1.7*0.74*0.4m Mill / Router building...

[Jonathan]

looking good jonathan (the router that is, you need a hair cut :)

:rofl: thanks

hows it getting on with thet much Z ?
have you made a provision to drop the whole gantry down for your smaller /finer jobs ?
it is a good feeling when the thing springs into life :)

It seems fine. There's a bit of wobble visible on the latest part (see below), but I think other factors are contributing such as the whole router wobbling madly due to the floor not being strong enough...

I have measured the Z deflection parallel to X. I can bend the Z axis by about 0.06mm if I push as hard as I can with little finger, so a reasonable force but not huge. It takes a lot of force to bend it more than that which makes me think it's the linear bearings that are a bit sloppy. Not much I can do about that.

I've not made it so I can lower the gantry, it's far to heavy to be doing that sort of thing. I think I'll make a raised bed and machine aluminium stuff on that. It's a compromise, but the gantry sides are very strong.

Yes one X motor is much stiffer than the other. It's limiting my feedrate...

Anyway, at last here's a video of it running:



(I'll post the first test video tomorrow when I've edited it)