1220 × 2440 build

[routercnc]

Hi Mark,

There are a few machines here, all self built. But they are not as large as you are planning:
http://www.mycncuk.com/threads/10066...s-picture-menu

When the machine is that big (1220x2440) there are many things that come into play:
1. Ensuring the gantry is stiff enough to cope with the span
2. Ballscrews may want to whip at that length - I've not built anything that large but either look at fully tensioned ballscrews, rotating ballnut type, or rack and pinion drive.
3. Costs start to build as things get heavy and better motors are need to drive it
4. Be careful buying motor kits - they may boast Nema34 8Nm etc. motors but they throw in lowly 48V drivers and you would get more performance with Nema23 3Nm believe it or not.
4. Ensuring general alignment and straightness

I know Jazz and others have commented on big machines in the past based on first hand experience so I'm sure they will be here with some better specifics. Also some people settle for 1/2 sheets in the end to make something more manageable.


Another machine here but unclear if it ever went anywhere:
http://www.mycncuk.com/threads/6952-...-area%21/page5