Cordless corded tools?

[John Doe]

I just converted a Dremel 10.8 V rotary tool to use Bosch 10.8 V
batteries. I always have the rotary tool immediately in front of
me, so the battery will either be worn on a neck strap or be set
down near the work. The wires coming from the rotary tool plug
into the battery, using a socket taken from another Bosch tool.

That was done because the rotary tool battery charger sucks.
Apparently the charger destroyed one of my two battery packs.
Also, I have lots of Bosch 10.8 V MAX batteries.

Preliminarily speaking, having the battery connected through a
wire to the tool is working great. It's a cutoff tool, so maybe
the fact that it is ultra light without an integrated battery is
the reason. Or maybe it's just infatuation, wouldn't be the first
time. The battery pack can be worn around my neck, hung from a
utility belt, or set on a table (the way I'm doing it now).

I suppose eventually battery technology will be light enough that
we will reach the point of diminishing returns for lightness, but
that hasn't happened yet.

 

[[email protected]]

In the past I have converted a number of 12v cordless tools into a
corded version where the battery is carried on the belt.

You can also set them up to run from a vehicle battery via cord.

Removing the battery pack lightens the tool and many times improves
the balance.

I also have converted a number of 24v cordless tools to belt
packs...making them easily used above one's head for hours at a time.

TMT

7.2 volt drills, run on 12 volts, work great for drilling nominal
1/8" holes for rivets in aluminum. Several friends have built entire
Zenith (zenair) 701 planes with them.

 

[John Doe]

removing the batteries doesn't always improve tool balance

Removing the battery pack and (instead) connecting it through a
short wire improves the balance of my rotary tool.

They could probably make an extremely compact and lightweight
lithium-ion battery powered rotary tool that would function better
than a flexshaft, that way.

 

[Art Todesco]

Removing the battery pack and (instead) connecting it through a
short wire improves the balance of my rotary tool.

They could probably make an extremely compact and lightweight
lithium-ion battery powered rotary tool that would function better
than a flexshaft, that way.

I too, have a rotary tool always next to me, actually 3. Dremel does
make a Li-Ion battery model ... that's my #3 unit. Actually, it is
usually my number one go to unit. Its battery and charger seems to be
ok. I only have 1 battery and have had it for many years. It's
probably close to needing replacement. This battery unit does, however,
lack the power a regular AC Dremel possesses. Maybe a new battery would
improve it. The 2 other units I have, which are always on the bench,
is a variable speed AC dremel and a Ryobi. When Dremel built this AC
model, they built pure junk. This model has the variable speed slide
lever. The tool itself is our of balance so that at high speeds it
vibrates. It vibrate so bad that the speed lever will move on its own.
However, I still use it. The Ryobi speed is only 20K max, but has
much more torque than the other 2.

 

[John Doe]

I too, have a rotary tool always next to me, actually 3. Dremel
does make a Li-Ion battery model ... that's my #3 unit.
Actually, it is usually my number one go to unit. Its battery
and charger seems to be ok. I only have 1 battery and have had
it for many years. It's probably close to needing replacement.
This battery unit does, however, lack the power a regular AC
Dremel possesses. Maybe a new battery would improve it.

If you have other 10.8 V battery tools (like Bosch 12 V MAX), and
a socket that can be taken from the same type of tool, you can
convert your rotary tool into an ultra light weight cutoff tool.
And likely you will be improving the battery performance at the
same time. I took the connector/socket out of a Bosch 12 V MAX
flashlight, connected a 2 foot wire to it, and soldered the wires
into the rotary tool. I'm going to buy some cheap connectors in
addition to that, so that I can use the same (expensive)
tool/battery connector to connect the same type battery to another
device. For example... For using the bright end of the hacked
Bosch flashlight on my skating helmet.

Might be a good time to move away from the cheap charger that
comes with 8000 series Dremel tools. The only difficulty is
finding a spare connector for the battery.

 

[[email protected]]

True..in some cases I have left the batteries in the pack for balance
but many times you can remove the pack completely.

In one 12v drill I have it setup to do battery or cord ...best of both
worlds.

TMT

If removing the battery hurts the ballance, fill the battery area
with Bondo - and lead shot if required.

 

[John Doe]

clare snyder.on.ca wrote:

Like they did with TMT's head?

You are a waste of space.
--

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Subject: Re: Cordless corded tools?
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[John Doe]

ROFLMAO!!!! Indeed! Oh yes indeedy!!

And speaking of a waste of space...

Too bad you cannot at least keep your garbage in all of your
off-topic threads, instead of letting it seep into everything
around you.
--

 

[legg]

On Mon, 21 Nov 2011 16:28:52 -0800 (PST), Too_Many_Tools

7.2 volt drills, run on 12 volts, work great for drilling nominal
1/8" holes for rivets in aluminum. Several friends have built entire
Zenith (zenair) 701 planes with them.

You might want to consider adding snubbers or clamps to the switch and
harness, at the motor. The harness may also radiate.

RL

 

[[email protected]]

You might want to consider adding snubbers or clamps to the switch and
harness, at the motor. The harness may also radiate.

RL

RADIATE? If you are worried about AM radio interference throw a
ferrite torroid on the cord at the rool end. If your worried about
something else, don't be - because it is NOT a problem.

 

[legg]

RADIATE? If you are worried about AM radio interference throw a
ferrite torroid on the cord at the rool end. If your worried about
something else, don't be - because it is NOT a problem.

That would depend on the control circuitry and motor combination used
by the tool, and the voltage of the substitute battery used. There can
be considerable di/dt, normally handled by the local battery's
placement. Stick the battery at the end of a cable, you'll get more
than just DC cable losses - there will be voltage spikes at the load,
voltage ripple on the controller supply, and rdiation from the
interconnection.

I'm not worried. It's not my tool, but you don't paint just one side
of a fence.

It IS becoming increasingly difficult to get clean and stable FM
broadcast reception - never mind AM - particularly from smaller or
distant stations.

I expect there are similar problems over the rest of the spectrum -
with effects not so easily identifiable by the victim. The perpetrator
is, inevitably, ignorant of them.

RL

 

[[email protected]]

Actually this brings up a good point...do manufacturers of cordless
tools worry about RF interference?

TMT

12 to 24 volt battery operated tools do not "broadcast" very far -
either from the brushes or the PWM controllers.

Cheap Chinese line operated power tools are another story altogether.