[3D Printing] Updated PWG Safe G-Code best practice draft

[Michael Sweet]

All,

I have posted an updated stable draft of the PWG Safe G-Code Subset for 3D Printing best practice to:

	https://ftp.pwg.org/pub/pwg/ipp/wd/wd-pwgsafegcode10-20190117.docx
	https://ftp.pwg.org/pub/pwg/ipp/wd/wd-pwgsafegcode10-20190117.pdf
	https://ftp.pwg.org/pub/pwg/ipp/wd/wd-pwgsafegcode10-20190117-rev.pdf

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Michael Sweet, Senior Printing System Engineer