Re: My dream!

Thanks to all for advice and links.

I'm handy with woodwork (just finishing a 14ft pocket yacht!) so
I'll go for a plywood+epoxy frame because I have lots of offcuts.

I can buy silver steel (tool steel) offcuts for a beer money bribe
at local steel supplier - I'll get some 20mm (3/4in) and 12mm
(1/2in) and secure to a 2x2 frame + ply baseboard.

8 roller blade bearings - £10, screwed to 2x2 for linear X bearing

Stainless allthread - I have 12mm x 1m, another 2 will be £7 from
www.screwfix.com

Zero backlash nut - 2 stainless nuts clamped either side of 9mm ply
tighten one and seal both with epoxy. Zero cost. Got that tip from a
home made CNC pic at cnczone.

Steppers - 110oz 5v reclaimed are £19 each = £57 from
www.distel.co.uk

Controller board - £55 on ebay + postage

I will build a Y-Z carriage to slide on the linear bearings in
ply/epoxy. It should be dimensionally stable.

I have a small 600 watt router with 43mm mounting

Not sure about Y-Z bearings, probably roller bearings again.

Software - I work for a CAD/CAM company!

So far that adds up to £150/$255 - need a beer now for more planning!

What have I missed apart from a few weekends of work?

-Paul

--- In CAD_CAM_EDM_DRO@yahoogroups.com, "Mike Hammel" <mycamel@c...>
wrote:

> Paul,
>
> I built my own. 54" x 34" x 8" router. Looked at HobbyCNC photos

on their

> website, ordered their driverboard and 125 oz stepper kit and

started

> designing. Took about 3 weeks to get the design right and about a

week to

> build it. I have since modified it to improve speed and accuracy.
>
> The most important part of designing a router is to get all of the

hardware

> first and design to machine around them. Don't design the router

and then

> try to find parts to fit it. Ebay is a great way to find parts

cheap. I

> built my machine for about 15% of the cost of a commercial unit

and have

> great speed and good rigidity.
>
> Oh yeah, it was a lot of fun to build also!
>
> Mike Hammel
> www.fancyfoam.com
> 1704 Bullard
> Arkansas City, KS
> 67005
> ----- Original Message -----
> From: "Paul" <paul3507@b...>
> To: <CAD_CAM_EDM_DRO@yahoogroups.com>
> Sent: Saturday, June 26, 2004 7:18 AM
> Subject: [CAD_CAM_EDM_DRO] My dream!
>
>
> > My hobby is woodworking and I'd like to build a CNC router that

can

> > cut wood and plastic (pcbs).
> >
> > Requirements:
> > Cutting area half sheet or 1m x 1m
> > Simple construction
> > Accuracy 1mm in 1 meter
> >
> > Design.
> > Stepper motors driving "allthread" stainless threaded rod.
> > Material stationary, tool moves in x+y+z
> > Tool moves on a sliding carriage like commercial CNC routers
> >
> > Are there any wood CNC router designs out there? Feedback and

ideas

> > welcome.
> >
> > -Paul
> >
> >
> >
> > 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@a...,

> timg@k...
> > Moderator: pentam@c... indigo_red@q... davemucha@j...
> [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
> >
> >
> > Yahoo! Groups Links
> >
> >
> >
> >
> >
> >