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PETG is best, but I use PLA for both the base and pipes with no problem using my remix. If you are using Kelokera's original design parts, you may want to look at my remixes as there has been a lot done to improve the cooling ducts (and base) since his last updates in September. Check this out: https://www.thingiverse.com/thing:3182917

Hero Me Gen3 - CR-10/S Ender 3/Pro/5 OEM Hot-end