I have been assigned the task of designing and building a gunstock
dupllicating machine. My complaining that I just know how to "drill
holes" was ignored. I'm needing some advice on how to achieve linear
motion over 8ft while having the whole thing ridgid enough for the
router that will be doing the cutting.
I'm guessing I have to use polished shafts and somehow will have to
support them all along this 8 ft not just on ends.
Machine has to have a carriage with 8ft travel in x axis and machine
will be about 24 in wide with 10 in of y axis movement. I am on a very
tight budget and that rules out any thing elpensive like thompson
shafts and bearings. Ridgid and Cheap-- thats what I'm after. The
budget is less than $1000 for material. My pay is so little that my
time isn't a concern for the boss.
I've worked at a place building custom machines, and about a dozen
other machine shops and so not without a tiny bit of skill.

This site shows a machine for duplicating wood propellers. Might give you a
few ideas.

http://www.wood-carver.com/gemini.html

"ken" wrote in message
om...
I have been assigned the task of designing and building a gunstock
dupllicating machine. My complaining that I just know how to "drill
holes" was ignored. I'm needing some advice on how to achieve linear
motion over 8ft while having the whole thing ridgid enough for the
router that will be doing the cutting.
I'm guessing I have to use polished shafts and somehow will have to
support them all along this 8 ft not just on ends.
Machine has to have a carriage with 8ft travel in x axis and machine
will be about 24 in wide with 10 in of y axis movement. I am on a very
tight budget and that rules out any thing elpensive like thompson
shafts and bearings. Ridgid and Cheap-- thats what I'm after. The
budget is less than $1000 for material. My pay is so little that my
time isn't a concern for the boss.
I've worked at a place building custom machines, and about a dozen
other machine shops and so not without a tiny bit of skill.

Hey Ken,

Have a look at :

http://www.wood-carver.com/gunstock.html

Take care.

Brian Lawson,
Bothwell, Ontario.
XXXXXXXXXXXXXXXXXXXX
On 22 Jul 2004 06:45:52 -0700, (ken) wrote:

I have been assigned the task of designing and building a gunstock
dupllicating machine. My complaining that I just know how to "drill
holes" was ignored. I'm needing some advice on how to achieve linear
motion over 8ft while having the whole thing ridgid enough for the
router that will be doing the cutting.
I'm guessing I have to use polished shafts and somehow will have to
support them all along this 8 ft not just on ends.
Machine has to have a carriage with 8ft travel in x axis and machine
will be about 24 in wide with 10 in of y axis movement. I am on a very
tight budget and that rules out any thing elpensive like thompson
shafts and bearings. Ridgid and Cheap-- thats what I'm after. The
budget is less than $1000 for material. My pay is so little that my
time isn't a concern for the boss.
I've worked at a place building custom machines, and about a dozen
other machine shops and so not without a tiny bit of skill.

ken wrote:
I have been assigned the task of designing and building a gunstock
dupllicating machine. My complaining that I just know how to "drill
holes" was ignored. I'm needing some advice on how to achieve linear
motion over 8ft while having the whole thing ridgid enough for the
router that will be doing the cutting.
I'm guessing I have to use polished shafts and somehow will have to
support them all along this 8 ft not just on ends.
Machine has to have a carriage with 8ft travel in x axis and machine
will be about 24 in wide with 10 in of y axis movement. I am on a very
tight budget and that rules out any thing elpensive like thompson
shafts and bearings. Ridgid and Cheap-- thats what I'm after. The
budget is less than $1000 for material. My pay is so little that my
time isn't a concern for the boss.
I've worked at a place building custom machines, and about a dozen
other machine shops and so not without a tiny bit of skill.

Why is the machine 8 feet long? To accomodate both stocks END to END?

Why not put them side by side? The linkage from the follower to the
router will be a lot shorter this way, too.

Just a thought.

Jon

This one is easily modifiable to meet your needs and is cheap.
How rigid it is is up to you.
http://www.copycarver.com/index.htm



"ken" wrote in message
om...
I have been assigned the task of designing and building a gunstock
dupllicating machine. My complaining that I just know how to "drill
holes" was ignored. I'm needing some advice on how to achieve linear
motion over 8ft while having the whole thing ridgid enough for the
router that will be doing the cutting.
I'm guessing I have to use polished shafts and somehow will have to
support them all along this 8 ft not just on ends.
Machine has to have a carriage with 8ft travel in x axis and machine
will be about 24 in wide with 10 in of y axis movement. I am on a very
tight budget and that rules out any thing elpensive like thompson
shafts and bearings. Ridgid and Cheap-- thats what I'm after. The
budget is less than $1000 for material. My pay is so little that my
time isn't a concern for the boss.
I've worked at a place building custom machines, and about a dozen
other machine shops and so not without a tiny bit of skill.

Jon Elson wrote:


ken wrote:

I have been assigned the task of designing and building a gunstock
dupllicating machine. My complaining that I just know how to "drill
holes" was ignored. I'm needing some advice on how to achieve linear
motion over 8ft while having the whole thing ridgid enough for the
router that will be doing the cutting.
I'm guessing I have to use polished shafts and somehow will have to
support them all along this 8 ft not just on ends.
Machine has to have a carriage with 8ft travel in x axis and machine
will be about 24 in wide with 10 in of y axis movement. I am on a very

You *might* be able to find a metal lathe that
long for scrapmetal prices. Getting it home
might break the budget unless the boss has a
cheap truck and rigging.


tight budget and that rules out any thing elpensive like thompson
shafts and bearings. Ridgid and Cheap-- thats what I'm after. The
budget is less than $1000 for material. My pay is so little that my
time isn't a concern for the boss.

That's unfortunate. I hope you pull this off
and convince him you're worth more.

I've worked at a place building custom machines, and about a dozen
other machine shops and so not without a tiny bit of skill.


Why is the machine 8 feet long? To accomodate both stocks END to END?

Why not put them side by side? The linkage from the follower to the
router will be a lot shorter this way, too.

Just a thought.

Jon

"Chief McGee" wrote in message news:oNPLc.161224$Oq2.97622@attbi_s52...
This site shows a machine for duplicating wood propellers. Might give you a
few ideas.

http://www.wood-carver.com/gemini.html

Looks very similar to several gunstock duplicators I've seem pictures
of. Seems hard to believe its as ridgid as they claim. Maybe its my
tendancy to over engineer

"ken" wrote in message
om...
I have been assigned the task of designing and building a gunstock
dupllicating machine. My complaining that I just know how to "drill
holes" was ignored. I'm needing some advice on how to achieve linear
motion over 8ft while having the whole thing ridgid enough for the
router that will be doing the cutting.
I'm guessing I have to use polished shafts and somehow will have to
support them all along this 8 ft not just on ends.
Machine has to have a carriage with 8ft travel in x axis and machine
will be about 24 in wide with 10 in of y axis movement. I am on a very
tight budget and that rules out any thing elpensive like thompson
shafts and bearings. Ridgid and Cheap-- thats what I'm after. The
budget is less than $1000 for material. My pay is so little that my
time isn't a concern for the boss.
I've worked at a place building custom machines, and about a dozen
other machine shops and so not without a tiny bit of skill.

Here you see a "wood-copy-router/carver" that is rigged for
gunstock copying :
http://www.wood-carver.com/gunstock.html


A.P , Norway