Questions tagged [safety]

For questions about precautions with regard to immediate safety and security, when operating a machine, or handling printing materials.

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519 views

3D Printing with malicious intent

I have a bit of an odd request. I am studying the vulnerability of 3D printers and would like to know if there is a way to disable the limit switches on, for example, an Ender 3 in the G-code. Ideally,...
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0answers
34 views

Are 3D printed containers safe for cosmetics?

So I've seen info about food-safe 3D printed containers, but I haven't seen anything about safety when it comes to containers used for cosmetics. Would a cured resin 3D printed jar be safe for holding ...
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1answer
67 views

What protection does a face mask offer when using a resin printer?

Printer manufacturers such as Elegoo ship their printers with masks and advice users to wear them when handling resin or unwashed prints. In what way does the mask protect you? For example, do the ...
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1answer
43 views

Considerations for spray booth filtration

I am getting to the point where I want to start post-processing my 3D prints more heavily, i.e. sanding, polishing, painting. I am currently using PLA but will be working with resin and possibly other ...
3
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2answers
153 views

Ender 3 hot end heater "stuck on"

Forgive this long-winded post, but I thought it would be helpful to include the back story leading up to a very scary situation on my Ender 3. I was printing a job and everything started out fine just ...
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43 views

Filament suitable for medical masks

I'm trying to work out what filament is absolutely safe for prolonged contact with someones face. The contact may be for hours at a time and it's in terms of a facemask so they'll be breathing through ...
3
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1answer
116 views

Should I cure my 3D printed resin model before or after sanding down imperfections?

When printing a 3D model on a resin printer should I sand down imperfections and marks left by supports before or after curing? What are the benefits and drawbacks of doing it either way?
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2answers
258 views

Running SLA printer in the bedroom

How safe do you think it is to run an SLA 3D printer in the bedroom? I am planning to run Mi Air Purifier 3H/C while the printer is running, I am also thinking about adding this inside the actual ...
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2answers
112 views

What is the best way to collect sanding dust?

I am pretty sure that sanding makes a lot of microplastics, so it would be nice to collect the dust, and melt it to got a blob of plastic again instead of millions of tiny particles. What is the best ...
2
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1answer
43 views

How should I finish a food safe print?

I'd like to print a mouse shell from food safe PLA. I need it to be food safe, because sweat can dissolve any harmful chemical from it just like foods. I am not sure about how to finish it after ...
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5answers
236 views

What are some good safety tips for a 3D printing beginner?

I have just bought my own 3D printer. However, I am now reading that there may be some safety risks to 3D printing. I will be taking some precautions, such as buying an enclosed 3D printer (the ...
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1answer
186 views

How do I add an emergency stop button over Micro USB?

I have an Ender 3. I want to add an emergency stop button. Ideally it’ll plug in to the printer’s micro USB port and run the M112. I use default firmware and don’t ...
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2answers
202 views

How to replace the nozzle in my hotend assembly?

What should I take care of to replace the nozzle of the hotend assembly the right way? What kind of data, precautions, tools, steps, and verification are important for replacing the nozzle? The ...
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1answer
316 views

Order of a HEPA filter and Carbon filter in a filter-stack

I am going to make a filter for the enclosure of a 3D printer and want to remove both VOC's (with activated carbon) and Ultra Fine Particles (with a HEPA filter). But in what order should the filters ...
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3answers
214 views

What can cause a 3D printer to catch on fire?

From what I've seen, you can take a typical extruder heater, apply the designated supply voltage without temperature control, and as long as the heater isn't contacting something with a flashpoint ...
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1answer
48 views

Setup for a firefighting solution inside a heated chamber that doesn't destroy the printer?

Heated chambers, especially homebrew ones, might pose a fire risk if the printer inside has a really bad day and its TRP is defective or - oh horror - deactivated. We are dealing with a class A fire ...
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3answers
173 views

Aggressive resin solvent

For the purpose of cleaning, I need an aggressive solvent for cured or partially cured resin that will degrade resin down to its liquid state. I'm looking for one that would eat out specifically resin ...
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2answers
54 views

Long Print with Lotmaxx SC-10

I am trying to print something that might take 15 hours. I don't want to risk my printer so if I print for 15 hours, what is the worst that can happen? So far, I haven't printed anything for more than ...
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1answer
5k views

SLA printers: food-safe resin parts

I've actually read that resin printed parts are not food-safe in Reddit and Formlabs guide. However, it also says that food-safe can be achieved applying some kind of food-safe coat to the printed ...
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1answer
226 views

SLA printers: safety with resin contaminated disposals

I've purchased an Elegoo Mars Pro recently, and I've been watching hundreds of video of all kind of processes, and everyone tells the same: resin is toxic, so you should cure it before throwing it to ...
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1answer
71 views

Extruder increase temperature

I bought a month ago the Artillery Genius. Everything was pretty good until today, I was printing a test cube and it stopped pulling out filament, when I looked the temperature it was -15 °C, a few ...
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1answer
81 views

Paper as build surface - how will that work?

I have a Creality Ender 3 that needs a build surface (both the build-tak sticker and the removable stiff backer). My dad has been pestering me to try using paper as a disposable surface. I am hesitant ...
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2answers
368 views

Advice on power supply wiring for the UK

I've been looking at the Ender series and decided to take the plunge. But I'm unsure on electrical matters. The 110 or 220 volt switch, I assume goes to 220 V as I live in the UK but my main ...
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1answer
2k views

Is PLA safe for masks?

So in light of the in going pandemic, I have begun printing masks for my family and a few friends. As I was printing them the thought occurred to me, "Is PLA safe to be breathing off of?" So that is ...
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2answers
711 views

All-metal hotend, cooling fan failures, and cold-side PTFE

I'm getting a pet bird soon, and I know that off-gassing from heating PTFE above 300 °C creates noxious fumes, which are bird-killer1. To try to prevent even the chance of that I'm replacing my ...
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2answers
7k views

Are silicone socks safe?

It's fairly common for E3D to sell silicone socks for their hot ends. There are also other companies that sell these silicone socks for their hot end cartridges. According to a brief internet search, ...
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1answer
245 views

Would PC be considered food-safe in this setup?

I have one 3D printer with Makerbot mk10 extruder and I would like to print my custom cup for tea or coffee from PC. Other than that, I came across idea that FDM printer will always leave small holes ...
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0answers
74 views

Good food-safe print filament or method? [duplicate]

I want to create a drinking cup that is entirely safe to consume liquids from. I’ve done some research, but I can not seem to find a cheap or easily accessibly food-safe filament. I have also had no ...
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2answers
937 views

Which 3D filament is 100% (or close to being so) food safe and non toxic? [duplicate]

I've recently bought myself a preassembled Prusa i3 MK3S printed and made my first projects. One of them was making a cup with my name on it. I want to use it to drink tea, water etc. I know, however, ...
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1answer
262 views

3D Printers imported from China - avoiding asbestos exposure [closed]

Many 3D printers are made in China, and as asbestos is still legal in China (with large ongoing production it seems). It is thus quite possible to end up with a 3D Printer that has asbestos parts in ...
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2answers
12k views

Best way to deal with Resin Printers in your living space

I know I did something stupid. I just had to have a SLA 3d printer. The issue being I live in a one bedroom apartment. In the months of owning it I have made lots of amazing pieces, I also for the ...
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2answers
178 views

Is there proof that 3D printer made nanoparticles are dangerous? [closed]

Facts: Breaking down (or melting) plastic creates nanoparticles.1 3D printers melt plastic.2 Therefore, 3D printers make nanoparticles.3 Nanoparticles are evil.[citation needed] Wait, What? 1. ...
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1answer
2k views

Are there printers that don't have thermal runaway protection?

This question asks about the reasoning behind thermal runaway protection and how to turn it on. However, how do I know if my printer does not have protection in the first place? Either because it is ...
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2answers
28k views

What is Thermal Runaway Protection?

What is Thermal Runaway Protection (TRP) and why should I enable it? How does one do so in Marlin?
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2answers
354 views

Is it safe to use a 3D printed icing smoother?

I want to 3d print my own icing smoothers, but I'm not sure if its safe to have plastic from a 3D printer in contact with cake icing. Is there any harm in this?
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2answers
17k views

Is PETG filament food safe?

I've been trying to find a 3D printer filament which would not release any chemicals if in contact with heated water for a substantial amount of time. So far, I've easily ruled out both PLA and ABS, ...
5
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4answers
2k views

How fast can printer head move without damaging steppers?

Is there any risk of damaging stepper motors if I set too big travel speed? What is maximum safe travel speed? My printer is a German RepRap Neo. I currently use 120 mm/s. Is it safe to ...
3
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1answer
787 views

Heatbed PID vs Bang-Bang - which one is more stressing on components?

I recently switched from Bang-Bang to PID controlled bed heating. The stock firmware pulsed On/Off with about 5 seconds each cycle. Now with PID, my bed keeps its temperature much more stable, the ...
6
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1answer
661 views

Upgrading to silicone heat bed, will it burn my house down?

I'm looking into upgrading my heated bed and replacing it with a silicone bed. I know nearly nothing about electronics, so I would like someone more knowledgeable to confirm if what I have theorized ...
4
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3answers
4k views

Ender 3 is capable of food safe printing?

I've been looking into the viability of manufacturing a replacement part for a kitchen blender that has a broken part. I found this page that talks about what makes a print food safe. One of the items ...
6
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7answers
5k views

Electric shock from ender 3 printer PSU

I had recently purchased an ender 3 and after setting it up and plugging it in, I received an electrical shock from the power supply. I live in the UK and so I was provided an EU to UK adapter which I ...
12
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5answers
55k views

Serious safety concerns with living in same room as PLA 3D Printer?

I have an Ender 3 which I primarily use for printing with PLA. I haven't branched out to other materials yet. :) I've done some research into PLA fumes and airborne particulates which seemed to ...
5
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2answers
277 views

Out-gassing of printed material when heated

We know from this answer, 3d printed materials continue to outgas after printing and being cured. My question relates to this: How much does heating the printed object after printing (or being cured) ...
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2answers
3k views

Mains powered heatbed safety

I'm building a 40x40x40cm corexy and I am quite impatient so I want the heated to reach the target temperature as fast as possible, so I ordered a Keenovo silicone heater It is a 220VAC 1200Watt bed, ...
4
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1answer
813 views

MOSFET as a safety feature

When going through printer reviews, I often see the presence of a MOSFET listed as an important safety feature. I understand the MOSFET to be a transistor, but I haven't understood how it is used in ...
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6answers
8k views

Commercially available 3D printer fume and UFP extractor

Is there a commercially available fume and nano particle extractor for a 3D printer, like the Ultimaker3 extended? I'm looking for a safe solution, to use at home, for around $800.
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3answers
347 views

Is it safe to print a rotor insert for a centrifuge using a makerbot?

Laboratory centrifuges have buckets that hold the sample tubes in inserts. The buckets are the black things on the rotor in the upper left corner holding the bottles. Examples of inserts are shown ...
6
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2answers
3k views

Is Tetrahydrofuran viable for dissolving PLA and sticking PLA objects together?

According to Wikipedia, Tetrahydrofuran dissolves PLA. It also apparently dissolves PET. THF is considered a relatively nontoxic solvent, with the median lethal dose (LD50) comparable to that for ...
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3answers
5k views

How to transport a 3D printer? Dismount needed?

I need to transport my FDM 3D Printer because I am moving. What are the precautions that one should take? Should I dismount the motors and axes? I would definitively unplug the electronics as far as ...
3
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2answers
661 views

Creating positives for a food-safe silicone mold: safe?

First, a little background. A couple of years ago, I was researching making my own candy, and I came across this page: Lego brick shaped gummy candies, describing how to use real Lego bricks as a ...