AndyUK's Build - 1.2x1.0m Gantry

[JAZZCNC]

Thanks Dean - I used Aspire's default step over, so no idea what it was set to! I'll look into it tonight and get it into that range.

Out of interest, what would you expect to see DOC wise on a router like this with a 4mm single flute? APT suggests slowing down from those parameters once you're over 1.5 D, but I assume that advice is really for mills; 6mm felt like quite a big chunk to be taking.

Ye aspire is mostly based on wood which is a little less forgiving so any small scollops can be sanded away but in Ali you want a smaller stepover for the best finish.

Difficult to say because every machine is different, spindle power and rigidity plays a big part. If it was me I'd start at 50% D and feel your way down. Or just go for it turn the spindle up to full RPM so you are getting Max torque then go with 1.5xD and play with feeds n speeds.