{"product_id":"hollow-mask-illusion","title":"Hollow Mask Illusion","description":"\u003cp\u003eThis model prints in two parts and will need support for the main block part on the convex face side. This is already set up in the print profile.\u003c\/p\u003e\u003cp\u003e \u003c\/p\u003e\u003cp\u003eThe base has two cylinder shapes to guide alignment. You should glue the two pieces together. See photos for which way to align the pieces.\u003c\/p\u003e\u003cp\u003e \u003c\/p\u003e\u003cp\u003eI printed this in a few materials. One of the materials was a semi-translucent white PLA. This type of filament did not work well for the illusion. I recommend using a matte filament or solid white or gray regular PLA. I would discourage using dark filament of any kind.\u003cbr\u003e\u003cbr\u003e\u003ca target=\"_blank\" href=\"https:\/\/en.wikipedia.org\/wiki\/Hollow-Face_illusion\" rel=\"nofollow noopener\"\u003ehttps:\/\/en.wikipedia.org\/wiki\/Hollow-Face_illusion\u003c\/a\u003e\u003c\/p\u003e\u003cp\u003e \u003c\/p\u003e\u003cp\u003eThe Hollow Mask Illusion (aka Hollow Face Illusion) is an optical illusion where a concave face appears as convex. Lighting conditions must be met for this illusion to appear. The convex (hollow) face must be illuminated with direct facing light (see illustration photo).\u003cbr\u003e \u003c\/p\u003e\u003cp\u003eThe female face used in this design is from here: \u003ca target=\"_blank\" href=\"https:\/\/www.thingiverse.com\/thing:979818\" rel=\"nofollow noopener\"\u003ehttps:\/\/www.thingiverse.com\/thing:979818\u003c\/a\u003e\u003c\/p\u003e\u003cp\u003eI made a remix of this face where I corrected some issues with it like holes and uneven leveling and not being symmetrical.  You can get it here \u003ca target=\"_blank\" href=\"https:\/\/www.thingiverse.com\/thing:6782856\" rel=\"nofollow noopener\"\u003ehttps:\/\/www.thingiverse.com\/thing:6782856\u003c\/a\u003e\u003c\/p\u003e\u003cp\u003e \u003c\/p\u003e\u003cp\u003eThe original model has “creative commons with attribution” licensing.\u003c\/p\u003e\u003cp\u003e \u003c\/p\u003e\u003cp\u003eI give the following permissions that align with original licensing. \u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eYou can:\u003c\/strong\u003e\u003cbr\u003eSell printed models (online or locally)\u003cbr\u003eCreate remix versions with attribution\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003ePlease don't:\u003c\/strong\u003e\u003cbr\u003eSell the model files\u003cbr\u003eClaim the model as your own\u003cbr\u003eClaim remixes as solely your own\u003cbr\u003e \u003c\/p\u003e\u003cp\u003e \u003c\/p\u003e\u003cp\u003eDesign by Daann_ii on MakerWorld (license: BY).\u003c\/p\u003e","brand":"Mymadmanlab","offers":[{"title":"Default Title","offer_id":67415218356528,"sku":null,"price":15.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0987\/0809\/5280\/files\/0_e5947bae-46fc-4084-a837-d06925edefa8.png?v=1785407429","url":"https:\/\/mymadmanlab.com\/products\/hollow-mask-illusion","provider":"Mymadmanlab.com","version":"1.0","type":"link"}