3D Printing Today #611

[3D Printing Tips and Tricks]

News: 

Bambu releases the X2D

Creality Filament Recycler

https://www.indiegogo.com/zh/projects/creality/creality-filament-maker-m1--shredder-r1?refcode=uRGQ6VWnOkq9Yb_Nmhc_uQ#/section/your-creation-journey-fully-supported-8280303

Segments: 

Facet Knife Tool, Five Things You Should Not Print, Seams

Thing of the Week: 

Hat Hanger

https://makerworld.com/en/models/1267055-hat-hanger#profileId-1292988

threedprintingtoday.libsyn.com or 

Search for 3D Printing Today wherever you get your podcasts

[Lee Foulkes]

I enjoyed the episode today listened to it on the way home from work. The discussion around the food grade printing was interesting. My mind went straight to microplastics. In fact im quite paranoid about it in general. With stinging and the general layers / threads of a 3d print. I would bet there is some debris that transfers over to the food. Perhaps more so than say an injection moulded PET water bottle. I suppose a little bit of PLA in stomach would break down and pass through. But regular use in say a cup for daily coffee, little bits breaking off and accumulating in the body - probably best avoided.

[3D Printing Tips and Tricks]

Per much of the literature I’ve reviewed the past couple of years the material found inside of living creatures the most is primarily polypropylene.

The primary sources of polymer material, I’ve read, are tires and clothing.

[vr...@optonline.net]

Interesting. Although - most plastics in clothing tends to be Nylon or Polyester - from what I have seen. But, I guess Polyester is really Polypropylene based. 

 

And - yes - clothing with plastics gets Absorbed by the skin. And, in fact - the Skin of your Body is essentially the Largest organ of a humanoid. And - Most humanoids don't realize this is the case. 

Also - since we are back on this topic of microplastics in the human body - I REALLY NEED to make a new posting - which is Directly related (and NOT HiJack this Thread)...

-K

 

------ Original Message ------
From: 3d-printing-...@googlegroups.com
To: 3d-printing-...@googlegroups.com
Sent: Friday, May 1st 2026, 04:56 PM
Subject: Re: 3D Printing Today #611

Per much of the literature I’ve reviewed the past couple of years the material found inside of living creatures the most is primarily polypropylene.

The primary sources of polymer material, I’ve read, are tires and clothing.

On Thursday, April 30, 2026 at 12:30:55 PM UTC-7 faw...@gmail.com wrote:
 

 

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[3D Printing Tips and Tricks]

You’re making an assumption about the clothing. The stuff I’ve read say that the stuff doesn’t get in you from skin contact. Rather from the lint in washing. It goes into the air and gets breathed in. When you clean that dryer filter, do it by a bright light and you can see the larger particles go into the air.

[Lee Foulkes]

I managed a project with University of South Wales, back in 2015/16. The challenge was recycling mattress textiles. PU Foams. Polyesters fibres and others. They made a liquid cocktail from a chemical breakdown of the material. They fed that to a special type of bacteria - which they starved so they would eat anything. I don't claim to understand the science, but the microbes absorbed the polymers in their cell structure and are harvested after a few weeks. 

The University used this mass to produce a bio plastic. We stopped at proof of concept as we couldn't fund further research, but they claimed it could be safely used as fish food......

I know other institutions are doing similar. I think it's a really important progression and would love to see a 3d filament that is full biodegradable in say the sea, the human or animal body or in the soil. I suppose it's a challenge between part durability and the rate of decomposition.

Imagine it though.. Your at the park feeding the ducks and fish ground up 3D printed fails.

Eat that Gretta!

[Kurt A 3d]

Kurt-1

Both PCTG and COPE are "copolyester" materials. Notice how a lot of cloth is "polyester" so.....

Kurt-A

PCTG

"PCTG (PolyCyclohexylene Dimethylene Terephthalate Glycol-modified) is an advanced copolyester in the same material family as PETG. While PETG has long been a go-to filament for strong, functional prints, PCTG offers improved strength, higher impact resistance, and greater heat resistance, making it an excellent choice for professional and industrial applications."

Also The Polymaker COPE  https://shop.polymaker.com/products/panchroma-cope?variant=43631571370041 is another strange fillament.

"Panchroma™ CoPE is a copolyester-based filament engineered for effortless printing and an exceptionally smooth, high-quality surface finish. Its advanced formulation significantly improves bridging and overhang capabilities, enabling reliable, high-speed printing up to 400 mm/s."

"Panchroma™ CoPE does not bond well with standard PLA, making it unsuitable for multi-material prints combining PLA-based Panchroma effects. However, this low adhesion is an advantage when using CoPE as a breakaway support material for PLA, allowing for clean and easy support removal."

Both of these are