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You could put a simple one way flap with a gasket to seal, I think they sell these for dryers. I dunno if your activated carbon extraction system will have enough airflow to shut the dryer flap, but it could work. But yeah most likely you'll end up with a lot of lint in your 3d goo
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May 23, 2022 01:37
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Please don't gently caress with joining a fume exhaust and a forced heated air exhaust together.
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May 23, 2022 11:40
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Hadlock posted:You could put a simple one way flap with a gasket to seal, I think they sell these for dryers. I dunno if your activated carbon extraction system will have enough airflow to shut the dryer flap, but it could work. But yeah most likely you'll end up with a lot of lint in your 3d goo No. Just no.
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May 23, 2022 14:22
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biracial bear for uncut posted:Please don't gently caress with joining a fume exhaust and a forced heated air exhaust together.
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May 23, 2022 14:23
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Those check valves barely work for two forced air systems
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May 23, 2022 14:58
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biracial bear for uncut posted:Please don't gently caress with joining a fume exhaust and a forced heated air exhaust together.
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May 23, 2022 16:44
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Just use an inline-fan after the Y-part that can pull more air than the dryer can put out, simple 
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May 23, 2022 17:03
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Vaporware posted:Those check valves barely work for two forced air systems Yeah I always figured it some point that poo poo gets blown back in even if you put like a filter on one to try and remove it somehow. Honestly I’m fine with using a respirator. My concern is getting right those materials from the area safely, so if my wife goes in to do the wash there’s not toxic chemicals lingering.
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May 23, 2022 17:07
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What is the ownership/use ratio of FDM to Resin printers in this thread My guess is 8:1 Every time I read about skin allergies uv, gloves and toxic fumes I'm just like 
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May 23, 2022 17:33
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I have both, but hobby money is mostly going towards resin printer at the moment so I can finally finish Wahrhammer 40k armies I started in the late 90s. Once that's done I'll be working on my filament printer for handy and useful things.
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May 23, 2022 17:45
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Hadlock posted:What is the ownership/use ratio of FDM to Resin printers in this thread If I had a separate space to dedicate to a resin printer I'd have one in a heartbeat. All the fumes and cleaning without that make it a hard pass.
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May 23, 2022 17:45
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I absolutely love resin printing, far more than FDM at the moment (though that may change with some of the newer printers that will be arriving on the market in the coming year). With that said, I absolutely would not recommend it to someone who doesn't have the dedicated space to set up a 3D printer so that pets/kids can't get into it, and that can keep spills/smells away from the rest of the house. I personally haven't had an issue with resin odors (the IPA used in cleaning resin has a much stronger odor, in my opinion), but I freely acknowledge that YMMV.
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May 23, 2022 18:14
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I have a separate building in my backyard for my hobby poo poo and I still won't gently caress with resin printers because the nerve damage in my hands from chemotherapy = nope not going to risk dropping no-poo poo toxic stuff/splash exposure to industrial toxins. Plus my use cases for 3d printing don't see any benefit for a resin printer at hobbyist pricing.
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May 23, 2022 19:55
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I'm really keen on resin printing, but everytime I start to do my research I start to second guess, especially since I have young kids who always want to run around underfoot. I have a pretty drafty garage, so I could find the space. But I also mysteriously just started to get itchy esczma in my 30s, so random exposure to materials in my skin concerns me a bit. I have been experimenting with using UV resin like a paint to finish my fdm prints, curing until it is inert and sanding them. It does a great job, and I always wear a respirator outside, but I'm concious that making all those particles that get everywhere can't be good.
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May 23, 2022 20:26
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Sanding UV cured resin is generally a bad idea unless it's wet sanded or in an isolated spray booth. I'm pretty OK with the risks of liquid resin as I have protection and ventilation procedures for it but sanding would give me the heebie jeebies.
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May 23, 2022 20:45
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Hadlock posted:What is the ownership/use ratio of FDM to Resin printers in this thread Has to be almost entirely FDM, skewed by 3 or 4 of us being major resellers for resin. Honestly unless your doing miniatures there's almost no reason to have a resin printer, vs the strength and variety of materials you can use in a cheapo FDM printer
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May 23, 2022 20:51
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The resin people hang out in the Tabletop 3d printing thread
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May 23, 2022 21:04
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Ok so we have a gun 3d printing thread, and a tabletop 3d printing thread, and a 3d modeling thread, this thread Any other threads I should know about? Hadn't seen the tabletop thread before
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May 23, 2022 22:01
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I only have an FDM. The rest of my hobby brainpower is split among my laser cutters, silhouette, and CNC project.
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May 23, 2022 22:31
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Holy crap, all this talk about resin printing has got me thinking maybe it would be safer to just invest in a beryllium printer instead.
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May 23, 2022 22:31
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...but what if we just extruded spiders?
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May 23, 2022 23:30
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I started off with resin mostly for printing minis, then picked up an Ender a year later. 90% of my printing is FDM now, with the resin reserves for the high-detail stuff. To be fair though, I’ve made something like 5x the initial cost of the resin printer casually selling stuff on eBay.
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May 23, 2022 23:32
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No regrats starting and staying with resin  I just love how little I have to screw around with it. Not at all to be exact, literally leveled the platform once when I got it like 2 years ago and haven't touched anything since. Just print. I think the resin mess tends to be greaty overstated. I just dunk the prints into IPA, then throw them outside or under UV light and it's done. Obviously there are some use cases where FDM would be much better but resin really covers a lot more stuff for me than just miniatures.
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May 23, 2022 23:36
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The fumes and clean up isn't that bad. The most annoying thing is feeling like you have to pray to the Resin Gods for the print to come out correctly, and others are just like "I print perfectly all the time idk what you're on about "Like, the above poster. 
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May 23, 2022 23:56
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mobby_6kl posted:No regrats starting and staying with resin Seconding this; people slop chemicals around their kitchens, bathrooms, and other parts of their house that are just as harsh as (if not harsher than) resin when it comes to getting them in their skin or eyes, or breathing their fumes into their lungs. Often without even pausing to put on the appropriate PPE. This is not to minimize how toxic resin is, you absolutely don't want to get it on you or leave it on your skin for any length of time. But if you treat it with respect and don't just casually slop it around like people tend to do with bleach or other dangerous household chemicals, you'll be OK. Besides, a lot of FDM printing is not without its dangers, either. Even without the threat of thermal runaway burning your house down (a threat which I acknowledge has largely been solved by the more reputable FDM printer manufacturers), there's still some filaments that you absolutely do not want to extrude without having proper ventilation. And of course let's not forget the whole "acetone vapor bath to smooth ABS prints" thing I see some people elsewhere still recommending. 
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May 24, 2022 00:02
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I got an FDM shortly after when my buddy got his and he's made the jump to resin since then. I don't know if it was to one-up me so he's the only one in the social circle with one or something but yeah I have the same concerns as a few others upthread- I don't want my pets getting into any nasty stuff by accident and I'm already super icked out when using normal household cleaners. I'm ok with printing sliced up miniatures on my prusa mini+, gluing them together, and putting up with them having seams so I don't have to deal with all that. Hell, the few times I absolutely wanted something in resin I just hit up my buddy.
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May 24, 2022 00:06
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frogge posted:I got an FDM shortly after when my buddy got his and he's made the jump to resin since then. I don't know if it was to one-up me so he's the only one in the social circle with one or something but yeah I have the same concerns as a few others upthread- I don't want my pets getting into any nasty stuff by accident and I'm already super icked out when using normal household cleaners. I'm ok with printing sliced up miniatures on my prusa mini+, gluing them together, and putting up with them having seams so I don't have to deal with all that. Hell, the few times I absolutely wanted something in resin I just hit up my buddy. And again, that's totally understandable. I have a separate room my resin printers are in, and the door is kept closed at all times. My cats sometimes look at the door with that "wonder what's in there" look, but a few cat treats in their dish in the kitchen usually takes care of that.
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May 24, 2022 00:09
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Sydney Bottocks posted:Seconding this; people slop chemicals around their kitchens, bathrooms, and other parts of their house that are just as harsh as (if not harsher than) resin when it comes to getting them in their skin or eyes, or breathing their fumes into their lungs. Often without even pausing to put on the appropriate PPE. There is a metabolic pathway in the liver that creates acetone, and therefore a metabolic pathway in the liver to break down acetone. There's no metabolic pathway for your turbocancer resins.
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May 24, 2022 00:26
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insta posted:There is a metabolic pathway in the liver that creates acetone, and therefore a metabolic pathway in the liver to break down acetone. There's no metabolic pathway for your turbocancer resins. Given that acetone fumes can irritate the air passages, cause acetone poisoning if too much is ingested, and produce symptoms ranging from nausea to an actual coma, I'm going to err on the side of caution and say that just because it's not rated as a carcinogen and that the body produces a certain amount of it naturally, doesn't make it any safer to breathe in. Also, as I have repeatedly stated, resin can be very dangerous if handled improperly, and should be used with caution and the proper PPE, ventilation, etc. Just like acetone. Sydney Bottocks fucked around with this message at 00:48 on May 24, 2022 |
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May 24, 2022 00:45
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I'm going to continue to invent poo poo because I can't print at 50 micron layers reliably.
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May 24, 2022 00:50
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insta posted:I'm going to continue to invent poo poo because I can't print at 50 micron layers reliably. Invent what, the stuff I mentioned above that I found on several different government and medical websites by doing a cursory google search? That what you mean?
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May 24, 2022 01:02
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There is no legitimate use case for acetone in an FDM process and anybody that recommends using it for any reason to post-process FDM prints is at minimum an idiot and at most maliciously evil. Those stupid loving vapor smoothing projects people post are ludicrously unsafe for reasons ranging from harmful inhalation to combustion unless you have the industrial background to know how to safely do it, and following some bullshit walkthrough on hackaday or Reddit doesn't count. Having said that, the blithe attitude people use when talking about casual handling and processing of resin prints is even worse. Where the gently caress do some of you live where just throwing your waste alcohol/resin bins outside isn't having a lovely neighbor call the local EPA on you? Because that is literally a health and safety violation in any city that gives a poo poo about industrial waste spills (and anything more than a gallon is considered a spill, and anything more than 5 gallons a major spill). I guess if you live in Flint, Michigan it's all good?
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May 24, 2022 01:29
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biracial bear for uncut posted:There is no legitimate use case for acetone in an FDM process and anybody that recommends using it for any reason to post-process FDM prints is at minimum an idiot and at most maliciously evil. Ideally, people should contact their local waste disposal agency and find out what to do to properly dispose of hazardous chemicals, like IPA that's contaminated with waste resin. My guess is that most people treat it like when other people manually change the oil in their car on their own, and just dump it in the trash in the dead of night.
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May 24, 2022 01:40
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Flexible magnetic build plate that I ordered weeks ago finally showed up. Ho boy this is such a huge upgrade over the glass one. Wondering how long it’ll be before I have to start hairspraying it but so far so good with the first couple prints. Unrelated question: that stupid silicone sock that goes over the hot end keeps falling off. Is it …bad to run it without? Seems to be printing fine and keeping consistent nozzle temps regardless of whether I bother shoving it back on there or not.
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May 24, 2022 01:46
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Sydney Bottocks posted:Invent what, the stuff I mentioned above that I found on several different government and medical websites by doing a cursory google search? That what you mean? I said me, not you.
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May 24, 2022 02:27
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insta posted:I said me, not you. Ah gotcha, in that case my apologies for misreading your post, it was a rough day at work today. 
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May 24, 2022 02:33
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biracial bear for uncut posted:There is no legitimate use case for acetone in an FDM process and anybody that recommends using it for any reason to post-process FDM prints is at minimum an idiot and at most maliciously evil. Knock it down a bit, eh?
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May 24, 2022 06:10
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CH Science posted:Flexible magnetic build plate that I ordered weeks ago finally showed up. Ho boy this is such a huge upgrade over the glass one. Wondering how long it’ll be before I have to start hairspraying it but so far so good with the first couple prints. A sock can save your life in the case of a serious serious serious jam where filament.... consumes your entire hotend Ask me how I know this (hint: I've done it three times, and had a sock for the third) But in general it's not necessary, and it it's falling off, it's probably not actually on the hotend correctly
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May 24, 2022 06:34
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I just got a bunch of cheap replacement heater blocks after the first time I managed to entomb my hotend. The sock didn't help much anyway. e:and thermistors, it's not worth trying to save them
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May 24, 2022 08:18
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Sydney Bottocks posted:My guess is that most people... just dump it in the trash in the dead of night. People that do that are definitely assholes. It isn't even that hard to do, literally every Autozone and Advance Auto store (and probably O Reilly's and Pep Boys as well as any other dedicated auto parts store that sells oil) will take your used oil for recycling. All you have to do is dump the old oil from the drain pan you used while changing the oil back into the new oil container after you've poured the new oil into your car, then give those containers to any of those stores for recycling. If there is no local procedure for disposing of your hobby waste materials, that should give you pause over how much waste you generate in a hobby, not make you say "gently caress it, I'll just set it outside and let it become the rest of the world's problem". ImplicitAssembler posted:Knock it down a bit, eh? I'll tone it down when people stop making "aw, it's not that big a deal" posts about poo poo that will literally permanently harm people if they don't know exactly what they are doing.
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May 24, 2022 10:58
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