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Forum topic by Jordan posted 09-07-2012 05:45 PM 1920 views 0 times favorited 35 replies Add to Favorites Watch
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Jordan

1358 posts in 1791 days


09-07-2012 05:45 PM

So I’m trying out two rotary power tools – one is of course the Dreemel. It goes 30,000 rpm,s and to this day, I’ve never been able to stall it and it has guts.
The other is a new tool, it also goes 30,000 but has a very flexible coil shaft instead of the stiff cable shaft of the Dreml and the motor is pin drop silent.
What I can’t figure out since I know nothing of electronics, is why this other little tool which should be a dream, is so gutless and easy to stall if too much pressure is demanded?
Is it the Hz or or volts or what? I’m looking at the labels on the sides to see if I can figure out what shows the engine difference.

-- http://www.jordanstraker.com


35 replies so far

View pintodeluxe's profile

pintodeluxe

3393 posts in 1480 days


#1 posted 09-07-2012 05:52 PM

Amps is the typical measure of an electric motors strength. Even the difference between my 2.2 amp and 3.0 amp sanders is significant.

-- Willie, Washington "If You Choose Not To Decide, You Still Have Made a Choice" - Rush

View MrUnix's profile

MrUnix

517 posts in 865 days


#2 posted 09-07-2012 05:53 PM

A lot of the better tools use electronic speed control which monitors RPM and provides power when needed to maintain speed. I have a Makita polisher with it as well as ‘soft start’ and you cannot get it to vary more than a few RPM regardless of how much pressure you apply.. that sucker will twist your arms off first. I think Dremel calls it ‘electronic feedback’ or something, but it’s the same. As for the flex wand.. most of the rotary tools today are modeled around the dremel and many parts are interchangable.. I have a kawasaki, built-tuff (northern tool) and dremel and all the parts fit each other just fine. See if that flexible wand will fit on the dremel.. you may be surprised.

Cheers,
Brad

-- Brad in FL - To be old and wise, you must first be young and stupid

View a1Jim's profile

a1Jim

112170 posts in 2244 days


#3 posted 09-07-2012 05:55 PM

Hi Jordon
I would never call you dumb. If the one tool that is stalling id the flexible shaft tool I think it has to to with the flexible shaft, I have a Fordem flexible shaft tool and had experience the same thing even to the point that I had to replace the shaft after putting lots of pressure on it. I don’t know if this helps or not,perhaps someone else has a better answer .

-- http://artisticwoodstudio.com Custom furniture

View Kindlingmaker's profile

Kindlingmaker

2654 posts in 2193 days


#4 posted 09-07-2012 06:08 PM

Hi Jordan, Sent you an email.

-- Never board, always knotty, lots of growth rings

View 1stmistake's profile

1stmistake

13 posts in 838 days


#5 posted 09-07-2012 06:28 PM

Pintodeluxe is on to it… the number of wraps and size of the electric coils in the motor determine how much current can run through it. Motors with more copper wrapped into the coils can handle more amperage. More amperage leads to more torque applied to the shaft. More torque at the shaft means it can resist more torque that you apply to the end of the tool. Sounds like the dremel has a beefier motor, while the no-name comes up short. Also probably accounts for the difference in sound… more power is usually noisier in motors of that design.

View Jordan's profile

Jordan

1358 posts in 1791 days


#6 posted 09-07-2012 06:32 PM

Oh that makes sense too. Darn, I was really hoping this little tool that could, could! But it just can’t.

-- http://www.jordanstraker.com

View reggiek's profile

reggiek

2240 posts in 1937 days


#7 posted 09-07-2012 07:32 PM

Jordan, sounds like the no name tool is not built for heavy removal. Too bad as it sounds like that tool is much more efficient.

I like my Proxon for heavy gouging (when not at my bench)....I use my dremel for metal and finish stuff as it tends to overheat so quickly. The only thing wrong with the Proxon is that it does not have the ability to use the dremel accessories – although it can use all the same burrs. On my bench I have one of the 1/2hp Mastercarver rotaries and it is excellent – I have used it to hog off metal and it won’t even slow down when I put some pretty heavy pressure on it.

-- Woodworking.....My small slice of heaven!

View Jordan's profile

Jordan

1358 posts in 1791 days


#8 posted 09-07-2012 07:44 PM

Reggie, I tried the Proxxon too – the little chain, same thing, I found it just didn’t have enough oomph and I could stall the wheel. I find this little rotary tool is about the same power as the Proxxon. How many rpm does the mastercarver have?

-- http://www.jordanstraker.com

View crank49's profile

crank49

3443 posts in 1637 days


#9 posted 09-07-2012 07:56 PM

Guys,
There are dozens of other options for small hand held grinders, flex shaft tools and what have you. Many of them are specefic to jewelry manufacturing and I have never seen them outside of speciality supply houses.

The Foredom has been around for a very long time, has a 1/10 to 1/2 hp motor (depends on model) and a flex shaft with many different handpieces available to hold the tools. They make a handpiece with planetary gearing to get 35,000 RPM from a 10,000 RPM motor and flex shaft, for instance.

There are some German built DC powered tools that have the power of the Foredom tool but the micro motor is entirely in the handpiece; there is no flex shaft to rob power.

Dremel tools have also been around for a long time and they have profesional tools that are not offered in the usual mass market retailers.

The problem is that most of these high powered tools carry high powered price tags. Pretty easy to spend $400 to $500 for some of these. But, if I make my living setting $10,000 diamonds I can afford a precision tool that I know won’t stall or vibrate or sound like a jet engine.

-- Michael :-{| “If you tell a big enough lie and tell it frequently enough, it will be believed.” ― A H

View Jordan's profile

Jordan

1358 posts in 1791 days


#10 posted 09-07-2012 09:09 PM

I have not considered the Foredom because I did not know that they had a hand piece with the high rpm ability – but I will certainly look into that.

It’s not the cost that matters to me, I just happen to be trying out a new tool for a company and was trying to figure out why it didn’t have the same power as the noisy old Dremel – which has worked great, has been cost efficient and out run my old Foredom by about 15 years.

-- http://www.jordanstraker.com

View lanwater's profile

lanwater

3087 posts in 1601 days


#11 posted 09-07-2012 09:48 PM

I would love to know which one makes even half the noise of the dremmel. I would buy it.

I have a dremmel for many years and it works great but the noise could be heared from afar.
That’s why I don’t use it much.

-- Abbas, Castro Valley, CA

View Roger's profile

Roger

14660 posts in 1470 days


#12 posted 09-07-2012 11:03 PM

No way, no how, just no to dumb. The only dumb question that there could ever be was, is that coffee hot

-- Roger from KY. Work/Play/Travel Safe. Kentuk55@bellsouth.net

View LittlePaw's profile

LittlePaw

1571 posts in 1745 days


#13 posted 09-08-2012 12:21 AM

My Dremel just died on me. It;s speed dropped down noticeably to about half speed. But it would pick back up when not grinding. After a while, the switch turned itself off as soon as I turn it on!

-- LittlePAW - The sweetest sound in my shop, next to Mozart, is what a hand plane makes slicing a ribbon.

View Jordan's profile

Jordan

1358 posts in 1791 days


#14 posted 09-08-2012 12:23 AM

Paul my newer ones seem to wear out motor brushes and slow down until I tighten or replace them – could that be the problem?

-- http://www.jordanstraker.com

View Moron's profile

Moron

4666 posts in 2560 days


#15 posted 09-08-2012 12:43 AM

http://www.gesswein.com/c-272-wildfowl-carving-tools.aspx

The above link and picture are what many pro and amateur carvers use. It has a variable speed form 1,000 to 65,000 rpm (at least mine does ). The carving device has forward and reverse motion which is great for hair type fibers found in woods like basswood etc.,. It also has a quick release chuck and takes 2 different diameter bits being 1/8” and 3/32.

there are choices of the actual “carver” but are are small, super easy to manoeuvre and come with an old fashioned telephone type cord making them almost like a paint brush.

the actual transformer/motor above has a fuse and a “breaker” which when the the pencil is driven to hard, the breaker will trip avoiding costly repairs.

I’ve had mine for more then 10 years, and it has worked flawlessly. I personally love it.

Good Luck

-- "Good artists borrow, great artists steal”…..Picasso

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