Trying to build homemade planishing hammer - Pirate4x4.Com : 4x4 and Off-Road Forum

TheRipper · 06-21-2004, 12:53 PM

I was wondering if anyone has a good idea for the type of valve needed to control a air cylinder for a homemade planishing hammer?There are a lot of really smart people on this board with great idea's so I am curious what your's are.People that are just going to say buy a kit or buy one built please do not respond.I just like to build stuff from nothing because it gives you new ideas of what else you might build.I am just trying to figure out how to apply pressure to the air ram and make it relieve over and over to keep a hammering motion going.I have researched it and alot of them seem to have around 900 blows per minute and use many different cfm's per minute rating.I am assuming this will be determined by the size of cylinder you use.One thing I do know if you could set up a small relief in the pressure somewhere to make it get a hammer effect but that seems the gettho way and non consistent.Thx for any input given.

big97redtj · 06-21-2004, 01:06 PM

It might not be what you are after, but we made more of a mobile one using an air chisel and a machined puck welded to a damaged point chisel. It works great for moving floor boards around to gain clearance.

Hickeyjones · 06-21-2004, 01:18 PM

Go here

HaWiiLuVeR · 06-21-2004, 04:30 PM

i was noticing last week that eastwood company has a planishing hammer on the back of their latest catalog that uses what looks like a modified air chisel. has a foot control for the air.

http://www.eastwoodco.com/shopping/p...ProductID=1562

frankenfab · 06-21-2004, 05:06 PM

A couple of links for you:

http://www.metalshapers.org/
http://groups.yahoo.com/group/metalshapers/

You can find the information there.

SeaBass44 · 06-21-2004, 05:37 PM

seen some foot controls on ebay $30-50, that an air hammer, might be a good start? what ya building

66CJdean · 06-22-2004, 05:15 PM

Try this site also. http://www.fournierenterprises.com/videocov.htm
They have some cool stuff there.
A foot paddle is what you will need and the hammer will always be on but the foot peddel will be what stops the flow of air not the trigger. Se if you can find a paddel that is variable not just on/off so you can control the blows.

TB76Bronco · 06-22-2004, 06:54 PM

Seems like a ball valve would work to control the air flow. That should give you a variable rate. You could probably add a spring and a bracket and turn it into a foot pedal.

TheRipper · 06-23-2004, 11:15 AM

Thank's for all the reply's everyone.I think I will start with a foot control and a needle valve to control the air flow pressure.The foot control might even be pressure sensitive I am not sure.I geuss I will buy that first.Well thank's again and off to ebay I go..lol

06-21-2004, 12:53 PM	#1 (permalink)
TheRipper Registered User Join Date: Sep 2003 Member # 22721 Location: FORT WORTH,TX Posts: 2,236	Trying to build homemade planishing hammer I was wondering if anyone has a good idea for the type of valve needed to control a air cylinder for a homemade planishing hammer?There are a lot of really smart people on this board with great idea's so I am curious what your's are.People that are just going to say buy a kit or buy one built please do not respond.I just like to build stuff from nothing because it gives you new ideas of what else you might build.I am just trying to figure out how to apply pressure to the air ram and make it relieve over and over to keep a hammering motion going.I have researched it and alot of them seem to have around 900 blows per minute and use many different cfm's per minute rating.I am assuming this will be determined by the size of cylinder you use.One thing I do know if you could set up a small relief in the pressure somewhere to make it get a hammer effect but that seems the gettho way and non consistent.Thx for any input given. __________________ [SIZE="5"][COLOR="Blue"]www.rockjunkie.net[/COLOR][/SIZE] [URL="http://www.crackslinger.com/login.php"]http://www.crackslinger.com/login.php[/URL] [URL=http://www.pirate4x4.com/forum/showthread.php?t=313836]Link's to rockwell question's and info...[/URL] [URL="http://www.ouversonengineering.com/"][SIZE="5"]http://www.ouversonengineering.com/[/SIZE][/URL] Last edited by TheRipper; 06-21-2004 at 12:57 PM.

06-21-2004, 05:06 PM	#5 (permalink)
frankenfab Registered User Join Date: Apr 2003 Member # 18989 Location: Utah Posts: 526	A couple of links for you: http://www.metalshapers.org/ http://groups.yahoo.com/group/metalshapers/ You can find the information there. __________________ A flash of lightning illuminated the object, wretch, hideous, filthy daemon. A new species would bless me as its creator.

06-21-2004, 05:37 PM	#6 (permalink)
SeaBass44 www.12voltguy.com Join Date: Feb 2000 Member # 40 Location: 80 miles n-sac in Oroville, CA Posts: 30,709	seen some foot controls on ebay $30-50, that an air hammer, might be a good start? what ya building __________________ 12voltguy info@12voltguy.com--davezoffroadperformance.com # 530.532.4529 TTC 2010 1989 BRONCO -Awesome web development for your business. www.mudnworks.com mud@mudnworks.com Pat's W I D E TOYOTA Front Axle --07 KTM 450XC----with "stuff"

06-22-2004, 05:15 PM	#7 (permalink)
66CJdean Pirate4x4 Addict! Join Date: May 2000 Member # 940 Location: Lincoln, Ca Posts: 6,398	Try this site also. http://www.fournierenterprises.com/videocov.htm They have some cool stuff there. A foot paddle is what you will need and the hammer will always be on but the foot peddel will be what stops the flow of air not the trigger. Se if you can find a paddel that is variable not just on/off so you can control the blows. __________________ WWW.PCRYO.COM Deep Cryogenic Tempering Service Find all my products at www.KICKASSOFFROAD.COM 916-434-6978 Custom Axles built to order. Got 40 spline? I have the hubs, spindles, and axles you need to kickass! Custom Hummer wheels and centers Axle Resplining

06-23-2004, 11:15 AM	#9 (permalink)
TheRipper Registered User Join Date: Sep 2003 Member # 22721 Location: FORT WORTH,TX Posts: 2,236	Thank's for all the reply's everyone.I think I will start with a foot control and a needle valve to control the air flow pressure.The foot control might even be pressure sensitive I am not sure.I geuss I will buy that first.Well thank's again and off to ebay I go..lol __________________ [SIZE="5"][COLOR="Blue"]www.rockjunkie.net[/COLOR][/SIZE] [URL="http://www.crackslinger.com/login.php"]http://www.crackslinger.com/login.php[/URL] [URL=http://www.pirate4x4.com/forum/showthread.php?t=313836]Link's to rockwell question's and info...[/URL] [URL="http://www.ouversonengineering.com/"][SIZE="5"]http://www.ouversonengineering.com/[/SIZE][/URL]

06-21-2004, 01:06 PM	#2 (permalink)
big97redtj Registered User Join Date: Apr 2002 Member # 11356 Posts: 644	It might not be what you are after, but we made more of a mobile one using an air chisel and a machined puck welded to a damaged point chisel. It works great for moving floor boards around to gain clearance.

06-21-2004, 01:18 PM	#3 (permalink)
Hickeyjones Registered User Join Date: Oct 2002 Member # 14570 Location: Gray-antsville, Yoo-TAH Posts: 924	Go here

06-21-2004, 04:30 PM	#4 (permalink)
HaWiiLuVeR Registered User Join Date: Jun 2003 Member # 20730 Location: teh oh see - ca Posts: 663	i was noticing last week that eastwood company has a planishing hammer on the back of their latest catalog that uses what looks like a modified air chisel. has a foot control for the air. http://www.eastwoodco.com/shopping/p...ProductID=1562

06-22-2004, 06:54 PM	#8 (permalink)
TB76Bronco Wheeler Join Date: Oct 2001 Member # 7452 Location: Florissant, CO Posts: 237	Seems like a ball valve would work to control the air flow. That should give you a variable rate. You could probably add a spring and a bracket and turn it into a foot pedal.

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