#PTFE

2026-02-18

PSA: Star-shaped Bowden tubes are terrible for flexible filaments. Instead of reducing friction, they can increase it—because the filament gets pushed into the star “corners” under tension.
#fdm #3dprinting #3dprint #bowden #bowdentube #ptfe #teflon #capricorntube #creality #ender3 #filament #tpu #flexiblefilament #flexibles #softtpu #extrusion #underextrusion #clogging #stringing #printermods #3dprinter #3dprintingcommunity #additivemanufacturing

2026-02-04

📚 Teflon: Patent für den Kunststoff PTFE wurde am 4. Februar 1941 erteilt.

• 🧪 Entdeckung durch Roy Plunkett.
• 🍳 Hitzebeständig, antihaftbeschichtet.
• 🔬 Grundlage für vielfältige Anwendungen.

deutschlandfunk.de/04-02-1941-

#Teflon #PTFE #RoyPlunkett #Kunststoff #Chemie #Erfindung #Geschichte

Nicolas BaillardNicolasBaillard
2026-01-23

moins de > merci
stop > merci
moins de > merci
stop > merci
moins de > merci
moins de > merci
moins de > merci
stop > merci l'
etc. etc.

STOP

2025-10-20

Oh, look! I updated a thing! Now a *set* of couplers to connect PTFE tubing for printers, dryboxes, etc.

printables.com/model/1160569-p

#3DPrinting #pc4m10 #pc4m6 #ptfe #bowden

rexirexi
2025-09-29

phys.org/news/2025-09-stretcha

(marvy. yet another potential source for contamination in a new 'stretchable fabric'?)

"…researchers in 2D semiconductors tend not to engage with chemistry, UCLA's energy and 2D optoelectronics subgroup constantly exchange ideas about materials processing.

That overlap sparked the idea of combining two "common" materials from different worlds—#Nafion and MoS2—and the unexpected synergy made the breakthrough possible."

2025-09-24

wie, zum teufel, entsorgt man #ptfe - haltige schmierfettreste?

2025-09-23

@JostMaurin@dju.social

Nein, die Erde ist kein gemeinsames Boot und in
#Arktis und #Antarktis lassen sich kein #Mikroplastik, #PTFE etc. nachweisen.

🤷🤦🤡🤮

La Griffela_voix
2025-07-10

et visés par une plainte d’ pour «pratiques commerciales trompeuses» sur leurs poêles en «sûres»

Des associations environnementales accusent le groupe SEB et sa filiale Tefal de publicité mensongère. Elles dénoncent l’omission des risques liés au dans les poêles antiadhésives. leparisien.fr/economie/consomm

Polluants éternels :
mastodon.social/@la_voix/11480

2025-07-02

Stop using #teflon products.
You #cyclists: avoid all #PTFE lubricants. Get Green Oil instead.
It's the most abundant micro plastic now in your #gonads.

green-oil.net/index.html

Detectan varios tipos de microplásticos en el semen y en los ovarios: el más abundante es el teflón
eldiario.es/sociedad/detectan-

2025-06-24

'A Mini-Review on the Safety of PTFE as a Cosmetic Ingredient' - an #OpenAccess article in the Journal of the Netherlands Society of #Toxicology on #ScienceOpen:

🔗 scienceopen.com/hosted-documen

#PFAS #PTFE #CosmeticSafety

2025-03-29

Spectralon is considered one of the whitest and most reflective materials known - reflecting over 99% of light. However, it’s not a pigment in the traditional sense - it's a highly diffuse reflective material made from polytetrafluoroethylene (PTFE, the same polymer as Teflon).

#science #sciencefacts #spectralon #polytetrafluoroethylene #PTFE #reflectivematerial #whitestwhite

Richard "RichiH" HartmannRichiH@chaos.social
2025-02-04

A question for the #3dprinting and #maker crowd:

#PTFE tubes are _expensive_! Where do you source cheap & good quality ones? To be clear, for 1.75mm filament.

Any reliable #Aliexpress or anything?

2025-01-23

#PFAS verseucht #Boden und #Trinkwasser
#PFAS sammelt sich in #deinem #Körper
#PFAS macht dich #krank

@fedibikes_de @mastobikes_de #Fahrrad
Bist du auch ein:e #PFAS Giftspritzer:in?

#Fahrrad #Kettenöl mit #Teflon oder #PTFE wird zum Beispiel bei ALDI/LIDL regelmäßig großflächig verkauft und landet dann auf dem #Radweg und in der #Umwelt.

Edit: Das F100 ist nur ein Beispiel. Vermutlich haben die ALDI/LIDL Teflon Öle eine viel größere Verbreitung, aber ich hab kein Foto davon gefunden.

Foto einer Flasche F100 Kettenöl. Darauf steht nichts von PFAS oder Teflon, sondern: "Langes Leben für den Kettensatz. extra lange Schmierung."Screenshot der  F100 Kettenöl Produktbeschreibung. Oben drei supergute Ergebnisse von Produktbewertungen.
Darunter die Produktbeschreibung: "Garantiert durch PTFE-Zusatz extreme Leichtgängigkeit aller beweglichen Teile.

Was da nicht steht: PTFE ist Teflon und damit die Ewigkeitschemikalie PFAS.
Gentleman & Gangstergentlemangangster
2025-01-15

You've probably heard of but have you heard of ?

Abstract

Since satiety is largely due to stretch of the stomach and people tend to eat a consistent weight of food, increasing food volume and mass increases satiety. This can be achieved without increasing the calories of food by mixing food with a material that cannot be metabolized. Such a material should be inert, safe, resistant to stomach acid, lack taste, available in powder form, smooth, resistant to heat, and cost effective. Polytetrafluoroethylene (PTFE) is an ideal substance for this purpose. It is a soft plastic that is widely considered to be the most inert material known and is extremely stable. Animal feeding trials showed that rats fed a diet of 25% PTFE for 90 days had no signs of toxicity and that the rats lost weight. This article publishes the data from these subchronic animal feeding trials, reviews the relevant available literature, and hypothesizes that increasing the volume of food by mixing the food with PTFE powder at a ratio of 3 parts food to 1 part PTFE by volume will substantially improve satiety and reduce caloric consumption in people. Keywords: bulking agent, calorie free, obesity, polytetrafluoroethylene, PTFE, satiety
2025-01-14

Anybody else grossed out by #GreenOil and their disgusting #PR gaffe where they try and associate #MucOff (which I'm not a fan of, but still..), #PTFE and #ChrisHoy 's #cancer?

Absolute pieces of ****
#BikeTooter

road.cc/content/news/cycling-b

guy,in,a,hatwerefreeatlast
2024-11-19

This was a mixed success 😁. . Basically you can create tissue on the support and then just wait until the tissue is bone dry. However it doesn't seem to dry very well if you make the gelatin swell and you stick it to a sized paper... since the sizing prevents evaporation, all the evaporation has to pass thru the PTFE. It seems necessary to use the fan for active evaporation.

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