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Wanted to say hi to all, and specially to those who've helped me in past, such as Dan Mauch. Hi Dan. Hi the rest of yous CNC guys from RCM. Also special thanks to Bill for "janitoring" the group (that's a term of respect on some other groups I've been part of, so take it as a compliment B).

My ongoing projects:

CNC'd Sherline's (the usual lathe and mill stuff)

4' X 8' X 24"+ CNC bed router for alum/urethane foam contour routing for eXperimental aircraft and automotive stuff. Guides built around surplus Thomson shafting, bearing, and ball-screws.

Both powered by Dan's small and large motor-controllers, respectively, along with the usual AHHA Artisan & PC interface, etc. All the step-motors for both of the above I also got from Dan. Am I a Mauch mooch or what? Heh.

Love to learn about and eventually get into CNC'd hot-wire styro cutters, small-scale EDM, and FINALLY discover with the group some encoders that would make nice inexpensive (<$100/axis) linear DRO's feasible. Dang, why doesn't HP make some of their linears with the right resolution! Their rotary's are perfecto. Grumble.

Anyhoo, look forward to seeing this grow. Anyone else keen on largish gantry-style routers?

Gar Willis
Merced, CA

In a message dated 99-05-07 23:12:52 EDT, you write:

<<
Anyhoo, look forward to seeing this grow. Anyone else keen on largish
gantry-style routers?
>>

I'm currently constructing a 48" x 96" x 24" gantry style router. I have a
smaller CNC router that I built a while back and am running with some
steppers salvaged from an old HP plotter and a large Toshiba printer, the
machine looks rather like a MaxNC mini mill with a Porter Cable laminate
trimmer as the cutting head.

My controller board is from Dan & co ... one of their 2 amp 3 axis boards..
Gonna get one of the 5 amp boards for my big table soon. I've found that
Bishop Wisecarver makes the least expensive quality linear motion components.

Jonathan Croad
jonty50@...

On 8 May 1999 03:12:19 -0000, garfield@... wrote:

Wanted to say hi to all,

Oooooh, golly, my apologies for the lack of wordwrap on my "intro". I'll
be posting from me faithful 'Agent' from now on, so I trust I'll be a
tad less 'long-lined' from now on. B)

Cheers,
Gar

In a message dated 5/8/99 12:00:47 PM Pacific Daylight Time, Jonty50@...
writes:

I'm currently constructing a 48" x 96" x 24" gantry style router. I have a
smaller CNC router that I built a while back and am running with some
steppers salvaged from an old HP plotter and a large Toshiba printer, the
machine looks rather like a MaxNC mini mill with a Porter Cable laminate
trimmer as the cutting head.

Tell us more, this is the stuff we want.
Bill

On Sat, 8 May 1999 14:59:59 EDT, Jonty50@... wrote:

I'm currently constructing a 48" x 96" x 24" gantry style router.

Neat, we should compare notes; BTW, I musta been dreamin when I posted
the bed dimensions on mine. It's 4' X 4' X 2' for me, NOT the enormous
8' Y that Jon is working toward. I just never even HOPED to have room
for such a monster, let alone find the parts necessary for it. But I
musta harbored Freudian desires for same, given my misstyping. B) So my
intro shoulda read 4' X 4' X 24".

My controller board is from Dan & co ... one of their 2 amp 3 axis boards..
Gonna get one of the 5 amp boards for my big table soon.

Using same on both counts, also.

I've found that Bishop Wisecarver makes the least expensive quality
linear motion components.

I like their "V" stuff, but never went for pricing. Give us an example
of "least expensive quality" if can think of a simple one, eh? Tanx.

Gar

In a message dated 99-05-09 02:13:59 EDT, you write:

<< On Sat, 8 May 1999 14:59:59 EDT, Jonty50@... wrote:

I'm currently constructing a 48" x 96" x 24" gantry style router.

>>
Neat, we should compare notes; BTW, I musta been dreamin when I posted
the bed dimensions on mine. It's 4' X 4' X 2' for me, NOT the enormous
8' Y that Jon is working toward. I just never even HOPED to have room
for such a monster, let alone find the parts necessary for it. But I
musta harbored Freudian desires for same, given my misstyping. B) So my
intro shoulda read 4' X 4' X 24".
<<

Yeah, the thing is outtahand. It takes up way too much space in the two car
garage that I have for a shop. I'm using a 6" x 6" x 1/4" wall rectangular
steel tube 6' long as the gantry. The gantry rides on two 2" x 4" x 1/4" wall
rectangular 6061-T6511 aluminum tubes that are 10' long each. The framework
that holds it all together is made from 4" x 4" x 1/4" square steel tube that
I salvaged from a dumpster. My NEMA 34 step motors are also salvaged from a
couple of mainframe printers.

The parts aren't really such a problem. The Bishop Wisecarver V wheels, wheel
mountings and track were around $600 for the lot. I have a little over $1000
in it with around another $600 to spend on the driver board and miscellaneous
items. Add in a bit more for a "fudge factor" and I figure an all up price of
around $2000 - $2500 all told. Not bad for such a heavy duty machine.

>I've found that Bishop Wisecarver makes the least expensive quality
>linear motion components.

I like their "V" stuff, but never went for pricing. Give us an example
of "least expensive quality" if can think of a simple one, eh? Tanx.
<<

The V bearings run around $20 each, it basically takes 4 per axis. I've found
that the B-W track is not necessary, the wheels do very nicely riding on 1/4"
diameter hardened steel rod ( I use music wire) that can be just pressed into
a 1/8" deep slot milled in an aluminum bar or rectangular tube. Very smooth
motion, even smoother than the B-W track.

Jonathan

jonty50@...