In case we are not talking about the same model, the one I got is the
Nilfisk Aero 26-21 PC.
If you've used it attached to a power tool does it clear sawdust and
wood chips well enough?
I would say that this one's suction is slightly better than but very
close to my 650W domestic vac. I guess I expected more in a workshop
Well enough as far as I am concerned.
1. If you are using the rubber nozzle for power tool attachment that
comes with the kit check that the bypass port on the side is closed
(twist the plastic ring.
1a (there is a similar slider to the same effect on the normal hose end.)
2. If you have been using it to pick up bits of rubble or wallpaper,
check that the hose is not blocked. Try putting the hose on the blow
port to see what comes out.
Understood. Yes, I saw the plastic slider on the normal hose end. It was
such a poor cover that I taped the holes up.
In fairness, I think it's the hose which is the main let down - at least
on blow. Placing a hand directly over the ports on the machine shows it
is more effective, though still not as powerful as I expected.
I haven't sucked anything up with it yet as I see Screwfix let customers
return unused items. I just tried the blow function and, on suction,
compared the hose suction with my domestic vac.
This is one of those occasions where the only way to get the kind of
thing you want is to make it yourself. This vac is a bit too domestic
for my liking. But making a 'decent' machine would take time.
Or, buying a more industrial unit second hand might do. But I found none
On the other hand the Nikfisk does tick all the boxes. It's not as
powerful as I would like but it is the best I've seen. Unless I find a
better solution soon I'll probably end up just keeping the Nilfisk.
It comes with a long hose (3.5m) which may offer too much resistance to
the airflow. There is a shorter hose (2m) available which if you do not
need the max length may be better.
I got a shorter hose from Radford Vac Centre
<(Amazon.com product link shortened)>
I got feed up with cheap vacs and bought a bosch gas25.
Works really well and is rated to run continuously.
Not cheap but virtually no dust even when sanding walls.
It has a semi auto filter cleaner so you can stop every 20 mins or so
and hit clean to get full suction back even with plaster dust.
I use a hosepipe and wash it out. (Don't use a pressure washer!)
This also moistens the remaining mortar, which helps to stop
it sucking out the water from the new mortar before it sets.
Don't repoint immediately after washing out - let the water
all drain away and dry out a little, but not completely.
Lime mortar in your eyes - ouch!
Sounds like my Hoover Constellation. The hose can be plugged
onto the bottom to blow (really meant for clearing blockages
from the hose).
I use a master/slave socket (the type used for computer and
accessories which switches off monitor/printer etc when computer
is switched off. The vacuum cleaner is connected as a slave.
If it's not going to be portable, I would suggest fitting a
cyclone inline before the vacuum cleaner. It will trap most
of the dirt, reducing the need for frequent emptying, as it
can be made much bigger than the vacuum cleaner's dust capacity,
and it traps the dust outside the airflow so that the dust trapped
in it doesn't reduce suction and efficiency (unlike dust trapped
in a filter).
[email address is not usable -- followup in the newsgroup]
Unfortunately, the mortar internals (if that's the right term) are in a
terrible state and there seem to be big gaps behind the front mortar. In
many places, where the front mortar has been scraped away it turns out
there is just a void behind it. So a hose would just throw a load of
water into the gap. Hence the need to use a vacuum to suck the cement
dust away or, if that doesn't work, to blow it clear.
I've already been fairly well sand blasted while using an angle grinder
to clear out the old mortar!
If that a spherical vac which basically hovered then it may have been
the same type!
That sounds like a good idea. I can see lots of homemade cyclones and
small purchasable ones. Do you have a link to something you would
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