| The Public Paperfolding History Project
Last updated 22/9/2025 x |
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| Das Frobel'sche Faltblatt, 2nd Edition, by August Koehler, 1872 | |||||||
| The second 'expanded and
improved' edition of 'Das Frobel'sche Faltblatt'
(Froebel's Folding Sheet) ) by August Koehler was
published by Hermann Bohlau in Weimar in 1872. A full copy of the work can be accessed online here. In this record 'Das Frobel'sche Faltblatt' is followed by parts of another work by the Baroness Marenholz-Bulow, which appears to be unnconnected with it. **********
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********** Analysis The 2nd edition has been divided into two parts, but otherwise contains much the same material as the 1st edition. Some of the illustrations have been updated. Plates 1 and 2 have been redrawn, but the pictures they contain are otherwise similar to those in the first edition. The first 8 pictures in Plate 3 are also similar to those in the first edition but pictures 9 to 12 are new. ********** Picture 9 shows an irregular hexagon made using 22.5/45/90 degree folding geometry.
********** Picture 10 shows a regular hexagon made using 30/60/120 degree folding geometry.
********** Pictures 11 and 12 show a method of producing a regular octagon by folding each edge onto each diagonal in turn.
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