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Simple Air Hammer Modifications

By Larry Zoeller

If you these drawings along with the Simple Air Hammer plans from ABANA you will be able to build a 35 pound air hammer. All drawings are not to scale.

Main Base Plate 1" x 27" x 12" Main upright I-beam 54 1/2" x 6' x 6 1/2" Anvil 5" round x 28 1/4"

Cylinder Plate 3/4" x 4" x 10"

54 1/2"

Main Upright Cap 1/2" x 6" x 6 1/2"

Head Adapter 2 1/2" x1" x 3/4" Hammer Head 3" x 3" x 10" 6 1/2" 6"

3/8 n.c. thread

Slider plate 1/2" x 4 1/2" x 9"

Anvil Stay 4" x 1/2" x ? measure after anvil and i-beam are in place

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Guide Head Mount

1/2" cap 2"


18 1/2" 6"


2" 1/2"

1/2" square stock

________________________ 6" ______________________________

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Dies Die welded at a 45 degree angle to the ram 2" x 2" x 3" 3/8" holes Die Plate 3" x 3" x1/2"

Hammer Head Guides

1/2" square stock 16" long 1 1/2" x 3/8' x 16" 1/2' x 3/4" x 16"

Sheet Brass 1 1/2" x 1/8" x 16"

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I got my sheet brass for the guides from MSC 1 800 645-7270 The air cylinder is 1 1/2" bore 10" stroke. The rod must have a 3" extension I used a Norgren K71EAOO-K56-KA2 for the four-way valve I did not use the anvil clamp at the bottom of the anvil base, I just welded the anvil to the main base I did not use a upright base that is shown in the original plans I welded the I-beam to the main base. Any where that the original plans called for 1/2" bolts, I downsized to 3/8" bolts. I used grade five on all fasteners. I used a Norgren mechanically operated 3-way valve instead of the ball valve used in the Kinyon plans. The part number is K41EAOO-KS1KPO. You will need to plug off port 3 on the valve. I have the valve hooked to a foot treadle. I feel that this valve gives a better range of control than the ball valve.

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