Waterproof petg

[trail fossil]

does anyone have any ideas on how I could make a petg part withstand 100c water 24/7? is their any coatings or sprays I could use to help protect it

[outer stream]

you up for experimenting? try engine paint or a high temp silicone paint

[novel pasture]

no no no no

paint wont fully insulate

you need to look at the glass temperature range of the plastic

you may need to go to some fancy filament like asa or something super high temp

[prime estuary]

what is it's intended purpose?

[twilit anvil]

what vapor said

if the temp get above its glass transition temp it will start to deform and get soft.

iirc thats 80-85°C for PETG, so no. No way it can withstand 100°C for any longer than a few seconds until itself gets above said temp point.

[fallen arch]

coat it with metal
PETG can't endure it, but crystallized PET maaaybee can.

[twilit anvil]

If the shell of metal is thick enough its not the PETG withstanding it but the metal itself holding the PETG that wants to bend and deform in place... At that point just get the thing metal 3d printed from a service lol

[compact jolt]

Petg at 100 will shrink

And will deform if under load

You might wanna try asa, some of them can widstand up to 110 but you can check other materials