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Zaalblokken E

Zaalblokken E
Zaalblokken (swage block) 17.7 x 17.7" x 4.9" 275 pounds.
The Finest Industrial Blocks had a selection of holes of various shapes and took advantage of as much of the available surface as possible.

Some industrial blocks were carefully designed so that the holes reduced the thick sections of the block to no more than an inch or two in order to produce a better quality casting.

This block was found in a reprint of the 1912 Dutch catalog, Louis Reijners Amsterdam, Gereedschappen, p.73 and is one of seven shown of ten similar blocks ranging from 300x300 mm to 500x500 mm in size. Three larger blocks were not shown.

When I go to talk to foundries about making blocks I now carry this drawing with me. I want to why foundries in 1912 could cast ~7/16" (12mm) holes through a block this thick and modern foundries do not want to do anything smaller than 1" (25.4mm).

  Features (mm)

Round Holes
80, 68, 50, 45, 38, 34, 30, 20, 17, 15, 14, 12

Square Holes
55, 50, 42, 35, 30, 25, 20, 15

Rectangular Holes
75x30, 75x20, 80x20, 60x25, 60x22, 50x22, 40x25, 40x16, 28x16

Half Rounds
15, 18, 20, 22, 30, 35, 40, 45, 50, 60, 70, 80

90° V groove : (1) 20

Hex groove (inches)
7/16", 1/2", 5/8", 3/4", 7/8"

Special : Wheel Tire Curve



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