Shannon Tolliver published a new build:

Read more about this build...

 

Will do anything particular you want to see sharmstr?

 

Here you go.

 

Thanks I'm happy how it turned out considering I made all the aluminum plates manually with drill press and my woodworking saws. There is a few things I'd change if doing it again but mostly minor to make things easier to align and assemble.

 

So far I think one rail with 2 of the bigger blocks per side is solid. I've tried to see if I could get the Z to have flex and I can't notice any with hand force. So far I've only cut 1/2 acrylic and plywood and the machine has done well. With the acrylic it took 4mm deep passes with a 2 flute 1/4 up cut bit at full speed (a bit of an accident) without issues. I do plan to cut aluminum in the future but that will be in a few months once I get used to the machine and finish getting everything organized in my barn. I want to redo my corner plates in 1/2 inch aluminum and the gantry plates so that I can get my router further back on the Y axis.

 

I'm using 15 on x axis. 20 on Y. 12 on x. I think they all work well for the intended purpose. No problem glad I can help.

 

@JustinTime I have my max set at 2500mm but I believe its in minutes. However I don't feel like the machine can actually achieve it with 1616 ball screws. The reason I say this is that when I ran a part at 1000mm/min it didn't seem to be much slower that jogging the machine. My Z is 1605 ball screw and moves much faster. Some day I'll do the math or measure because I am curious what my max is.

 

What is the pitch of your ball screw? If your using a 16mm diameter 5 mm pitch ball screw over such a long distance I can see having issues with whip because of higher speed. I'm using a 16mm pitch which runs slower and I haven't noticed whip.

 

I should probably clarify my statement a bit. The 16mm pitch screw requires less revolutions to move the same distance as 5mm, therefore less RPM are required to achieve the given speed.