RE: [CAD_CAM_EDM_DRO] Re: wooden table for a router

Hi everybody,
I've seen many router's parts from machined massive aluminum plates.
This gave me an idea: There are tables from "pertinax" (intended for
ceramic
fuses montage), or "textolyte" (textile impregnated with something, intended
for
mechanical parts, such as gear wheel).
Does anybody have experience or opinion about this materials?
Peja

-----Original Message-----
From: turbulatordude [mailto:davemucha@...]
Sent: Monday, July 14, 2003 4:24 PM
To: CAD_CAM_EDM_DRO@yahoogroups.com
Subject: [CAD_CAM_EDM_DRO] Re: wooden table for a router


Thanks,

For a desk-top routers, I am sure that wood will work great. my PCB
drilling machine is MDF and does not have any side loads like a
router would have.

I seem to remember Les Watts mentioning his machine has something on
the order of a few thousand pounds of side loading capability. seems
a dull router bit on hardwood would test the strength of many
machines.

I'm thinking that a wooden table of roughly 10 ft by 6 feet would
have potential warping problems with humidity as well as concerns
about rocking from repeated accel and decell of the gantry.

Dave





--- In CAD_CAM_EDM_DRO@yahoogroups.com, Charles Knight <charles@i...>
wrote:

> >
> >
> >I friend was amazed at my CNC stuff and since he is a carpenter,

he

> >asked if I could make him one.
> >
> >I told him that a steel table is $$$ and he asked if anybody uses
> >wood for the tables ?
> >
>
> It's not yet done, but this is my new "hardware store"

machine...it's

> mostly MDF, but built with U channel construction. It's STIFF!

Flex

> will likely not be a problem...and would certainly not be a

problem for

> woodworking. Wood moves with humidity FAR more than the flex

present in

> this machine. (I've made some progress on it, since this photo was
> taken. My router is mounted in a proper Z axis, the drive screws

are

> conected, and the motors are ready for a test run. I've also fully
> supported the rails, for an exponential increase in stiffness.)
>
> http://members.ivwnet.com/~chuck@i.../cncfront.jpg
>
> This machine is a bit overbuilt for its capacity (18x24") but it

should

> be able to handle anything I throw at it.
>
> The table (I assume you mean the work surface itself) is made from
> slatwall, a commercial style display system for retail stores. It

has

> channels cut into it, and will be used with a bolt and a flat

washer as

> an "integrated clamping system." Thanks to some rails beneath the
> table's surface, it's held quite rigidly flat. While I've not

measured

> it, yet, I don't expect any significant variation from practically
> perfectly flat. And, if there is, I can always "grind" it down

with the

> router, itself. Being an MDF product, it has no grain and will not
> warp, except under its own weight, which is properly supported.
>
> There are also many others who have built machines using this basic
> style of construction, who frequent a site called

http://www.cnczone.com

> in the "homebuilt wood routers" section. Lots of good ideas,

there, for

> people on a budget.
>
> The secret is going to be making it sufficiently stiff...not too

hard,

> if you use proper construction. Remember...wood is a reinforced
> composite material, not terribly unlike fiberglass or carbon fiber.
> *Use* it to your advantage! Keeping a 4x8' table stiff may be a
> challenge, but it's definitely an achievable goal.
>
> -- Chuck Knight

Addresses:
FAQ: http://www.ktmarketing.com/faq.html
FILES: http://groups.yahoo.com/group/CAD_CAM_EDM_DRO/files/
Post Messages: CAD_CAM_EDM_DRO@yahoogroups.com

Subscribe: CAD_CAM_EDM_DRO-subscribe@yahoogroups.com
Unsubscribe: CAD_CAM_EDM_DRO-unsubscribe@yahoogroups.com
List owner: CAD_CAM_EDM_DRO-owner@yahoogroups.com, wanliker@...,
timg@...
Moderator: pentam@... indigo_red@... [Moderators]
URL to this group: http://groups.yahoo.com/group/CAD_CAM_EDM_DRO

OFF Topic POSTS: General Machining
If you wish to post on unlimited OT subjects goto:
aol://5863:126/rec.crafts.metalworking or go thru Google.com to reach it if
you have trouble.
http://www.metalworking.com/news_servers.html

http://groups.yahoo.com/group/jobshophomeshop I consider this to be a
sister site to the CCED group, as many of the same members are there, for OT
subjects, that are not allowed on the CCED list.

NOTICE: ALL POSTINGS TO THIS GROUP BECOME PUBLIC DOMAIN BY POSTING THEM.
DON'T POST IF YOU CAN NOT ACCEPT THIS.....NO EXCEPTIONS........
bill
List Mom
List Owner



Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/