Can anyone recommend a spindle for milling PCB and cast acrylic?

[HankMcSpank]

Hi Jonathan,

My other requirement (should have said) ....buy one that's ready made! (I've little enough free time as it is - without working out how to make one!!)

Anyone want to make one to sell me that will meet my requirements? (btw I realise that traditionally pcb milling is done at very high rpm...but I can forsake that part in exchange for lower noise - I'm getting decent pcm milling results at just 8,000rpm)

Oh yeah, one other requirement - it shouldn't be excessively heavy, it'll likely be going on this very modest CNC machine... http://www.ebay.co.uk/itm/Panther-21...item35b50adae4 (the AC spindle he sells makes a right old DIN - have a listen to the youtube video in that advert - on my word, I'd have an ASBO slapped on me after the first pcb!!)

[Jonathan]

Anyone want to make one to sell me that will meet my requirements? (btw I realise that traditionally pcb milling is done at very high rpm...but I can forsake that part in exchange for lower noise - I'm getting decent pcm milling results at just 8,000rpm)

Yes I'd be more than happy to make you one...I need to make a freind one soon too. The only thing that might be an issue is how soon do you need it?

I will have a look later for a suitable motor. You can get ER11 collet chucks from 8mm and up, so will probably have to use 8mm to get the required rpm unless I rewind the motor.

[John S]

Jonathan,
How quiet are these ? If quiet I'd be interested in one to make the build worth while.

[Jonathan]

Jonathan,
How quiet are these ? If quiet I'd be interested in one to make the build worth while.

Depends how far away you stand :naughty:

I'm not sure really as the only one I have done is the large 6000rpm motor I linked to which is very quiet but then you'd expect that at such a low rpm.
I've got several brushless motors (inrunners) for my model car which do upwards of 60,000rpm and they're fairly noisy but not too bad as there's no fan... so I guess something in between would be fine.
Hmm, that was a very vague answer.

[m_c]

Hmm, that was a very vague answer.

You've obviously got management potential!
Only management can come out with an answer that doesn't answer the question :naughty:

[Jonathan]

You've obviously got management potential!
Only management can come out with an answer that doesn't answer the question :naughty:

And politicians!

[m_c]

And politicians!

Nah. They'd add some bullsh*t in at the same time.