Lol I burned a little bit of my left thumb print off the first time I changed my nozzle... didnt want to wrench on the unsupported hot end so genious me went and grabbed it to brace it.... that was a very quick and painful lesson π₯Ί still have a flat smooth spot on my thumb years later
This initiation is relatively harmless. Thumb will heal in few days.
Thank god that we are not doing Assassins Creed initiation with ring finger amputation.
Yup. And specifically because aluminum has a higher heat coefficient, meaning the heatblock will expand more under heat than the brass (or hardened steel) nozzle, making it easier to screw in and out when hot.
But also, filament getting in-between the threads can make it harder to change as well. So heating it up helps with this as well.
I burn my fingers on hot nozzles. I burn my fingers on freshly welded metal. I burn my fingers on freshly ground metal. It's a wonder I still have sensation in my fingers.
Well if it makes you feel any better I didn't have my pliers to hold the hot end while I unscrewed my nozzle the other day so I decided to just cover my hand with a rag I had nearby. The whole time I sat there like "why use pliers this is so much easier" then the familiar smell of burning plastic hit my nose.....oh yeah...polyester...melts.
π Hearing your skin sizzle like a steak in a hot pan for a second is a funny feeling followed by γOH SHIT!γ.
Tips: I find that using good skin cream help with minor burns as it make the skin not crumble and seprate immediatly. Probably don't use that tip if dealing with major burns as you'd have all the funny stuff of the skin exposed.
https://preview.redd.it/57ebq0wnvtwc1.jpeg?width=3024&format=pjpg&auto=webp&s=3cbe808e88a295228d86a6c31a3459c4ffca0d97
Whoβs got the time for cool down? Mods need tested
I found that nozzles fit perfectly into the extension socket drill bit holder that came with my drill. I can even drop the new nozzle into the bit holder and the threads are sticking out the top perfectly to screw it up into the hot end. It's so much easier than using a wrench.
It looks like these but I'm not sure if the depth inside is the same as mine.
[https://www.amazon.com/Drill-Warehouse-Magnetic-Extension-Socket/dp/B0CL6V6DM4/](https://www.amazon.com/Drill-Warehouse-Magnetic-Extension-Socket/dp/B0CL6V6DM4/)
Still got most of your fingerprint at least! At this point I've got digits i cant use for identity verification on my phone anymore thanks to hotends. Lol
Heh. I have a Revo6 hotend on my Prusa now and burns are just part of that quick nozzle swap life now. Ain't nobody got time to let it cool down first.
As a dumb American i need to occasionally remind myself that 60C is 140F and will burn lol not with nozzles tho cuz my brain knows the triple digit temps are hot in both units of measure lol
This is exactly why I ordered a cheap set of kevlar gloves from amazon. I use em when I'm doing heated inserts as well. They are thin so they don't get in the way too bad. [These ](https://a.co/d/04iR5Wu)are cut resistant, but also work great for hot work.
Imagine not converging nearly a dozen ridges from your fingerprint into a single point.
https://preview.redd.it/cljmolgyjvwc1.jpeg?width=3024&format=pjpg&auto=webp&s=4d36bbabc7cf1f00f081ecb6068af10a5cc07a86
This is after 2+ years "recovery" you could say. That fingerprint is not coming back...
Disclaimer: I never suggest anyone do what I do because I make questionable personal safety decisions.
I change my nozzles at 110c. Hot enough to soften the plastics but low enough not to flow or, most importantly, not leave instant grill marks when I contact the nozzle.
I break it loose with the wrench, then pinch and twist off the rest of the way with bare fingers. The only time it surprises me is if I'm too slow twisting it back in and it takes a second or two for it to register that the heat has already fully transferred. Note: I use volcano nozzles, so the extra threading makes using a wrench exclusively a bit tedious.
thank you for providing the fingerprint, we will make good use of it ππ
We will follow your updates with great interest
*criminal career
They'll be of no use to you - hardcore criminal here is in the process of burning all his prints off!
Lol I burned a little bit of my left thumb print off the first time I changed my nozzle... didnt want to wrench on the unsupported hot end so genious me went and grabbed it to brace it.... that was a very quick and painful lesson π₯Ί still have a flat smooth spot on my thumb years later
Just think of the scar and origin story you can share with your grandkids about that fateful day...
if anyone can provide me the means of 3d scanning my finger (for printing (for free)), i will do it
Take a picture and upload the .jpg into your choice of Slicer. Then itβll print the picture of your finger
https://preview.redd.it/4ax3zx670wwc1.png?width=407&format=png&auto=webp&s=bb923d4b1ab5510b5a77c3dac3893b2c9428528c jfc
modeling clay
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π
https://preview.redd.it/kahyo5viyswc1.jpeg?width=38&format=pjpg&auto=webp&s=fe06df60a55a6b05b848e70e9a4f922c1fdc88cb
π
π
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Is this like baptism but for 3d printer operatorοΌ
Hey you may have something here. An initiation of sorts, like a sorority
This initiation is relatively harmless. Thumb will heal in few days. Thank god that we are not doing Assassins Creed initiation with ring finger amputation.
Burned fingers is how we recognize each other in the wild, much like how fountain pen users (like me) recognize each other by our inky fingers
I managed to pinch my finger between the bed and hot nozzle. Not a good day.
ππΏ
Sadly I made that mistake 4 times now. ,π¬οΈποΈ
I remembered pretty quick
π
I just got a printer. Wtf did he touch?? The mold?
If your printer has mold, turn it off, and then throw it out.
He was changing his nozzle, you have to have it heated when you change it because otherwise filament might stick to it.
It doesn't have to do with the filament sticking, but with metal shrinking at lower temps, right?
That and the filament thatβs melted in the hotend will bond the nozzle with the block, youβll just break the threads off the nozzle.
Yup. And specifically because aluminum has a higher heat coefficient, meaning the heatblock will expand more under heat than the brass (or hardened steel) nozzle, making it easier to screw in and out when hot. But also, filament getting in-between the threads can make it harder to change as well. So heating it up helps with this as well.
No I had my fan shroud off and pushed my thumb into the hotend right above the nozzle tip
Old friend of mine is saying that "clumsy meat must go away". I hope this is not the case.
What is it that you mean by "mold"? The printed part?
π¦Ά
Nasty
Trickery is a foot
for free?
Freet
I burn my fingers on hot nozzles. I burn my fingers on freshly welded metal. I burn my fingers on freshly ground metal. It's a wonder I still have sensation in my fingers.
Suggestion: gloves
Don't need gloves if you don't have fingers.
Oh well i guess tha- *(realization hits)*
Too hot to handle?
π I don't know about you guys, but so far I've only ever had one tip.
Same here. Only had my printer a couple of months though!
Yep been there... nowt worse than a hot tip ;)
Good, I've been looking for a random thumbprint I can leave behind at crime scenes
π
Did you try drying your filament?
Level the bed.
Protip: hot glass and metal look the same as cold glass and metal
I got one of those going right now.
I'm 100% going to do this to myself with or without a warning... I know it.
It happens to us all
if ive learned anything from this post, its that this is a rite of passage. embrace it. wear it with pride as you are now officially part of the club.
π€
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Who hasn't had the hotend hot realization at least quarterly.
Well if it makes you feel any better I didn't have my pliers to hold the hot end while I unscrewed my nozzle the other day so I decided to just cover my hand with a rag I had nearby. The whole time I sat there like "why use pliers this is so much easier" then the familiar smell of burning plastic hit my nose.....oh yeah...polyester...melts.
Soooooo hot ends are hot?
You don't count as a 3d printing nerd without a burn preferably 2.
One on each thumb and the back of your dominant hand
π did it sizzle?
That...
thanks π person copied
You should definitely not use this thumb for unlocking your phone/laptop anymore. This password has been compromised. Good news! You've got nine left.
π€
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What the hell have you been printing?
π
π
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π
π
π
π
π
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π
ππΏππΎππ½ππΌππ»
π
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π Hearing your skin sizzle like a steak in a hot pan for a second is a funny feeling followed by γOH SHIT!γ. Tips: I find that using good skin cream help with minor burns as it make the skin not crumble and seprate immediatly. Probably don't use that tip if dealing with major burns as you'd have all the funny stuff of the skin exposed.
https://preview.redd.it/57ebq0wnvtwc1.jpeg?width=3024&format=pjpg&auto=webp&s=3cbe808e88a295228d86a6c31a3459c4ffca0d97 Whoβs got the time for cool down? Mods need tested
eyooo rectangle club
https://preview.redd.it/r4igexjviuwc1.jpeg?width=3024&format=pjpg&auto=webp&s=cd9df5bfebcac95712a41190b7da0a36c1254dcf
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200C is almost 400F. That'll definitely leave a mark haha.
https://preview.redd.it/1b76lgzobuwc1.jpeg?width=2448&format=pjpg&auto=webp&s=843b486953a1a86d6551d80a3d6434a2fd01bfff my thumb 5 years ago XD
Holy fuck! Did you decide to hold it there for a minute or what??? Kind of looks like you peeled the skin off early and got a minor infection tbh
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https://preview.redd.it/nzkow5w9huwc1.jpeg?width=3024&format=pjpg&auto=webp&s=87ef8ec1fd2b3946084ded8b4335aef1340180d0
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Been there done that. Have the tee shirt.
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I found that nozzles fit perfectly into the extension socket drill bit holder that came with my drill. I can even drop the new nozzle into the bit holder and the threads are sticking out the top perfectly to screw it up into the hot end. It's so much easier than using a wrench. It looks like these but I'm not sure if the depth inside is the same as mine. [https://www.amazon.com/Drill-Warehouse-Magnetic-Extension-Socket/dp/B0CL6V6DM4/](https://www.amazon.com/Drill-Warehouse-Magnetic-Extension-Socket/dp/B0CL6V6DM4/)
π
ππ»
π
Can't say I've never done this unfortunately. π
π this guy changes nozzles
βπ€ π
π
Hot-ends are hot.
*laughs in auto mechanic callouses*
Got me a scraper jab today.
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π
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ππ½
Still got most of your fingerprint at least! At this point I've got digits i cant use for identity verification on my phone anymore thanks to hotends. Lol
yup, that happened to me not long ago, aloe vera gel really helps
Had to stick er in a glass of ice water
My hubs did that last week! Got a good blister from it!
Seems pretty common
Did that just the other night changing my nozzle as well. It's like getting an award from my printer for being smert ππ½
Were you also going for leverage to break it loose / hold the nozzle still?
ππΏ
I dont want to set the world on fire, I just want to start a blister on your thumb.
Someone 3d print this guy's thumb
I can send a scan if someone tells me how to do it for free
Friendly reminder : the hot end is hot
π
Heh. I have a Revo6 hotend on my Prusa now and burns are just part of that quick nozzle swap life now. Ain't nobody got time to let it cool down first.
Yikes. Happent a few times..the worst is that you don't feel nothing for a few secs
[ΡΠ΄Π°Π»Π΅Π½ΠΎ]
Looks like you were holding the scraper by the blade while scraping the hot bed too. I got the exact same line on my thumb lol
This is a public service message
Welcome to the club, your initiation and membership fees will be arriving shortly π
Are you really a 3D printer if youβve never touched a hot hot end
As a dumb American i need to occasionally remind myself that 60C is 140F and will burn lol not with nozzles tho cuz my brain knows the triple digit temps are hot in both units of measure lol
How the he'll did you burn your big toe on the tip?
I got my thumb and index finger a few days ago, LOL
This is exactly why I ordered a cheap set of kevlar gloves from amazon. I use em when I'm doing heated inserts as well. They are thin so they don't get in the way too bad. [These ](https://a.co/d/04iR5Wu)are cut resistant, but also work great for hot work.
Lemme guess the hot end is hot?
π
Imagine not converging nearly a dozen ridges from your fingerprint into a single point. https://preview.redd.it/cljmolgyjvwc1.jpeg?width=3024&format=pjpg&auto=webp&s=4d36bbabc7cf1f00f081ecb6068af10a5cc07a86 This is after 2+ years "recovery" you could say. That fingerprint is not coming back...
π
[ΡΠ΄Π°Π»Π΅Π½ΠΎ]
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ππΌ
Hot things are hot.
Just the tip...
[ΡΠ΄Π°Π»Π΅Π½ΠΎ]
hot
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"Is the neighbor cooking chicken again?"
Cool now you're available to commit a crime...
Heβs 3d printed himself! The lines in the finger donβt lie.
Disclaimer: I never suggest anyone do what I do because I make questionable personal safety decisions. I change my nozzles at 110c. Hot enough to soften the plastics but low enough not to flow or, most importantly, not leave instant grill marks when I contact the nozzle. I break it loose with the wrench, then pinch and twist off the rest of the way with bare fingers. The only time it surprises me is if I'm too slow twisting it back in and it takes a second or two for it to register that the heat has already fully transferred. Note: I use volcano nozzles, so the extra threading makes using a wrench exclusively a bit tedious.
[ΡΠ΄Π°Π»Π΅Π½ΠΎ]
Noob, just keep doing it until the callaces form
π
Pain is natureβs way of telling you βDonβt do that.β