3M 6, 7 series adapter
thingiverse
A surgical mask can be divided into 6 parts, about (5cm x 6cm), and this design can be installed, which can make a surgical mask more useful for several days 可以把一個外科手術口罩, 分割成6份, 約(5cm x 6cm) 再裝上這個設計, 可以使毎個外科口罩多 用幾天 Buy me a coffe if this is work, thanks: https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=GLE46Z2NSDNYU
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With this file you will be able to print 3M 6, 7 series adapter with your 3D printer. Click on the button and save the file on your computer to work, edit or customize your design. You can also find more 3D designs for printers on 3M 6, 7 series adapter.