Great desktop CNC machine. Very high quality product you are making out of a shoe box. 10 years ago you would need a whole lab to produce these prototypes, now a credit card and education is all. Exciting times.
Hi Joop!Your video inspired me to try to digitize my PROXXON MF70. Unfortunatly I just rosted the spindle motor in manuell milling. Temperature measuring on the surface of the spindle motor is a must. Touching the house of the motor compartment, using the hand, is way too uncertain, will be "too late". The low power, only 100 Watts of the spindle motor, does not allow long time heavy work.I asked my supplier, Conrad, for a spare spindle motor. Conrad uses an English supplier. Their responce time on mail is very slow, week or weeks.... Hopefully a new motor is on the way.Anyway, it is a nice milling machine working in soft materials like wood or lead. For brass or steel, only make very small works.
Wow, great job. I have MF 70 and love doing stuff with it but thought lately about doing the same thing - automate it with the stepper motors. I see that you also have my dream FD 150/E, I want it so much :). One more time great project.
Beste Joop, Ik heb ook een MF70 en zou deze graag ombouwen naar een CNC machine. Ik heb helaas niet zo technisch dat ik alles zelf kan bouwen (aansturing servo's) maar misschien weet jij een betaalbare oplossing of een leverancier die deze sets verkoopt? Ik bouw zelf frontjes voor Flight simulator, zodat je zonder muis kunt vliegen en maar hierbij ook gebruik van de Arduino Mega. Een MF70 CNC uitbreiding zou het werk een stuk leuker kunnen maken. Een tip waar ik hiervoor terecht kan zou ik erg blij mee zijn! Groet, Jaap.
What is the rated torque of the motors at their nominal current? (if you have, a model number is fine, if a datasheet for it exists). Do you problems of losing steps under certain circumstances with your setup? I've got the some mill and am thinking about adding steppers (NEMA17 as well), but not really sure what minimal torque I should go for.
These motors are ridicules strong(holding torque 4500g/cm) when used at the nominal voltage. Way to strong for this application so i reduced the voltage and the current. Never missed a step.
Hi, nice work. I have three questions concerning that build. 1. Which Stepper motors did you use, and how much power do they consume. 2. Which controller/driver ic are you using to control those motors? 3. Which power supply did you use?
Remove the bolt on the other side. You can than remove the spindle and wheel. Slide away the indicator on the spindle. There is a pin that you need to remove first before you can take off the manual control wheel.
I'm still using this machine frequently and it is still going strong. The CNC upgrade makes life much easier. In stead of using a fretsaw I often use the Proxxon.
this is a great idea. I'm currently working on a similar project. may I ask you please share the code and circuit diagram with me? I really need this. Best Regards.
you'll reduce the amount of vibration caused by the motors => the noise from the steppers will be nearly silent. (I assume that's why you use music with such a high volume).
Microstepping reduces the torque of the motors for a single step (the more microsteps the worse) which can lead to less accurate cuts. And I doubt the noise of the motors is an issue when you have a spindle screaming at 20000 RPM above them.
@@superdau No, it doesn't. Microstepping has less torque into the intermediary steps (because it is between coil positions), but the full step positions still retain the same torque, so at best you have more precision, but at worst you keep the same you had before.
Great video buddy. I am a hobbyist and have been looking into purchasing something like this. Where would I find a guide to convert the MF70 into the CNC?
Without a doubt this Proxxon milling machine looks cute at the first glance. But for its cost it's possible to build a way better real mill that is capable to deal with aluminium at hundred times higher rates.
hi I have a lathe that I built myself and I have a cross vice and I want to put 2 step motor and I saw your video I like it if I can have the wiring diagram for arduino more if I can also have the sketch for arduino
Hallo seher gutes Video Gefällt mir Da ich auch gerade Meine Proxxon MF70 auf CNC umrüsten will eine sehr schöne Idee. Hatten Sie einen Schaltplan und den Arduino Sketch für mich. Danke schon mal im voraus
nema17 is strong enough for this ? I have read that nema17 is too weak for most cnc. I see on ebay building kit for nema 23, so make it a difference for mf 70?
I have the Proxxon TBH, can this be converted.. i bought with this intention.... but im not sure how one would connect the down motion.. any ideas if its possible or not. many thanks
Nice job. that's pretty much what i'm currently working on. may i ask you what you used as a power supply for the motors? p.s.: aren't you using any reference/end-switches?
Is this normal? Do you have an engineer background? I can´t belive it. You even got job request out of a simple hobby? I'm impressed really, somewhere in Europe has to do with theway of thinking. That theres no limit for what can you do. A search for freedom
hey great video! can you give some advice how to make a simple manual speed control? what hardware do you need, what do you have to code for arduino in order to do so?
I just need a very basic "how to drill a hole on a mini miller"as I am expecting a proxxon mini miller and it is on its way, but I am excited to prepare myself to use it ASAP...but I am use to, only using a hand drill from my grandpa many years ago. I would like to teach myself all about this and while a plain proxxon mini drill press is probably more up my alley, this is what I will have, I am grateful, but need a " milling for dummies" video. Any suggestion? The proxxon site has a video that is above my current understanding of what all a mini miller can do. and it is something I am not too sure about, but am way excited to learn. I am hopeful as a mixed media artist (both 3D and flat designs) and as a only old school hand tool jewelry maker.....that I can learn to do some really fun stuff. Any ideas would help.... thank you! (F.Y.I. When I googled this machine and ask,what all it can do, it gave me this video, and as I never use computers, this whole thing is turning into an adventure of sorts!!!!
Joop Brokking, what is your overall rating of MF 70? i just want to know opinion of some experienced eye; may people say bad things about it. of course sherline will beat it, but it's more pricey. some say MF70's motor dies quite fast and such things... i still think it must be more or less good quality product.however i am quite skeptical about minimum speed being 5000rpm. aluminum might need 500 rpm, which this mf 70 is not capable of. maybe some guys who worked with stronger mills simply pushed the poor mf70 too strong and that's why it burned... how long do you have it and does it's motor still works? :))) is it worth buying? or is it a waste of money like dremel rotary tool is (it's a toy don't buy it threw 120$ in garbage couple of years ago )
al For me the MF 70 is an excellent machine. If you adjust the slope correctly you get some nice and consistent results. I have it now for one year and it still works without any play or slope. I'm also running a FD 150 micro lathe of witch I burned the motor due to overload. These motors are burning fast at low speed. I replaced the motor of the FD 150 with a low voltage dc motor and running the MF 70 at higher rpms with good results. Long story short: I still don't regret my invested money ;-)
yeah; finding motor replacement for proxxon is hard... it uses special gear transmission inside so fixing it is also very complex thing... so they hate low rpm-s... maybe because during low rps motor delivers most of it's power and heats up. some people burn motors because they think it's brushless. they let it work, brushes get consumed and then motors burn. once every 2 weeks it needs to be disassambled and checked if the brushes are still thick enough to make motor running; or buy new set of brushes and replace them. so are the MF 70 's and FD-150 's motors brushless or brushed? (if i a'm being too annoying simply ignore me :D )
al The motors are brushed. The motor controllers have some sort of a governor to keep a constant motor rpm under various loads. If the rpm drops at low rpm the current increases and the motor heats up very quickly.
Would you be interested in making a system for my 70? or know of someone? I have the 70 but in need of servos and program to run it. Contact PM with pricing. Thanks
I forgot to write down the dimensions of the stepper plates. And as described in the video description I don't use a cam computer. The milling program is programmed in the Arduino.
AMIGO ONDE VOCÊ COMPROU ESSE MICRO TORNO, AMIGO ACHEI GENIAL ESSE TORNO SUPER PEQUENO. CASO VOCÊ POSSA ME PASSA O LINK DE ONDE VOCÊ COMPROU ESSE TORNO. E PARABÉNS PELO VÍDEO. FRIEND WHERE YOU BOUGHT THAT MICRO AROUND, I thought GENIAL FRIEND THAT AROUND SUPER SMALL. IF YOU CAN PASS ME THE LINK WHERE YOU BOUGHT THAT AROUND. CONGRATULATIONS AND VIDEO.
Eu escrevi na minha língua e mandei o tradutor traduzir, o erro foi dele, não meu amigo. Acho que ele interpretou como uma outra situação, mas valeu a dica.
cara a melhor opção se vc tiver dinheiro é ir buscar fora do Brasil tipo EUA ou na Europa. já tentei comprar pelo site da proxxon, mas infelizmente para eles o mercado brasileiro ainda não é atrativo é tanto que eles não tem a opção de mandar para o Brasil (obs: troquei alguns emails com a central deles) mas a fresadora você pode achar na loja do mecânico e custa cerca de 2.700 sem o frete
Eu comprei a minha na loja As Máquinas, mas está esgotado. Na Loja do mecânico você encontra um pouco mais caro: www.lojadomecanico.com.br/produto/95791/21/628/153/Micro-Fresadora-de-Bancada-100W-220V-MF70?gclid=CjwKEAiAxKrFBRDm25f60OegtwwSJABgEC-Zxw_ENJIX6kwidTiOQt2YKia6U-ri-p46dwtAIdQGiRoCF8nw_wcB
+Angel Indacochea Te dejo arriba lo que ma' s se parece, aunque me parece que esta es una mejor solucio'n y aguantan hasta 2.5A que si mueves los NEMA 17 a 24V es ma's que suficiente y la corriente no es mucha. Yo ahora quiero hacer algo parecido para procesar de varias maneras PCBs.
How the heck do you get position feedback from these stepper motors? i mean, you can not command it's position by applied pulse, since you don't exactly know what kind of resistance that motor will get from the drilling process. so your pulse of 1us may increment 1 degree rotation or 10degree it's impossible to predict. also you managed to maintain nearly constant speed during drilling and fast speeds before drill bit reaches the object. i am ~100%sure you have some kid of feedback mechanism there.
al There is no feedback system. One step is always the same. The motors are strong enough to overcome any resistance. Same principle as on a 3D printer, only with digital readout ;-) The only trick is to slowly ramp up the speed of the motors. Otherwise they will miss a step because they can't keep up.
Joop Brokking hmm... okay; so you managed to adjust drill bit's cutting depth and it's cutting capability and synchronized it with motor's turning in such a way that a motor always manages to increment let's say 1 degree by fixed amount of impulses. and slowness is the key... but if something goes wrong and motor misses (skips) even a single degree, because of high resistance from a drill bit; this will influence entire milling process and the end product might come erroneous. like if you were milling a face on aluminum sheet. it could mess up. however your solution fills a niche in technology gap perfectly and does it's job while keeping electronics simple and affordable. great work. i'm gonna mess with the steppers by fpga-s. i have some high seed/low speed processing demands and want to pack everything into a single IC.
I enjoy your videos but I suggest you lose the music altogether, as it offers no information at all. We watch these types of videos to gain knowledge and the music is distracting and not helping in the least. Try a running commentary instead.
dear sir currently i am working the same project four-axis Digital ruler using adrunio, can please send me the hardware schematics and c code. i will be very graceful if u help by providing c code and schematic. thanks
May I ask what motors did you use, or if you interested selling the end product. I also use proxxon hardware for my Rc needs. Thank you. Erick @ prodigy net
