Instructables
Having seen a 'chainsaw' instructable which was not a chainsaw, I started thinking. I had some Lego bits, including:

A motor (4.5v)
Some gear wheels
Some chain links
And some other general bits.

These parts are required, as pictured.

The tricky part was the saw teeth...
 
Remove these adsRemove these ads by Signing Up

Step 1: Saw Teeth

These are the most tricky part, which is why I started on them first.

If you examine Lego chain-links, you will see that they interlock with pins spaced 6.5mm apart. There's enough clearence to get something very thin between the joints to be fixed on the same pins:

Aluminium beer-can, easily cut with scissors & sharp knives (do be careful).

Tools:
A hammer
A knife blade
A piece of stiff wire (from an umbrella)
A picture nail
An abrasive stick (coarse corundum, probably)
A piece of wood

Please view the pictures for the method.

Step 3: And the rest

DSCF60.JPG
DSCF65.JPG
I'm not going into details, this part is relatively easy.
The pictures should give you enough information.
I started with a direct-drive from the motor pinion, but later geared-down (intro picture). However, direct-drive off the motor works best.
1-40 of 56Next »
Groovy! Now make a Lego Ash and a Lego Deadite, for him to carve up.
That would be awesome! especially if they were made autonomous using lego mindstorms.
sharlston5 years ago
great ible lemonie
lemonie (author)  sharlston5 years ago
Took you a while to find it! (where's this ball-mill you were going to do?)

L
its oing to be delayed as i was tublining stones and i didnt clear out the silicon carbide very good so it set in the bottom but ill clean it now somehow
lemonie (author)  sharlston5 years ago
It's clagged-up with silicon-carbide? Post a question, that'd be an original one.

L
well its dry now so ill probaly be able to chisel it out
Old thread but i ended up scrapping all designs and proto types as it made hella lot of noise so i had to run it outside in the shed,there was a leak in the roof and it messed up the motor
X_D_3_M_17 years ago
..
kill u.jpg
whoa... thats... creepy...
Doctor Salvatore!
LOL.... That looks familiar.... Where is that from?
uhh... resident evil, if i'm not mistaken.
resident evil 4 in chapter 1 and 2
dang i thought that metal was paper...
lexioux4 years ago
hehe, Auto Emo. So have to make one, its perfect for todays Emo on the go.
lemonie (author)  lexioux4 years ago
i never thought of that...

L
Kush_Slayer5 years ago
well this looks safe lol
xerxesx205 years ago
Haha love it. The fact it works on broccoli is just an added bonus! Another miraculous and semi-useful/very useful 'ible. :-)
I want video!!
andrew136 years ago
and, the point of this?
Kaiven andrew136 years ago
TO RULE THE LEGO WORLD!!!!!!!
LePyro6 years ago
now all you you have to do is to attach it to a inch lego rifle and you'll have the worlds smallest lancer!! XD
Esmagamus6 years ago
Now you've got to make all the heavy stuff. And that includes Lego dynamite!
llama lord6 years ago
ah, lemonie, you never fail to astound. {insert heavy sigh)
Rodancoci7 years ago
Hey, I'm kinda new in Instructables, (though I've made a lot of them) Well, anyway, do you know those cardboard cutters? Could you make the teeht out of them? Just asking.
lemonie (author)  Rodancoci7 years ago
You have to make holes in the teeth. It's easy with aluminium, but you'd probably need a drill for steel. Also, there have to be very thin to fit the chain-links in this way - steel blades (other thank razor) would be too thick. L
Oh, OK.
Is the engine a Technic engine?
lemonie (author)  Rodancoci7 years ago
Yes it's an old (and feeble) 4.5V Technic motor. I drove it a bit above 4.5V, but I don't know how much these will take(?) L
Punkguyta7 years ago
Auto-Emo, now all the work is taken out of attention seeking!
Also, any thoughts of making it usb compatible with built in plug and "slay"? 5 volts is enough to run that eh?
lemonie (author)  Punkguyta7 years ago
Now there's a thought (4.5V motor). I do have a spare USB cable, so maybe... L
Neo17 years ago
does it use batteries or an external power?
lemonie (author)  Neo17 years ago
Either. But I used an mains-powered variable DC supply L
Ben.land1017 years ago
this would probably work on wood if you were to make the chain and motor stronger. and one question. does this thing hurt your finger if you touch it while its turned on? just curious
lemonie (author)  Ben.land1017 years ago
Well, I haven't tried that. Maybe I'll seek out a volunteer and post the results... L
ok that sounds good
stevoIution7 years ago
Hahaha, what better to test a mini chainsaw than a mini tree(broccoli) I do remember that other crappy chainsaw "instructable" and this sh!ts all over it.
lemonie (author) 7 years ago
No, but they don't have enough power behind them to bend. Bigger motor and maybe. L
1-40 of 56Next »