April 21, 2014August 13, 2017 - EducationMake your own tin can pinhole planetarium (page 3 of 5) Page 1 / Page 2 / Page 3 / Page 4 / Page 5 (Article continued from previous post) Step 4 . Step 4 continued … . Step 4 continued… Step 4: Secure constellation disc to tin can by folding tabs down and applying sticky tape. Go to next page —>