Aussie Ghetto 4x4 RnP

[newflavour]

Hey Folks,

I've been on here now for only a short while and have been reading through all of the different builds and am blown away by not only the variety but the accuracy. I'm still at the newbie stage and am designing my build using the ideas many of the others that have gone before me have used.

I really want to use Ahrens linear rail systems, but the only thing is that I can't afford to import his bits just yet and I got a quote for over $700AUD to make them (I put that down to the person not wanting the job).

So for the time being I'm going to be building up a machine that will, in time, allow me to upgrade the rails on the x and y as money permits.

Some general information for those that will want to ask:
- primarily a wood use machine (possibly some 3-4mm light ally work for making chainrings for my track bike)
- 4ft x 4ft cutting area (approximately)
- will use a router, not a spindle
- Rack and Pinion on the X and Y
- Ballscrew on the Z (maybe acme to start and upgrade later)
- mostly bolted steel construction (will be asking a mate to possibly help me weld things together once I've got the general design done)

for now, based on a bolted design, this is what I'm thinking of for the X rail system. I'm wondering if you kind folk could look and provide criticism, keeping in mind the budget and resource constraints that I have.

anywho, thanks for reading.
Mark.

ps: this image is not suppose to be a highly detailed drawing and I've got a lot of extra junk in there. It's more for the purposes of concepting and getting feedback before I go to the effort of modeling every nut and bolt.