Quick question regarding spindle direction

[ravihotwok]

Morning everyone,

I have a quick question, what is the normal direction for a mini cnc spindle? I have a modified Chinese 3040 cnc machine using the planet cnc control box with a uprated ebay spesh spindle (300w i think)

My question is which way should it rotate as i have looked at my engraving v bits (3mm) and they appear to have an edge to them which would hit the object to be engraved first if it spun clockwise, but currently my spindle spins anti-clockwise.

Is this normal?

Sorry if this is a bit of a dumb question

Cheers

[phill05]

Morning everyone,

v bits (3mm) and they appear to have an edge to them which would hit the object to be engraved first if it spun clockwise, but currently my spindle spins anti-clockwise.

Is this normal?

Sorry if this is a bit of a dumb question

Cheers

Image of cutter would help

[Neale]

Usual direction is clockwise, looking from above. Most cutters are made for this direction of rotation; left-hand cutters are made but much less common. In fact, I've never handled one, although I do have some left-hand drills.

Sounds like spindle is wired backwards!

[ravihotwok]

Usual direction is clockwise, looking from above. Most cutters are made for this direction of rotation; left-hand cutters are made but much less common. In fact, I've never handled one, although I do have some left-hand drills.

Sounds like spindle is wired backwards!

thats exactly what im thinking, is it possible the polarity is wrong? ie the red and black feed wires need swopping round?

[Neale]

Sounds like it, but could do with a bit more info and pictures before being definite about it. Do you have a test meter to check the polarity of the power supply or controller the spindle is connected to?