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It's lottery and NOT one I'd bet on.

Air return may be just what it says. Just a hose so the air blows out somewhere aside, not in the Z assembly, when change happens. So i think its connected to nothing but a loose hose.

The...

Do you have a link to the spindle in question?

My guess would be some kind of vent line.

They use plastic beads for oil based coolants because there's nothing else you can float on top but if you are using water you could use an oil to prevent evaporation, take your pick!

The only issue would be if the plastic reacts with the coolant, however the worst that's likely to happen is the plastic becomes brittle/discoloured.

Is the evaporation really a problem worth...

Hi Noplace,

You can weld large tubes together although you need to manage the distortion. Large tubes cost proportionately more so budget is the main 'feasibility' limit. Larger tubes are...

http://www.arceurotrade.co.uk/Catalogue/Cutting-Tools/Milling-Cutters/ARC-Premium-Solid-Carbide-End-Mills/2-Flute-Carbide-End-Mill-For-Aluminium-Long-Series-Uncoated

You need to get chips out the hole, and lubrication in.
Without either of those, it's not going to end well in deep holes!

I use lots of air to clear chips and a bit of WD40 now and then to stop the chips sticking to the cutter BTW

Try a single flute cutter, I've had excellent results with 2mm, 1/8" and 6mm single flute cutters in aluminium alloys.

~ hundred kilos so don't worry about that. Though depends on what voltage drive your motors and acceleration desired.

But safely 30 kg should not be a problem
...

As Magicniner has said, these VFDs take single-phase in and produce a 3-phase output that is designed to drive a 3-phase motor. Why can't you just use two of the output connections and drive a...

I mentioned to a colleague that changing belts on my drill press was a bit of a pain and he said some people had used Sturmey Archer bike hub gears instead of the pulleys and can then change to lots...

What stops coolant making it's way through the dust seal on the shaft, through the bearings & into the motor?
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If you want to run a pump attached to the tank you've designed you should use one...

Neil is correct, problem with creat is it can become brittle and brake up/crack, when that happens you end up with "lose" in your tubes and so on.

We used to call it silver sand back in my...

What's in Concrete that doesn't mix well with Steel.?? . . . Neil's suggestion is spot on and yes it's worth it.

I think kiln dried sand (as used for block paving) is the preferred thing to fill with for resonance. That way if you put bungs in you can empty it should you wish to move the machine...

Hope this helps, they are pneumatic air fittings, are availiable all over ebay different threads, tube sizes and options :)


Simon

Simon

If your refereing to HV enable then it's not really very suited to this application because it will Kill power to VFD every time you put Mach in reset. Which will be often. This constant stop...

If you still want to include a contactor to the VFD, then I'm pretty sure that if you hit the e-stop (and turn off the mains power to the VFD) it will not like having the spindle spool down and...

If you really want to connect the VFD through the contactor then just the live would be fine (and not the N or E), but having said that I suppose it depends on the power system to your building as it...

Use a separate Relay and have the VFD fault Signal turn it on when goes active. Run the E-stop signal thru NO contact.

Ok Dean thanks as they say RTFM

Simple Change the Contactor to DC type.




Clive the way the Cslabs units works to keep complete isolation the manual advises using separate power supply for I/O. SO that's probably why.?