MakerBot Print is our newest print-prepration software, which supports native CAD files and STL assemblies,
allows you to interact with all your printers via the Cloud, and many other exciting new features.

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Which printer and hot-end are you using? and which version of cooling duct are/were you using with the Hero Me? Do you have a silicone sock on your hot-end or just the paper and tape? If I know this info, I may be able to help. Silicone socks are the way to go. There are updates coming in the next couple weeks that will improve things greatly.