urgent info needed re pneumatic hammers

[tiagocdc]

dear fellow sculptors

my name is tiago carneiro da cunha, i am a sculptor from brazil.
i am looking into buying a pneumatic 'sculpture' hammer (either cuturi or trow&holden, the only 2 makers according to my research), in order to adapt it to my specific modeling needs.

however, before i can decide wether it will suit my purposes, i need an important piece of information, which i was hoping to get from the pneumatic hammer users out here in the forum:

can anyone tell me if these hammers work like the regular 'industrial' ones, ie, does the 'tip' move back and forth freely in a space of approx 1.5cms (3/4 of an inch)?

the ideal for me would be a tool w a very short (shorter than the above mentioned) and very fast back&forth movement, can anyone tell me if these tools will serve that purpose?

thanks in advance for your help
best wishes to all

tiago c cunha

[sculptor]

dear fellow sculptors

my name is tiago carneiro da cunha, ...buying a pneumatic 'sculpture' hammer (either cuturi or trow&holden), in order to adapt it to my specific modeling needs. ...
does the 'tip' move back and forth freely in a space of approx 1.5cms (3/4 of an inch)?

the ideal for me would be a tool w a very short (shorter than the above mentioned) and very fast back&forth movement,...<-- (call this STROKE)
tiago c cunha

First, a bit about decorum:
It is considered impolie to post an identical message in more than one place.

that being said,
as/re air hammers
Both t&h and cuturi make a short stroke high cycle rate air hammers.
The stroke is about 1/8 inch or 3mm for both companies.
the air hammers come with 1/2, 3/4, and 1" diameter pistons(T&H) and 7/16, 5/8, 3/4, and 1" (cuturi)

With the higher cycle rate, the short strokers use a bit more air than the long strokers ------about 4 cfm minimum. The one inch piston uses over 6cfm

For harder stone consider the 1" diameter piston-----for ease of use the smaller ones on a coiled hose are fine.

rod
sculptor (http://sculpture.alturl.com)

[tiagocdc]

dear rod

sorry about the excessive posting: i am new to forums in general, and couldn't make out which was the one where i should post etc... won't happen again.

thanks for the info - very useful. i only have one extra question regarding the 'stroke' of the air hammers: does the tip actually go back AND forth, or, like w some other industrial air hammers, is it constantly being sent forwards w compressed air, and comes back only because of the resistance of the stone?

thanks again for yr help
best
tiago

[sculptor]

... one extra question regarding the 'stroke' of the air hammers: does the tip actually go back AND forth, or, like w some other industrial air hammers, is it constantly being sent forwards w compressed air, and comes back only because of the resistance of the stone?....
best
tiago

hi again Tiago:

Ok---yes the piston continues to cycle all the time it is connected to the air------however; it seems to have much less power than when you ae pressing against the chisel------------by turning the hammer so that the chisel is pointing up, and letting the chisel ride on the piston, it was just a gentle tickle against my gloved palm----then when I pulled the chisel down it banged a lot harder-----and louder and then against a stone it was even louder and seemed faster-------
thanx for getting me to get the thing out-a the drawer and assemble the bits again-----


happy carving
rod'
sculptor (http://sculpture.alturl.com)

ps------I forgot to mention that I also use other air tools for carving including the standard automotive(pistol grip) air hammers, and a pony palm nailer(which is excellent for my skinny 4toothed chisels, and a couple 4point chasers) by switching off, it varies the strain, and offers ease of attacking from different angles(faces)

[ewbrown93]

ive bean carving for a while now and i find for a stone type work the best kind of air hammer to use is Bicknell supply co.they have a throtel so you control you stroke thank ed

[bernie]

hi how can I contact Bicknel????? Where are they locvated? How long have you used it ? Opinion? thanks

[tucker2]

I just bought a new hammer from Trow & Holden. My other hammer was bought at Bicknells. When I was at trow & hoden they told me that they manufacture all the hammers for Bicknell so I do not think that it matters which place you buy it.