Need new drill ! help

Hey guys, very happy to see all the great work here, im an artist based in amsterdam using an MPCNC for over a year now,
A local engineer built it for me, and since then i cannot reach him anymore.

  • My drill got completley F***** up, and its time for me to get a new one, but I have no idea wich one i need, so thought you guys might have an advice for me.

here is what i do know:
ER-11 colette
its attached to an external small box that controlls the speed with a nob.
attacjes to machine with 4 screws from top of drill
power comes from a box that transforms the current to 24V (i think)

ill attach all photos i think are related, and i do not have a 3D printer so cant really get a new part made.

thanks !!

Not your standard setup :slight_smile:

Thats a brushless outrunner motor (often for RC airplanes/cars). The box on top of the stepper is just a servo controller, the little blue thing hanging under it is the brushless motor controller.

What exactly is wrong with it ? Those motors are usually pretty tough

Jakob is right on all accounts. Is there anything written on the motor itself? What about the brushless motor controller (the thing hanging between the top and the motor)?

The mounting locations of those 4 screws are usually pretty consistent for a particular size. One place to get a lot of options would be

There are a lot of options there. Most of the parts are quite cheap, but if you order from Hong Kong, then they take a little while. Hopefully you can move that ER11 collet to the new motor. You’ll need to match the basic size, and the shaft size (so you can mount your collet on it) and if it was working OK so far, then you’ll want to match the kV too.

Also, if you don’t mind, I’m sure many folks here would like to see some of your work. Brag about your exploits, please!

Hey ! thanks for your fast replies,
The problem is the drill is getting super hot, as it, absolutly burned my finger while touching it.
i drill all kind of strange materials sometimes and i think it got blocked with dust inside.
im adding more photos that might help understand the setup and what i might need to replace,

another problem i had is lots of whobbeling while drilling (not always), but if i tried to go deeper then 0.3mm per depth pess it would wobble crazy, i have a feeling those 4 screws holding the drill arent sitting well in the plastic and allow some movment that makes the wobble… not sure

and if you want to see some of my work using the mpcnc :
all drawings and ceramic pieces are made by the cnc

best !

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Whoa, your IG is awesome. Nice work, artist of many media!

The motor should be really common, is there any numbers on it at all? What diameter is the shaft?

Hey Ryan! Thanks, unfortunately the drill is more secretive than any NSA agent, zero markings or text on it, I’m guessing I can measure the distance between the 4 bolts?
What I’m mostly worried about is that the drill will work with that power box I use and the speed controller I have.

More over, is there any better drill recommended for around 150$ that might be a bit stronger?

The dewalt 660 that we all use is about $60 and way more powerful.

Is it gonna be rocket science to connect it to my rig? I guess I need to get a proper mount printed out? Does it have internal speed control or also external?
Sorry for so many questions :smiley:

You will need a new mount for anything you use unless you find a motor that fits your machine. Whoever made that for you did some very non standard things.

Most people use a trim router, whatever is common in your country, and then it just plugs into the wall and you manually turn it on and off. I/we can help you get going but I see you aren’t from the US and I have no idea what might be available in your country. If you have a bit of tech savvy you can buy a 400W spindle with an er11 collet from ebay or aliexpress and those will be more powerful than what you have.

Curious, how long did that little motor last? Just by eye, it looks a little underpowered. Probably great for engraving, but serious milling looks out of the question. A one face mount that is plastic is not rigid enough. That’s why most if not all router/spindle mounts (like the dw660) have clamps at the top and bottom, not just a plate. Suppose with an outrunner motor like that though, that’s the only place you can hold it from since the outside spins.
For the work you do, imo the 400w ebay spindle would be a better choice because it has the er11 collet. Only downside is it is a little more work to setup.
Routers are great at just removing material reliably and cheap.

Hey Kevin!
The drill lasted around 7 month, and I agree that single face mount was probably the reason for it being unstable. I did mill materials like plaster that probably helped in getting it stuck.

I will mainly use it for cutting and engraving mdf, wood, plaster and maybe soft rubber. So no crazy hard materials.

I’m afraid my knowledge of electronics is too poor for the 400w, I’m aiming at the 660 now or something equivalent. Once I or we figure out what drill will be the one, where shall I post to get help in understanding the mount system? I probably can get a friend to print it out for me

We could help you wire up the 400w, if it looks appealing to you, it really isn’t that bad and they have a speed control.

The motor you have, have you cleaned it out? either it is just dirty or a bearing failed, the bearing is a bit harder to replace but you can clean it, they are actually waterproof. but it would be best to oil the bearings after a good cleaning. Or even more simple try some computer duster first to blow out any debris. They other part could be your speed control it could have died and they are only a few dollars to replace. It is all wild speculation though.

Hey Ryan!
By the sound and spin of it on really think its damaged, plus as I said in the current setup I can only drill 0.2mm per depth press in mdf (that’s very little I assume?) , if I go deeper it all whobble and fail catastrophically, so I think after 7 month it’s time for an upgrade :smiley:

With that type of motor usually its either a loose magnet (you can usually feel that) or a bad bearing, which would be my guess. Those motors aren’t built for milling :slight_smile:

If you are in europe I can recommend the Kress 800 or 1050, but it’s a bit above the 150$ I think.

and yes… 0.2 mm is pretty low :slight_smile:

Thanks Jakob!
By the way, do you know of any active members in Amsterdam or Holland? Would maybe be helpful to meet someone that can help

Hey guys!
Any thought about this drill?

Is that the right direction?
This one is in budget and avaliable in Amsterdam

It’s like a blue dw660 :slight_smile: Yeah that one looks great everything about it is identical unless I am missing something. 1/4" and 1/8" collets. I can’t find a mount for it on thingiverse. The mounts for makita are all for the bigger sized router.

We’ll help you figure out how to wire any new motor or router if you tell us how you generate that gcode. Your work is amazing! How much of that line art is made with the CNC machine?

I’ll actually help even if you don’t share…

So the options above are:

  1. Replace the hobby motor with another one. This won’t be great, because it’s underpowered, and it will fail again soon. But most of them will mount in the same holes, and connect to the same speed controllers, but finding the right speed of motor is going to be key, unfortunately.
  2. Replace it with a trim router or larger router. This will give you plenty of power, and as long as you don’t fill it with clay, should be very durable long term. Some will have integrated speed controllers, otherwise, you might find a router speed controller at a hardware store. There are some here that you plug the router into, and it has a knob to adjust the speed. After a ton of routing, you’ll probably just have to replace the brushes to get another ton of routing out of it.
  3. Replace it with an ebay/chinese motor and power supply. You’ll have to find a mount again, that you can match up with your CNC. Many of them have wired up to them a speed controller. This might be on the higher cost side. I get the impression they will be more sensitive to dirt than option 2).

The hardest part is going to be finding a mount. It’s going to be very tough to get someone who’s not touching the router to design a mount for it. If you can find a part on thingiverse (I think you have the 525 version of the MPCNC, but an overview pic of the machine and we can tell), then that’s your best bet.

Hey Jeff! Thanks

First of all I aim for the makita since all tool bits I have are 1/8 inch already so would fit directly in the more sturdy machine.
If I can’t find an existing mount anywhere online I might ask someone to design it for me.

It’s 100% cnc drawing, it’s my concept to not use my hands at all in the drawing process, the methods and algorithms are very different and it’s over 7 month of research but besides algorithms I develop directly with some crazy scientists here are some you can try yourself (some free some less)
Drawbot by:


Now most of the drawings you’ve seen are with other and more or less complex methods, but it’s an extremely slow learning curve with cnc and drawing so thats some places to start :slight_smile:


I did find that the barrel size on the 3706 is 2 1/4" if that helps find a mount.