Does PETG with regular watercontact require postprocessing?
I have a few prints for the garden, which will have contact to water. During daily watering, water will wash over it and it may stay wet for half an hour or so, until the water drains
Will this be an issue with PETG prints? So far, I've only had experience with PLA prints submerged for half a year at a time and those showed no visible issues.
Prusa Mini FW4.4.1
RE: Does PETG with regular watercontact require postprocessing?
It shouldn't no. Just about every plastic bottle on the planet is made from PET of one variety or another.
RE: Does PETG with regular watercontact require postprocessing?
I print alot of parts for water environtmen with PETG for almost two years, without any post processing, no problem at all.
what i learn so far PLA vs PETG :
In very dry condition :
PLA = very good and strong
PETG = very brittle, sometimes i drop the parts from 1 meter high to the floor and it crack/split into pieces.
in water / wet condition :
PLA = very brittle after a few days , even a little bend can snap the filament or break the parts
PETG = so far so good never have any problem. No leak, no crack.
note that i print the parts with all full perimeters (i sett for 20 perimeters) no infill and only using prusaslicer 2.4.0 because of i'm using staggering seams feature, and that feature only available in 2.4.0
RE: Does PETG with regular watercontact require postprocessing?
I have a few PETG things in the yard and they have held up okay but I was playing it safe and gave them a coat of polyurethane.
What I noticed though was a fair bit of decoloring in the sunlight.
Formerly known on this forum as @fuchsr -- until all hell broke loose with the forum software...
You may have problems if saturated items freeze ...
But UV is your bigger threat, a couple of coats of paint will help a lot.
Cheerio,