Which vacuum cleaner (Karcher MV2?)

[d4cnc]

I was just about to post if something like your second link would be more like what I'd need Draper 10923 but the reviews state, as you have, that they're extremely noisy.
So a Henry is the way to go? Do you keep it on your cnc machine for hours at a time? The one you linked is a 580W whereas the noisy one linked is double that. Is that not an issue in reality?

EDIT: Ah there's also a Henry with 2 switchable speeds.. 1200W & 600W. Is that the one you use and recommend?

[routercnc]

QUOTE[I was just about to post if something like your second link would be more like what I'd need Draper 10923 but the reviews state, as you have, that they're extremely noisy.
So a Henry is the way to go? Do you keep it on your cnc machine for hours at a time? The one you linked is a 580W whereas the noisy one linked is double that. Is that not an issue in reality?

EDIT: Ah there's also a Henry with 2 switchable speeds.. 1200W & 600W. Is that the one you use and recommend?]

OK, managed to check the spec of my Henry and it is 580W non-switchable. But suction is not a problem. Be careful of just looking at wattage to determine how well it might work as this is just electrical input - I do know that the motor type is different to the cheap can type, and it certainly is much quieter.

I have run it for extended periods (at least an hour) following the cutter around, and didn't notice heat etc. but now that my dust shoe is finished and working I use a proper extractor. I then use the Henry to generally tidy up. Must post a video / pics on that when I have a moment.

I haven't used the 1200/600 version so can't comment but I'd be fine recommending the 580W version. When I was looking at all this ages ago there was some ruling coming in about maximum power allowed in future vacuum cleaner models (to save energy) so this could be something to do with the 580W version - but please check this before deciding.

[d4cnc]

I wonder also if I can't improve the chip removal a lot, by using 2 nozzles blowing air. Therefore I could get away with a less powerful air pump? That coupled with the dust hood and vacuum sucking air.. do you think this setup could give a good enough chip removal on aluminium?


What I'm not understanding is the power of the pump I'll need and if I need a tank system or not. And how big a tank. Is it a case of trial & error or are there some rules of thumb/formulas I can plan in advance?
I can just about fit everything in if I use the Wickes vac (assuming it has the same dimesnions as its dearer model. and the 6l tank shown above..


(the two nozzle system I see working well here..


PS. the hood system I'm thinking or this one

[cropwell]

I can just about fit everything in if I use the Wickes vac (assuming it has the same dimesnions as its dearer model. and the 6l tank shown above..

The Wickes 1250W vac sits in a 32x32cm square 43cm high if you do not have the castors and handle fitted.

[d4cnc]

Great thanks for measuring that for me. 32cm x 32cm could work. It all just about fits in the space I have alongside this 24 litre air compressor.

I think I may go with this setup then. I don't think I can really get anything bigger..

I believe that 24l one is similar to your lidl one? Does it perform well enough to remove chips do you think? How long does it work for when on constantly?

[cropwell]

JTF is cheap WTF ! <£50. That compressor should blast the chips right out of the frying pan ! I am never happy about running that type of compressor continuously. Maybe if you cut the airflow down enough to remove the swarf, but keep it as low as possible, so the compressor isn't working flat out, could work OK without burning out the motor.

My little (A4) machine is a lot less industrial, the ACO388D pump blows directly on the work from as little distance as possible as I have a nozzle fixed to the spindle mount. The air feed tube is 8mm i.d. smooth walled to keep the air flow resistance down. It keeps the chips off the cutter and I use the blower gun on the airbrush compressor to blast it occaisionally.


I plan to use a solenoid valve to pulse air when I do the steel welded machine.

[d4cnc]

Haha, cheap to the point of .. 'where's the catch'.
Apparently it's very much a 'buy cheap rubbish from China and sell in a warehouse' type set up there.. so not sure I'd trust it to perform great.. but it should give me a good idea of what I need when I buy its replacement unit! - worst case scenario. Or best case scenario, it works great and for a long time!


I guess if it fails before 6 months, I can always get a refund, assuming I'm not misusing it.


Yes your system with hose seems exactly what I want to do. As you say, keeping it as close to the cutter I think is the key. Maybe even two if I have space..


Awesome. So that's a plan then! I've been stalling on building the table until I had a plan of sorts.. so will now start it I think. Off to the timber yard...!

[cropwell]

QUOTE[ When I was looking at all this ages ago there was some ruling coming in about maximum power allowed in future vacuum cleaner models (to save energy) so this could be something to do with the 580W version - but please check this before deciding.

The EU ruling that came into effect in August 2014 limited the power to 1600W. There is a proposal to limit noise output to 80db by 2017. That would really f**k up a lot of manufacturers !