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ravihotwok
23-10-2019, 07:58 AM
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
23-10-2019, 08:06 AM
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
23-10-2019, 11:13 AM
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
23-10-2019, 11:38 AM
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
23-10-2019, 12:12 PM
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?