3D printer and health ... A marvelous technological breakthrough, but beware of the risks!

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Re: 3D printer and health ... A marvelous technological advance, but beware of the risks!




by Petrus » 19/10/20, 01:10

Christophe wrote:Okay, but what does this have to do with transparency? So we can't have resistance and transparency? : Cheesy:

I just ordered 4 spools from 4 different brands again for testing.

Which brands would you recommend for which type of yarn? You seem to have more experience than me ...

By extruding hotter, I think that some more volatile compounds vaporize in micro-bubbles making the printed part opaque, I had noticed this during my tests, it is necessary to make tests to see if the transparency window enters the window temperature level resistance.

For the filament I don't have a favorite brand, I buy from ebay when I need it (I don't print that much).
I am very interested in your feedback on the different brands of filaments, I have black PLA which breaks at the end of the spool, white which blocks the extruder and transparent blue which disintegrates over time ...
By the way, are you using 1.75mm or 3mm?
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Re: 3D printer and health ... A marvelous technological advance, but beware of the risks!




by Flytox » 19/10/20, 19:02

Christophe wrote:Are you talking about epoxy or polyester resin?


Acrylic (Varikleer), not sure if it is transposable for your uses : Mrgreen:
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Re: 3D printer and health ... A marvelous technological advance, but beware of the risks!




by Christophe » 19/10/20, 23:31

Petrus wrote:I am very interested in your feedback on the different brands of filaments


Mine turbine is not bad at the moment ... I am finishing my 1st carbon loaded PLA coil, I ordered 2 other brands.

For the moment the only thread of shit is the amazon basics PETG which I have never been able to print well ... I will test other PETGs ...

I would do a dedicated topic.

But one brand of spool is not the other (and there are even variations on the same manufacturer depending on the build batch) and one printer is not the other. You have to know both to get good results ...

Petrus wrote:, I have black PLA which breaks at the end of the coil, white which blocks the extruder and transparent blue which disintegrates over time ...


Can the moisture take? Me it is the PLA wood which is unusable ...

It is this mark:



I had no clogging except with carbon (I print in 0.6 mm and there it goes well).

Petrus wrote:By the way, are you using 1.75mm or 3mm?


1.75mm has become the standard, I think 3mm no longer exists for "small printers" ... here is mine: 3d-printers / tronxy-x5sa-500-pro-improvement-z-axis-how-to-paste-a-toothed-belt-t16537.html

I must already have more than 400 hours of print in 3 months (more than 3 kg printed) ... too bad there is no hour meter! (can be hidden in the firmware?)
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Re: 3D printer and health ... A marvelous technological advance, but beware of the risks!




by Christophe » 19/10/20, 23:44

I have been using a washing machine and post UV treating the resin models since last Saturday ...

And this evening, the solvent in front of more and more whitish, I noticed this at the bottom and in deposit like flakes on the parts ... : Shock: : Shock: : Shock:

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The solvent is Isopropyl Alcohol (IPA) ... and I have only printed translucent green resin in recent days ...

I thought it was the turbine that melted but no, it's still ok.

An idea of ​​what this whitish and thick deposit can be (Marco no comment ... : Mrgreen: ) ???

There were many more, the big part left during the emptying : Shock: : Shock: : Shock:
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Re: 3D printer and health ... A marvelous technological advance, but beware of the risks!




by Christophe » 20/10/20, 12:00

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Re: 3D printer and health ... A marvelous technological advance, but beware of the risks!




by Macro » 20/10/20, 12:27

we had during a plastic distillation operation a similar reaction with PET ...
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Re: 3D printer and health ... A marvelous technological advance, but beware of the risks!




by Christophe » 20/10/20, 12:34

That is to say ???

I don't know at all the real nature of the polymers of a 405 nm resin actually ...

I will inquire.

But the parts to be washed do not seem to be attacked ... it is print in 1 mm thickness with protruding ends if there was an attack on the parts I would have seen it immediately ...
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Re: 3D printer and health ... A marvelous technological advance, but beware of the risks!




by Christophe » 20/10/20, 12:39

Christophe wrote:I will inquire


Well, I didn't understand anything!

https://en.wikipedia.org/wiki/Photopolymer

: Cheesy:

Ah I understand a little better here: https://fr.wikipedia.org/wiki/R%C3%A9sine_photosensible
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Re: 3D printer and health ... A marvelous technological advance, but beware of the risks!




by Adrien (ex-nico239) » 20/10/20, 12:42

My problems:

1. the cold
I had to bring it in and suddenly the production drops

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2. Winding ... it had already done me

The filament overlaps in the spool suddenly it blocks the unwinding.

As I am not always in front of well sometimes it farts sometimes it makes a m .....





Otherwise I solved my scrolling worries by printing this part, a side support

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lateral_support_bobine_pla_2.jpg
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lateral_support_bobine_pla_1.jpg
support_latéral_bobine_pla_1.jpg (69.12 KiB) Viewed 2028 times
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Re: 3D printer and health ... A marvelous technological advance, but beware of the risks!




by Christophe » 20/10/20, 12:45

Adrien (ex-nico239) wrote:2. Winding ... it had already done me

The filament overlaps in the spool suddenly it blocks the unwinding.


For the moment I have not noticed a winding problem (I have read a lot of comments on this subject on the other hand) but I am only at 3 kg of print ... What brand is your badly wound spool?

You can talk about it here instead: 3d-printers / test-best-filaments-3d-printers-2020-pla-pla-tpu-petg-carbon-t16592.html
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