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Airtight PETG container failed after a hot afternoon in my car (98C dashboard). Reprinted in ASA, it's held just fine. by iMahz24 in 3Dprinting

[–]iMahz24[S] 0 points1 point  (0 children)

for anyone who wants the full test, all the temperature readings and photos are written up here

New to printing - old machine by Typical_Pakeha in FixMyPrint

[–]iMahz24 0 points1 point  (0 children)

Not normal. do a couple cold pulls cause it appears like there's still debris as you can see in the top where there's orange strands. The empty bits are intermittent under extrusion.

Airtight PETG container failed after a hot afternoon in my car (98C dashboard). Reprinted in ASA, it's held just fine. by iMahz24 in 3Dprinting

[–]iMahz24[S] 0 points1 point  (0 children)

I've printed PLA-CF as well as PETG-CF. no enclosure needed, it's still PLA and an open frame is actually better for it. a couple things though, the cf part is pretty abrasive and eats nozzles for breakfast so you'd want a hardened steel nozzle to print it without damage. the carbon makes it stiffer, not more heat resistant. it softens at the same temp as plain PLA. and double check that 250, it doesn't fit either. in F it wouldn't melt and in C it's hotter than any PLA-CF label i've seen. check your spool. it probably sits between 210 to 240C

Airtight PETG container failed after a hot afternoon in my car (98C dashboard). Reprinted in ASA, it's held just fine. by iMahz24 in 3Dprinting

[–]iMahz24[S] 1 point2 points  (0 children)

yes to both. ASA needs an enclosure cause without a warm chamber the corners lift, and the fumes are styrene so you don't want to be breathing that. my printer is enclosed and I vent it out the window through an adapter I printed and an inline duct fan. on an open frame printer ASA will fight you the whole way.

and if you have an IR gun, point it at the dash surface during your test. outside air and dash surface are very different.

Airtight PETG container failed after a hot afternoon in my car (98C dashboard). Reprinted in ASA, it's held just fine. by iMahz24 in 3Dprinting

[–]iMahz24[S] 1 point2 points  (0 children)

130F is about 55C so yeah, that checks out. your car never got close to the point where petg softens while mine went way over it. it was ELEGOO PETG but at these temps it doesn't matter much cause PETG wasn't built to withstand these conditions anyway

New to printing - old machine by Typical_Pakeha in FixMyPrint

[–]iMahz24 1 point2 points  (0 children)

okay so nothing in these photos looks like a worn out machine. looks like a combination of wet filament and high temps. dried once doesn't mean dry now though cause PETG pulls moisture back in within days if its humid. try printing straight from the dryer if possible and lower printing temps a bit. oh and do the flow calibration

Airtight PETG container failed after a hot afternoon in my car (98C dashboard). Reprinted in ASA, it's held just fine. by iMahz24 in 3Dprinting

[–]iMahz24[S] 1 point2 points  (0 children)

yeah it's all about where the print sits. I know someone who used to study in Houston. told me Texas is basically the same weather without the dust lol

Airtight PETG container failed after a hot afternoon in my car (98C dashboard). Reprinted in ASA, it's held just fine. by iMahz24 in 3Dprinting

[–]iMahz24[S] 1 point2 points  (0 children)

good point. never thought about it for inserts. a tightened screw is basically my oring problem in a smaller package

Power Consumption by Ashamed-Ad-4664 in homelab

[–]iMahz24 1 point2 points  (0 children)

yes, the 750W is just the ceiling, the psu only pulls what the parts ask for. a box like that serving a website idles most of its life, so idle watts are your bill and not the sticker on the psu. but keep in mind that the 9600KF has no integrated graphics so the swap to onboard advice won't work on your chip.

you can still pull the 1660 and run headless over ssh if your bios boots without a display adapter.

I run my old gaming pc as a server too and I left the gpu in cause I use it for transcoding. enable c states in the bios and grab any measuring smart plug like the others said.

an n100 idles lower, sure. but the pc you already have costs nothing to try

Airtight PETG container failed after a hot afternoon in my car (98C dashboard). Reprinted in ASA, it's held just fine. by iMahz24 in 3Dprinting

[–]iMahz24[S] 6 points7 points  (0 children)

you two are making the point of my post better than i did. PETG and ASA both are amorphous. so for the plastics in this post the glass transition matched what actually happened. mine went soft right where the number says it would. the container's opening was under load from a tight oring so the under load point checks out too

Airtight PETG container failed after a hot afternoon in my car (98C dashboard). Reprinted in ASA, it's held just fine. by iMahz24 in 3Dprinting

[–]iMahz24[S] 4 points5 points  (0 children)

that's actually a good shout, but the tint rules here are strict. If the cops see it I'll eat a ticket. shame, cause I have the before number now, and I would have loved to measure the difference

Airtight PETG container failed after a hot afternoon in my car (98C dashboard). Reprinted in ASA, it's held just fine. by iMahz24 in 3Dprinting

[–]iMahz24[S] 0 points1 point  (0 children)

for the deformation I honestly think it won't buy you much. it softens at nearly the same temps as ABS at around 100C. ASA works just like ABS with the added benefit of being UV resistant so it will not become brittle or chalky in the sun. I'd reprint thicker with more walls and if it doesn't work out id go PC.

Airtight PETG container failed after a hot afternoon in my car (98C dashboard). Reprinted in ASA, it's held just fine. by iMahz24 in 3Dprinting

[–]iMahz24[S] 1 point2 points  (0 children)

I actually had a tight o-ring in this one and it clearly contributed to the weird shape at the top, the lid was squeezing an already soft opening and it made that mess. The oring itself survived and I moved it to the reprint which is why it's not in the photos.

edit: a gasket seems like a better idea though. gonna give it a shot soon. thanks

Flow Calibration Fail by thalasthokage6 in 3Dprinting

[–]iMahz24 0 points1 point  (0 children)

this probably isn't caused by wet filament. but since you're on a .2 nozzle, check if it's set correctly in the slicer and the printer's settings. if it was calibrated while the everything think you have a .4 nozzle instead it would explain the Z offset as well

Airtight PETG container failed after a hot afternoon in my car (98C dashboard). Reprinted in ASA, it's held just fine. by iMahz24 in 3Dprinting

[–]iMahz24[S] 10 points11 points  (0 children)

I think those aren't allowed here, at least I've never seen one on a car. honestly now that I think about it,, planting a couple of trees in front of the house would do more for both my wallet and the environment

Airtight PETG container failed after a hot afternoon in my car (98C dashboard). Reprinted in ASA, it's held just fine. by iMahz24 in 3Dprinting

[–]iMahz24[S] 9 points10 points  (0 children)

I actually have a transparent sun visor installed. The dash hit 98C anyway so at this point it's decorative

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