Quote Originally Posted by GrahamWhite View Post
The machine itself is called a hybrid and I will be adding the upgrade of rack and pinion instead of ball screws.
R&P isn't an upgrade to ball screws it's very much going backward.!

However it is little easier on longer machine provided it's done correctly.

Now regards the machine then to be fair unless you got Plywood cheap then could have built a frame made of steel for about same or not much more. Obviously you'd need to be able to weld but steel isn't that expensive.

Also if your thinking to use the V bearing and Angle style setup for linear rails then please let me urge you to save up and buy some proper linear rails, even the round type if you must.
All your doing with V bearings is building trouble and wasting money because they will stick, wear and be inaccurate. You'll be for ever chasing issues.

Often people think they'll start off and upgrade as they go along just like your thinking but the reality is that rarely happens and even when it does still lacks in many ways because can't make silk purse out of sows ear.!
Also the costs of intial build plus any failures plus upgrades will work out more than doing it correctly first time.

You don't seem to far down the line with only base made so I'd urge you to maybe stand back and take look at what can be done in steel.
I know 100% you won't regret it if you did. Also know you will regret building joe's machine at some point.

Sorry to be negative but it's in your interest we say it.!