How to replace the printer head

Not sure what is that blue part ?

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https://community.glowforge.com/search?q=%22the%20blue%20thing%22

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That is the lens removal tool.

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Thank you !!

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Hi @nelsysanchez03! It looks like @geek2nurse and @dklgood were able to help you get this figured out. I can confirm that is the lens removal tool. Since this has been resolved, I’ll go ahead and close this thread, but feel free to create a new thread if you run into any trouble, or have further questions. We’ll be happy to help. Happy printing!