Re: Extrusions for router rails (store front)

Mel,
I met John at a garage sale a few weeks back. I saw the PCBMill
and the prototype of the Pipe Dream. He had the machines outside on
the driveway. We cut keychain watch cases out of Plexi and we
milled some circuit boards. He makes all his parts by hand. Oh
Yea! I got to see the monkey organ that is made using the insides
of a harmonica. He also has a FAX machine that uses floppy drive
stepping motors. The machine along with a shortwave radio picks up
weather maps from around the world. He is extremly funny and so are
his friends that were hanging there. Now that was a great day!

Bob


--- In CAD_CAM_EDM_DRO@y..., Mel Williams <melvin.williams@v...>
wrote:

> I am in process on the PCB mill from John Kleinbauer on the web

page below.

> I found the plans well thought out. I have 99% of the plastic cut

out. Now

> I need to start
> drilling the holes and changing some of the dimensions to fit the

Aluminum

> channel that I have. I like the on a shoe string approach that John
> Kleinbauer takes. It makes finding part
> easy. The plans even include a stepper controller made from common

parts.

> Mel
>
> -----Original Message-----
> From: cncdxf@a... [SMTP:cncdxf@a...]
> Sent: Wednesday, October 31, 2001 9:16 AM
> To: CAD_CAM_EDM_DRO@y...
> Subject: [CAD_CAM_EDM_DRO] Re: Extrusions for router rails

(store front)

>
> Hi,
> You might want to try Store Front Aluminum channel carried
> by you local glass company. You can form all kinds of shapes
> using the associated hardware. John Kleinbauer uses it to
> build his milling machines. see link
>
> www.kleinbauer.com/
>
> Bob
>
>
> --- In CAD_CAM_EDM_DRO@y..., vrsculptor@h... wrote:
> > Some help please. I was considering building a large 4X8 foot 3
> axis
> > router for architectural type stuff (doors, windows, furniture..)
> in
> > wood. Absolute accuracy is not important. .010/.030 is fine
> although
> > repeatability must be high. In other words it doesn't matter much
> how
> > big it is as long as the cuts line up. With this in mind I have

the

> > following questions:
> >
> > 1. Are heavy square/rectangular aluminum extrusions straight and
> > accurate enough to use as rails without additional machining?
> > 2. Have any of you seen/tried filling a tubular way with an epoxy
> > motor or some such to increase rigidity? Did it work?
> > 3. Assuming aluminum rails which do you think would be better:
> > plastic (turcite/teflon) lined sliding ways or rollers?
> > 4. Gates is selling heavy cog belting by the foot as an

alternative

> > to rack and pinion gearing. Any opinions on this? Have any of you
> > seen this in use? If it works it's got to be the lowest cost
> > alternative.
> >
> > Thanks.
>
>
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