It is all too easy for the Cardboard Engineer to become unfit. Cutting, scoring, folding and gluing are all worthy and fulfilling activities but none require strenuous exertion. The hitherto lethargic Cardboard Engineer can now create this unique personal training machine. By participating in daily finger exercises new levels of digital dexterity can be reached

Pre-cut and pre-creased - all you need is PVA glue!