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Construct-O-craft Construction Sets

Construct-O-craft was a Meccano-like construction system. It was made in the USA from 1945 to at least 1948.

Manufacturer / Distributor

Boxaqr Tool & Manufacturing Co., Chicago 12, Illinois, USA
From 1948: Hedge Tool & Manufacturing Co., Chicago, Illinois, USA

Info from the Metal Constructional Systems Database for CONSTRUCT-O-CRAFT (Ref:COC)

Maker
 
System Type
Meccano principle but sig. differences
Country
USA
Dates
1945 to known in 1948
Material
Steel
Thread
6-32
Boss Type
separate threaded boss (see comment *1)
Boss Thread
6-32
Diametrical Pitch of Gears
30
No. of Parts in System
43
Hole Pitch (Spacing) (mm)
12.7 (multiples of value shown, including half.)
Diameter of holes in Strips(mm)
4.0
Diameter of the Bore in Bosses(mm)
4.0
Diameter of Axle Rods(mm)
3.8
Types of Nuts and Bolts
Nuts: square
Bolts: mush (slotted)
Material/Finish of Nuts and Bolts
Steel with a Dull plated finish
(see comment *2)
Size of the Nuts across Flats (mm)
6.4
Bolt diameter (mm)
5.7

Comments
Strips embossed with crenellated pattern. *1 PulleyDiscs joined by hex threaded boss (¼"x32). Also normal bosses. Both types single tapped. *2 Nut: dull plated brass. Also Nut hex/zinc plated steel/6.3; Bolt Round/plain steel(or zinc plated steel)/6.3.

The MCS document for this system is shown below. It can also be downloaded to your computer if desired here

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Pages from the 'Other Systems Newsletter' which contain information on this system are shown below. They can also be downloaded to your computer if desired here

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Below there are manuals/leafets which can be downloaded by clicking on the appropriate image.


A Construct-O-craft manual for set 500.

Page content last updated - 23rd May 2019