength.

[John Meyer @MaterialsJohn]

Thomson son-father x wave-particle duality @NobelPrize is the fun fact I didn’t know I needed today!

[Fermat's Library @fermatslibrary]

FUN FACT

J.J. Thomson won the Nobel in Physics in 1906 when he showed electrons were particles. 🔴

His son G. P. Thomson won the Nobel Prize in Physics in 1937 for showing that electrons are waves. 🌊

[John Meyer @MaterialsJohn]

R.I.P. Allan McDonald. Your example of the need for ethics in engineering and science is now a cautionary tale taught in engineering curriculum. Let us all strive to always do the right thing, especially when it isn’t the easy thing. https://t.co/bujTmvd1Kk

[John Meyer @MaterialsJohn]

I consider this a blessing in disguise in that I will now explore opportunities, that are likely a better fit for my knowledge and experience, that I hadn’t considered in the past. I’m excited for what the future holds for my career. 7/7

[John Meyer @MaterialsJohn]

Some personal news.

Last Thursday (June 4th) I was informed that my position was one of the roughly 1,000 eliminated in a company-wide workforce reduction. I'm proud of the impact I made and the relationships I formed with my colleagues and customers. 1/7

[John Meyer @MaterialsJohn]

… and not a referendum of my professional self. This is further reinforced by the scores of messages I’ve received from colleagues and industry over the weekend, shocked by this news. Thank you to all that have already reached out, I deeply appreciate your support. 6/7

[John Meyer @MaterialsJohn]

Excited for US to launch to crewed flights! Godspeed to Dragon Demo-2 astronauts @Astro_Doug and @AstroBehnken on this historical day! 🚀 @SpaceX @NASA #LaunchAmerica

[John Meyer @MaterialsJohn]

Looking forward to our panel discussion on @SAEIntl Binder Jet standardization at 9:30pm eastern tonight. Strong start to the event. Thanks to @LINK3Dinc for their hard work organizing this #DAMM #damm2020 conference @CarpenterTechAM @CarpenterTech

[John Meyer @MaterialsJohn]

@ENERGY @argonne Who is going to be brave enough to eat the plutonium, radium, arsenic, mercury, etc. cupcakes?! 👀🥽⚗️🧁☠️😵

[John Meyer @MaterialsJohn]

@SusannaLHarris Evergreen tweet https://t.co/IiCOTCCMcs

[John Meyer @MaterialsJohn]

Here’s an example of how metallurgy and fracture mechanics are important to every day life.

The strength mechanical and civil engineers use in their designs is based on the resilience of the materials they depend upon. https://t.co/Kv6IqRstet

[John Meyer @MaterialsJohn]

Cool visual of gas flow across L-PBF. The ejected powder particle silhouettes and evaporated metal and gas density variations are depicted in Schlieren (light scattering / index of refraction differences caused by gas density variations.) https://t.co/uonfFJZbnd

[John Meyer @MaterialsJohn]

Looking forward to presenting today at PowderMet / AMPM 2019.

Industrial Gas Atomization for Additive Manufacturing and Beyond

in the Special Interest Program: Powder Production for Am, PM, and MIM: Process Characterization, Parameters and Design

@theMPIF