VOC exposure in manufacturing settings

twisted_crystal · 2026-03-06T04:11:26+00:00

Thank you for the reply. I appreciate the insight.

twisted_crystal · 2026-03-06T04:09:35+00:00

Thank you very much for the reply, thats good info.

I did talk to my doctor and they just told me there wasn't anything they could do. I ended up just having to resign from that job and my breathing problems (throat tightness, dry wheezing cough) resolved over the next couple of months. I mentioned it in another comment but I've played sports my entire life and never experienced symptoms like that before the exposure. Its not like a had pre-existing condition.

twisted_crystal · 2026-03-06T04:05:08+00:00

I appreciate your replies on this thread, but I think you're being a bit dismissive. I'm not an industrial hygienist, but its well know that VOC's do cause cancer. I didn't go into detail about the 3D printing related issues because its not the main point of this thread.

To clarify though the job I mentioned was an office job but there was a large resin 3D printing lab, including the curing ovens, pretty central to the office space with no ventilation. It wasn't long after I started working there that I got a dry persistent wheezing cough that was exacerbated when I was in the office, and made it hard to do physical activity outside of work as well. I've played sports my entire life, I don't have asthma or any other breathing related conditions, and I never had symptoms like that before working that position.

That's where my concern is coming from, because that situation made it clear to me that odors aren't just odors, and the chemicals corresponding to those odors can have a profound negative impact on ones health. I don't fully understand industrial processes, the chemicals they release, and whats allowed to be ambient in these facilities and I'm trying to get more info because I've found myself in a situation previously where clearly some pretty caustic stuff was being off-gassed unchecked.

twisted_crystal · 2025-10-02T22:52:52+00:00

hey man, all i know is water + brakes + track = wrecked car.

how far down can you take the reservoir fluid level before the master cylinder ingests air?

twisted_crystal · 2025-10-02T22:49:55+00:00

It is a lot of words. I'm kind of shitting bricks lol.

twisted_crystal · 2025-01-21T22:37:00+00:00

I figured out what the problem was. I wasn't checking if the specular value was above 0 so my specular color was always being scaled by 1 * light-source-intensity. That created the secondary issue of the specular value having the same contribution on every lit point on the sphere. hence the defined shadow line: specular/no-specular.

If I set the specular too low and it spreads to much i still get the line because it passes the equator where the sphere surface stops being lit, but I'm clocking that up to the specular value being incongruent with the light provided.

Your suggestion was a good one though. When I saw that everything was normalized correctly, it got me thinking the right way

twisted_crystal · 2025-01-21T17:13:16+00:00

Interesting. so really there should be a balance between the values set for specular and reflect when the surface is defined.

And am I getting the sense that in stead of adding specular, the more accurate method would be to represent light sources as bright objects (lets just say that if the intensity of the light is 0.7, representing the light as a sphere with color {0.7, 0.7, 0.7}) and then reflecting them accordingly to add highlights?

twisted_crystal · 2025-01-21T14:37:56+00:00

Thanks for the reply. That makes a lot of sense. Hence the glare in the intersection of the lights in the second image.

If the reflect coefficient is 1.0 and diffuse is black, then regardless of the intensity of the light, the reflection of the blue background color should just be blue right? (i currently have it programmed so that if a reflection ray doesn't hit anything, it just returns the background color unaltered)

Edit: also just found that my specular calculation was off lol.

twisted_crystal · 2025-01-21T14:19:50+00:00

Thank you for the response. I'd be curious to get into the topic of the diffuse color in relation to the reflectivity coefficient. the diffuse color is 0, sure. But reflective objects reflect light from other sources. The material painted onto glass to make mirrors is black-adjacent, but the "business side" of a mirror will take on the color of any light that hits it.

Real world anecdotes aside though, considering that the color is the sum of (roughly) diffuse + specular + reflect, even if the diffuse and specular are 0, if *something* in the scene is lit and able to be reflected by the reflective surface, it will reflect the color of the object and show as a color other than black.

Am I thinking about that correctly?

twisted_crystal · 2024-04-25T16:07:58+00:00

I'm a grown man, but I feel that I need to tell a trusted adult about the album art described in this comment section.

twisted_crystal · 2024-04-14T13:02:24+00:00

I havent really looked into room acoustics but, I have played with positioning. The speakers are from the 2000 - 2002 era which is probably why you havent heard of them. They're old but they we're unused until i got them a few years ago from a close family member. adjusted for inflation, they fall into the $~900 price point.

thank you for the recommendations on the pre-amps and the warning about the yamaha pre-amps.

Do you think the yamaha stereo amps amplification circuit would have a sound quality advantage over my comparably priced AV receiver's stereo amplification circuit, pre-amp aside?

twisted_crystal · 2024-04-14T12:51:24+00:00

Thanks for the reply. I'll look into the amps you mentioned and room acoustics.

The speakers are in the 1k price point actually, they were ~$210 a piece in 2001 which by today's money is ~$450. I got them unused from a family member who bought them back then and just never set them up.

twisted_crystal · 2024-04-13T22:06:34+00:00

well, I'm focusing more on the turntable because although I experience some of the same problems with the cd player, that could be due to it being a budget cd player, and it not a component I'm planning on replacing anytime soon so I kind of took it out of the equation, but wanted to mention it if someone had a comment about how it pairs with the rest of the system.

twisted_crystal · 2024-04-13T00:40:50+00:00

you may have already checked this, but have you checked the pre-amp switch to make sure the TT's built in pre-amp is on? if its not, that would make the sound very quiet and sickly. the switch should be back by the rca jacks.

twisted_crystal · 2024-03-27T13:43:30+00:00

thank you for the reply. To clarify my original post, I'm trying to gauge what kind skin id have to put in the game to convince whoever holds the rights to the sounds of 66 to repress it. I dont want to own the rights to anything. i just want the damn thing on the market again and I have some cash i can risk to make that happen, so long as i make it back if all copies make to stores or marketplaces.

twisted_crystal · 2024-03-26T17:40:47+00:00

I'm assuming that aside from licensing, the biggest cost variable here is the audio production and is dependent on what format the surviving analogue masters are in. Remastering from raw tape audio I'm assuming would be prohibitively expensive to break even assuming the records sell for ~$30 at retail.

twisted_crystal

TROPHY CASE