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Forum Newbie
Group: Forum Members
Last Login: 9/28/2008 5:29:29 PM
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[font=Comic Sans MS][size=4]Well i have had mine since they first came out i had an old corded rotary tool that has had many years of service but is starting to show it's age and decided time for a new one and why not a cordless tool for versatility i build lots of RC airplanes and i really put these tool through there phases of operation and functionality.
This one i have had since November 2007 i think and now it wont hold a charge as far as i can tell the green light lites it will run but any little bit of load on the tool and it shuts down. and the charge will only last a few minutes then it is completely dead so much for lithium ion technology. I plan to send it back to customer service i was thinking. but i don't have my documentation anymore on the tool hopefully that wont be a problem if it cost as much to repair as buying a new one then i guess i'll let them keep it and get a new one would be nice if i could just replace the batteries in it considering that is probably what is wrong. I don think leaving it on the charger all the time is good for it and may be why the batteries have taken a dump. But overall it has been a great tool and helped me build many planes. but i think that they should have an upgrade to make it were the batteries can be changed like packs on drills are. sending it back for dead batteries after there worn out every time is not very productive. has anyone changed the batteries in there's them selves?? [/size][/font]
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Forum Newbie
Group: Forum Members
Last Login: 10/9/2008 3:27:21 AM
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| I have had pretty much exactly the same problem with my Stylus. I've had it for just over a year and it's been absolutely brilliant BUT now when I put it on the charger base after using it for a couple of hours, the green light comes on, stays on for a few seconds (under a minute) and then goes off. If I take it off the stand and put it back on, the light comes on again for a few seconds and then goes off. Is this a common fault? Does anyone form Dremel Customer support read these messages?
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Supreme Being
Group: Forum Members
Last Login: Today @ 6:29:49 PM
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Both the tools are still under warranty, here is the number for customer service
Phone:
1-800-437-3635 (Toll Free)
1-262-554-1390
(7AM to 6PM CT Mon to Fri)
Fax: 1-262-554-7654
Doug 
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Forum Newbie
Group: Forum Members
Last Login: 2/21/2009 7:03:57 PM
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| I had the same problem. but as i live in the UK It was a little more difficult to find out what to do. i called dremel US and spoke to a very nice lady and she sent me to dremel in holland. unfortunatly that turned out to be wrong. in the UK they are serviced by Bosh and its them you have to contact. First class service, they collected it from my flat the next day and i was sent a new tool a week later. Stylus is a great, but i would have liked a removable battery. Peter
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Supreme Being
Group: Forum Members
Last Login: Today @ 6:29:49 PM
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Bosh owns Dremel is why you were sent there.
Doug
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Forum Newbie
Group: Forum Members
Last Login: 3/2/2009 3:56:06 AM
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| I agree. I use mine everyday and the time it last is getting less and less. I love the way it fit's in your hand and how easy it is to use.
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Forum Newbie
Group: Forum Members
Last Login: 5/1/2009 2:19:20 PM
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Hi there,
I have used one of the Dremel rotary tools for over 30 years
and also have a new one now too, but i don't have a cordless
yet.
What i would like to add here is some info on cordless tools
that use rechargeable batteries like NiCd's because the problem
being talked about here is common to many tools like this.
I have over 30 years experience with electronic repair and
circuit design especially with power supplies and chargers
and have noticed a problem with many devices like this one
so i thought i would share some info.
The problem usually resides in the charger itself. Many chargers
are built to continuously charge the NiCd packs, and this is what
kills them prematurely. The original designers of NiCd chargers
didn't know that continuous charging the NiCd's would kill them faster,
because they were told that the NiCd's have a self limiting charge feature
so they built the simplest possible chargers. Unfortunately,
even with many advances in technology since that long ago
many NiCd chargers that come with portable tools still overcharge
the cells to the point where their life is reduce by some 80 percent.
Instead of lasting 5 years or more, they last only 1 year, then
start discharging really fast until they are almost not usable anymore.
The only solution is to change the cells inside the unit, whatever
type it is (drill, shaver, etc.). This isn't always easy, but usually
there is a way to get the unit apart and get to the cells. The
size can then be noted and ordered online. The cells with tabs
are the best because they can be soldered together into the
required pack without damaging the cells, and it is not recommended
to solder the bare cells without tabs because the heat often
damages the cells internally.
The long term solution to preventing the pack from dying too soon
is to limit the charge time to something commensurate with the time
the tool had been used, although sometimes this is difficult to
figure out because the self discharge of the cells also plays a part
in the required charge time.
An idea then is to charge the pack (inside the device) only as long
as the ampere hour rating of the pack requires, and no longer.
For example, if the pack is rated for 500mAh and the charger
puts out 100ma, the charge time would be 5 hours. This would
limit the charge time to a safer level for the cells so they last a
long time.
If the tool is totally drained though, the charge time would be
(for the same 500mAh pack) 5 hours times 1.4, or 7 hours.
Keep in mind that charging any longer does nothing for the cells
capacity, but damages the cells a small amount which over time
kills the cells in a much shorter time. For cells constantly charging
they would die within a year or so.
The above requires knowledge of two things then:
1. The ampere hour rating of the internal pack, and
2. The charge rate of the charger that comes with the device.
The ampere hour rating could be found many times by looking
at the cells inside. They often are stamped with the rating.
If not, Dremel would have to be contacted, or special tests could
be performed on a new pack.
The charger rate of the charger could be measured with a current
meter, or Dremel contacted, or the wall wart that comes with it
(assuming it has one like most other cordless tools) could be
examined to see what the current output is. If it is rated for
100ma then it is typical to see it charge the cells at 100ma too
for example.
Good luck with them...
Dremel user for over 30 years
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Forum Newbie
Group: Forum Members
Last Login: 8/23/2009 1:29:21 PM
Posts: 8,
Visits: 8
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| I buy most every tool dremel makes. I purchased the stylus and could only find one use for it; engraving. The way it is held made it very awkward for me to do any other tool work. I use the 10 volt units, (4 of them) and they accomplish all that I need to do.
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Forum Member
Group: Administrators
Last Login: 2 days ago @ 9:02:33 AM
Posts: 29,
Visits: 191
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| Hi wanderer, You might try holding the Stylus in a reverse grip - basically, upside down with the body of the tool resting between your thumb and pointer finger and the handle pointing up. It doesn't work for everyone, but might be worth a shot.
-Hannah at Dremel
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Forum Newbie
Group: Forum Members
Last Login: 6/27/2009 5:55:13 AM
Posts: 2,
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| Hi, Just got a new Dremel Rotary tool (400). Very new to all the names and terminology. Was the reading Boards about the "stylus". It sounds great; but what is it? A tool, attachment, accessory? Where can I find a picture of it so I can visulize it? joby515
joby515
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