Introduction: Mini Circular Saw With Dc Motor

Picture of Mini Circular Saw With Dc Motor

Hello, I show how I made a mini circular saw dc motor advantage he had fitted with a drill chuck (used in the proposed mini drill press), I have done everything trying to go modular, ie the engine to use both for drilling and for the saw.
The mini table saw is simple, all a bit interesting is that I placed the lid hinges to work more comfortably, since the idea is that the mini saw mini drill and share the engine.
The motor is attached by nuts that allow varying the height of the saw cut.
The diameter of the saw blade is 8cm and table dimensions are approximately 28x20 cm.
Thanks for your attention, greetings.


Kiteman (author)2013-09-10

Fit safety guards!

pfred2 (author)Kiteman2013-09-10

Safety guards just get in the way. They're a menace.

Marchalis (author)pfred22017-09-04

10 fingers are a menace too.

pfred2 (author)Marchalis2017-09-12

I'm lucky that way. I was born with only 8 fingers, and two thumbs.

klee27x (author)Kiteman2013-09-13

I agree this saw is a little lacking in the safety department.

OP: while this saw lacks a bit in size and power, there's still a fair bit of stored energy there. Consider the drill chuck's mass is adding to the flywheel effect. So please make sure you bolt/clamp the thing down before you use it. And be careful of your hand placement. If you have your fingers on the stock behind the blade, a kickback will draw your fingers into the blade.

The table saw is a tool to be seriously respected. The lack of a riving knife is forgivable, given the size of this tool. But the lack of a blade guard, miter slot, fence, and adjustable blade height on this saw really limit the ways you can safely use it. You can't use a sled without a miter slot. And you can't use feather sticks nor a push stick when you don't have a fence.

Consider the cost of one severed tendon repair could easily exceed the sum cost of every tool in Marc Spagnuolo's workshop.

klee27x (author)klee27x2013-09-13

edit: I meant feather boards.

klee27x (author)klee27x2013-09-13

Let me share another 2 cents, as a wood "player." (Vs wood worker). The table saw is a really crappy tool for cutting small things. It can be done, if that's all you have. (With the aforementioned sled and/or fence + push sticks). But it's not very efficient. So a small table saw... well. If you have a particular application in mind, and you have figured out how to achieve that goal, safely, then that's great. But this does not look like a tool I would want to "play around" with!

ric12335 (author)Kiteman2013-09-10

You're right, it can be dangerous to work with, but I'm trying to improve in this area.
I have thought about doing an internal structure that covers the circular saw, I'm on it.
Thank you for your wake-up call.

pfred2 (author)ric123352013-09-10

You can put all of the guards in the world on the machine and if it still cuts materials it can still cut you too. Never lose sight of that fact and you should be safe. If I never come in contact with the spinning blade I'm OK right?

Remember, safety third.

ric12335 (author)pfred22013-09-11

You're absolutely right

andrew mcneil (author)ric123352013-09-11

hi i have wanted to make something like this for sometime to cut circuit board but never figured out how to make a safety guard that would work without getting in the way. if you come up with something please post or make an updated instructable. have added this to my favorites well done.

misha-ell (author)2017-04-24

hi what kind of motor did you used?

Abdul Gafur (author)2016-01-21

Thanks for the pictures, its usefull for me..

Abdul Gafur (author)2016-01-21

Thanks for the pictures, its usefull for me..

Maze38 (author)2015-12-06

Thanks for the pictures, cause that definitely tells me exactly how to build it.

ric12335 (author)Maze382015-12-20

hasta un crío entendería las hace falta ser ingeniero.........

Yonatan24 (author)Maze382015-12-20


chrisjlionel (author)2015-07-20

Is there any vibration issue??

ric12335 (author)chrisjlionel2015-11-02

Yes there is vibration problem, I use sergeants to secure a table.

jkristensen1 (author)2014-02-28

How did you attach the drill chuck to that motor? Could you do an instructable on that?

ric12335 (author)jkristensen12014-03-01

Hello. the connections are as follows:

- Saw attached to mandrel by eight metric screw diameter coincides with the center of the saw. As the mandrel drill bit binds.

- The metric screw mandrel placed him equal to the motor shaft, I hook chuck screw by screw.

- Rest of the motor shaft screw and the one using threaded pin. Curled screw to pin it and using epoxy glue one to the driving axle pin. Not the best solution, the more interesting it would be to change one drive shaft with thread ....

Greetings, I hope you has cleared.

jkristensen1 (author)ric123352014-03-01

I get an idea, but still not entirely sure on how you did it. Is there any possible way you could do a picture by picture step on a new instructable? Or even a video on it?

Atom 6 (author)2013-12-27

Where did you get the blade from?

ric12335 (author)Atom 62013-12-28

It is the WORX company, saw 8cm. rotorazer like.
The buy in a DIY store.
A greeting.

Atom 6 (author)2013-12-27

Neat. :)

ric12335 (author)2013-09-11

It works fine. I'll try to show you with a video post.....

Raphango (author)2013-09-11

Whoa! Now I'm gonna have one circular saw! =D
(Cant buy a professional one LoL)

Great project! ;)

ric12335 (author)Raphango2013-09-11

Thanks.I hope you find it useful.

tgferreira184 (author)2013-09-11

How did you plugged the chuck to the motor? I didn't understood. Anyway great project. Also, how does it work? Does it cut well? Anyway great project.

ric12335 (author)tgferreira1842013-09-11

Hi, I have proven to cut medium density and plywood both 1 cm thick and really worked well, slow but with a constant speed in the cut.
The engine is 24-36v, consumption of less than 1.5 A. It is the same engine that I used to make a mini drill press and the engine is fine, Buhler Motor Company.

To attach the cutting disc I have used a screw spindle with nut for attaching the disk and the other part connected to the mandrel, the grip is good by the moment..

Thanks for your comments. A greeting.

foobear (author)2013-09-10

cute and scary! I like it

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