Please note

Because of the lack of published trowel and masonry tool histories, the information here is based on other sources that may be less reliable and certainly are incomplete. These include eBay and tools that I purchase myself that are the starting points for my research. I will write what I know as I learn it. If what you read here interests you, please check back often and look for revisions and corrections. Scanned catalogs are either mine or by Rose Antique Tools and used with permission, and are on Google Docs as pdf files. A few are links to other websites. Your photos and information are welcome. Please click on any picture to enlarge it. Comments are welcome, but any with links will be deleted as possible spam.

Saturday, September 6, 2014

Macadamizing Hammer

The macadamizing hammer has a round head when viewed from the top, making every side a striking surface. It can be several shapes in the third dimension, including spherical, oval, ovoid, or disc-shaped. The handle length varies more than other hammers, from about 10 inches (25 cm) to 18 inches (46 cm) or 30 inches (76 cm) or more. Like other hammers for working stone, these were usually sold without handles, allowing the user to choose the best handle for the work. The macadamizing hammer was simply used to break or pulverize stone for road construction. Other names are macadam hammer, nappan knocker, and napping or knapping hammer.

"Macadam is a type of road construction pioneered by Scottish engineer John Loudon McAdam around 1820. The method simplified what had been considered state of the art at that point. Single-sized aggregate layers of small stones, with a coating of binder as a cementing agent, are mixed in an open-structured roadway." Wikipedia Macadam

Macadam hammer from Maine, USA
Macadamizing hammer in new condition (USA)

Evansville Tool Works (USA) macadamizing hammer
French macadamizing hammer 
Macadamizing hammer, 12-3/4" handle


  1. How were these used, and specifically why was the neck so thin?

  2. My guess is that the user sat on the ground, hitting rocks, and that the weight of the hammer head did the work.