High torque, really low speed drill

[Brinkman]

The tool I have that I dislike the most to use is my dremel for drilling. When drilling I like to go very slowly taking my time. And that high pitched noise of the dremel wants you to do it fast and hastily. 

 

I like pin vises a lot. But the pains in my hands don't like them.

 

Is there any high torque drill in the size of a dremel with low rpm? I'm not talking low rpms in the 10 000s lika a proxxon but perhaps closer to a 1 000? And with a trigger or footpedal that isn't a simple on and off switch. And that is quiet.

 

Like a normal cordless drill but smaller.

 

I've read about Foredoms. I like many things about them, but they also have their high rpms as a major selling point.

[No Idea]

Hi - I’ve got the foredom drill and although they are expensive it’s probably what you are looking for. It has a foot control so you can go as slow as you like. It also has loads of torque and I cannot compare it to my old dremel. 
 

Mark

[bruce d]

What Mark said.

[Gaetan Bordeleau]

5 hours ago, silverman834 said:

I like many things about them, but they also have their high rpms as a major selling point.

50,000rpm is for metal. Many operations works better at that speed instead of a lower speed

1000 rpm is the lower speed

2 ways to adjust the speed: roughly by the pedal or precisely by a control knob

5 hours ago, silverman834 said:

Is there any high torque drill

this one has  a lot of torque , it extremely quiet and it is brushless

[Roger Pellett]

If you like pin vices, how about an Archimedes Drill?  It has a swivel on top that you hold with one hand and a slider that you work with the other hand.  Look for one on Jewelry supply sites.

 

 

[Brinkman]

Regarding the Foredom drills I had only seen the SR version that goes up to 18 000 rpm. Sure, I can throttle it back, but than I don't nearly get the torque that the higher rpms get. But now I saw their LX that goes only up to 5 000! That looks like what I'm looking for! Now I just need to find a shop with it in the EU.

 

1 hour ago, Roger Pellett said:

If you like pin vices, how about an Archimedes Drill?  

Yes, I really like the idea of them, except that they are two handed.

[No Idea]

Cooks on gold sell them in the UK that’s where I got mine from. I’m unsure though why you think RPM has anything to do with torque?  The motors that Foredom supply are very powerful and I’ve never been able to stall mine. Even at really low speed the power is there and I think mine is an SR.

[Bob Cleek]

The relationship between speed and torque is a function of the motor design. Inexpensive motors can make up for their inherent lack of heavier (and more costly) construction by using speed to make up for a lack of torque. Hence, when their speed is reduced, so is their torque, often to the point where at lower speeds they stall out. A heavy-duty electric motor can be built to maintain torque at low speeds, but the construction costs more. These will generally be tools like the Foredom flex-shaft and belt-driven dental engines.

[Roger Pellett]

Power, measured in horsepower or watts, is the rate at which work is performed.  In a piece of rotating machinery, power is torque x RPM or ft-lbs/min.  Bob is exactly right, a manufacturer wanting to promote his product by advertising that it “has a powerful 25 watt motor” can do so inexpensively by using a high RPM low torque motor.  There are also possibly some advantages to the customer too.  The tool can be much lighter.  The Dremel type tools were originally sold for light duty polishing, wire brushing, and grinding; all applications where high speed is desirable.  Trying to use them for low speed high torque applications is something for which they are ill suited.

 

Roger

[Roger Pellett]

My electrical engineering knowledge is almost 60 years old, and so is the technology in at least some of the Dremel type tools.  There have been some tremendous improvements in electric motors lately, that I don’t pretend to understand.  Electric propulsion of ships was tried and largely abandoned in the 1920’s and 1930’s.  Now with improved electric motor technology it is making a comeback.  Maybe this improved technology will or has resulted in improved miniature rotating tools.

 

Roger

[KeithAug]

On 6/22/2022 at 7:49 AM, silverman834 said:

Is there any high torque drill in the size of a dremel with low rpm?

If you want high torque and low speed have you thought about buying a small / cheap electric screwdriver with a chuck mounted in the hex drive. Just a thought🙂.

[KeithAug]

Also rather than a pin vice for drilling small holes you might want to consider one of these.

 

 

My son bought me the kit as a stocking filler - to some extent as a joke, but surprisingly i find myself using it to drill awkwardly positioned holes where I would normally revert to a pin vice. The speed is very low - probably 400 rpm and the collets only go up to 3mm (.118")  so it is a bit limited.

 

A review:- https://doogsmodels.com/2012/07/24/gear-review-tamiya-electric-handy-drill/

 

 

Edited June 23, 2022 by KeithAug

[Techtonic]

This micro drill just came on the market a couple of weeks ago: https://www.amazon.com/gp/product/B0B3HYVPR4

 

To me it looks ideal for ship modelling type applications so I ordered one. When I ordered it it was only $35 with the coupon - but I guess that was an initial promo price as now it is $47 with coupon. It ships from China so mine should arrive in a week or so.

 

There's also pro, drill press and screwdriver versions of it: https://www.amazon.com/s?k=ARROWMAX&crid=121NPJHTL5150&sprefix=arrowmax. 

 

I found more info on it here https://www.indiegogo.com/projects/sds-pro-smart-motion-control-mini-electric-drill--2#/

[lmagna]

This is what I have used for years. Gives better control so small bits do not break as often. Low RPM so plastic does not melt. Low cost and can still be used as a screwdriver. In addition it is high torque and the battery charge seems to last forever!

 

The same model without the light is even less expensive.

https://www.amazon.com/BLACK-DECKER-BDCSFL20C-Lightdriver-Screwdriver/dp/B0753F9HK9/ref=sr_1_6?crid=2B53APSN4KS1Q&keywords=cordless+screwdriver&qid=1656107639&sprefix=cordless+screw+driver%2Caps%2C127&sr=8-6

 

https://www.amazon.com/LONKER-Keyless-Converter-0-3-6-5mm-0-3-3-6mm/dp/B0722R1VJW/ref=asc_df_B0722R1VJW/?tag=hyprod-20&linkCode=df0&hvadid=241941495556&hvpos=&hvnetw=g&hvrand=4764432449092262939&hvpone=&hvptwo=&hvqmt=&hvdev=c&hvdvcmdl=&hvlocint=&hvlocphy=9033346&hvtargid=pla-457878370008&psc=1