anvilfire.com flaming anvil trademark logo copyright (c) 1998 Patrick J. Dempsey
     HOME!   |   STORE   |   Getting Started in Blacksmithing    
 
   Guru's Den   
   Slack-Tub Pub II   
   Tailgate Sales   
   FAQs   
   Glossary   
   Plans   
   Armoury   
   iForge How-To    
   Health and Safety   
   Book Reviews    
   eBooks On-line   
   Anvil Gallery   
   Vice Gallery   
   Story Page   
   AnvilCAM - II   
  Touchmark Reg.  
   Power Hammers   
   What's New   
Comic of the Week
   Daily Comics   
Daily Metalworking Comics!
   Webring Nexus   
   Our Sponsors   

Tell them you found it on anvilfire.com!

Anvils in America, THE book about anvils

Blacksmithing and metalworking questions answered.



Blacksmithing and Metalworking Tools Historical Preservation.

International Ceramics Products

Hammer Eye Dimensions:

For punches and handle drifts

Hammer Eye Dimensions:

I found a hammer handle manufacturer's list of dimensions and will extract a chart (eventually). A 1.5 to 2.5 pound hammer has a 7/8 x 5/8" oval eye. A 3 to 4 pound is 1" x 3/4".

U.S. Department of Commerce, Forged Tools Simplified Practice Recommendation.

For oval handles.

Handle eye width = 40% of hammer width

Handle eye length = 125% of eye width.

Tolerances +1/16" - 1/32" max.

Tapered sledge eyes taper to center 4° on long axis and 3° on short axis. This is for punches and finished holes.

Note that the above is for a true oval.

- guru - Tuesday, 11/14/06 01:04:50 EST


There are 10 "standard" eye shapes including those used for heavy brush axes and pick axes. Besides the above diemesions the eyes have tapers, front to back 4&$176; and side to side 3° from the ends to the middle. When wedged this prevents the head from comming off as it is likely to do with a straight eye.

Hammer Eye:

My information is not as exact as that in the Guru's response. But anyway, here goes based on my experience.

We have talked about this. If I buy a hammer handle, I get the "16 inch machinist's handle". The eye-end will give you an idea as to dimension. Harcourt's "Elementary Forge Practice" shows the initial punched OVAL hole measures 5/8" x 7/8". After drifting the hole has a 1" length by an 11/16" width. Nothing is written in stone. 5/8" x 1 1/16" is not unusual. An old rule of thumb for hand forged hammers is the eye length is twice its width. Many a hand forged hammer in the U.S. had an oblong eye; ie., the eye had two parallel sides in length. The ends were half round. It is easier to forge and cold finish such an eye when compared with forging an oval eye. It is easier, because you forge a tapered rectangular section and then swage and cold finish the ends.

The initial punched eye I judge to be about 2/3 the size of the finished eye. My drifts are about 8" to 9" long for a 2.5 pound cross peen. The small end should just enter the eye when drifting. I drive the drift in about three quarters of its length, and I drift from both sides. While the drift is in, flatter the side bulges.

If the drift is 8" long and the small end is about 2/3 the finished eye, then 6" up from the bottom will be the finished eye size. The drift has a full taper top to bottom. It is not driven all the way through from one side. Drifting from both sides is advantageous. It will give the eye a slight hourglass shape, the latter being desirable for the insertion and wedging of a wooden haft.

Frank Turley - Tuesday, 11/14/06 01:28:11 EST

Handle Eyes: There are several standard shapes. The main ones are the oval (a true elipse), the round end rectangle and the rectangular or adz eye.

The oval is the standard eye for most blacksmiths hammers and sledges. The round end slot is less common and more suitable to being made on a machine tool like a milling machine. The square hole like the oval hole is punched.

I see a lot of Chinese hammers made from a block of iron/steel with a round drilled eye . . . (worthless).

Guru-


References and Links


2007, 2019 Jock Dempsey, www.anvilfire.com


Copyright © 1998, 2024 anvilfire.com