Proxxon 37110 Micro Mill MF 70

Small and beautiful – the accurate mill for lab, optician, jewelry, electronic- and model-building projects. The unit is supplied with a stable base of cast iron. Both vertical column and compound table are of treated, high quality aluminum. All axes are play-free and have adjustable slides. The headstock, made of die-cast aluminum, houses the 24 pole balanced special motor and provides stability even at high operating speeds. This stability facilitates the use of the finest cutters. Six triple slit, hardened MICROMOT steel collets come with the machine and cover shank sizes of 1/32″, 1/16″, 5/64″, 3/32″, 7/64″ and 1/8″. The table is fitted with three T-slots of the 15/32″ x 15/64″ x 15/64″ MICROMOT-norm. An adjustable ruler scale eases the positioning of the work piece. All hand wheels are zero adjustable with 1 revolution = 3/64″, 1 division = .002″. Technical data: Speed 5,000 – 20,000 rpm Table Size 7 7/8″ x 2 3/4″ X-Y travel 5 17/64″ and 1 13/16″ respectively Vertical Travel 2 3/4″ Footprint Size 5 7/64″ x 8 55/64″ Height 13 25/64″ Max Power 100W Volts 110-120V AC, 60 Hz Weight 15.5 lb. 1-Hand wheels with zero adjustable scales: 1 revolution = 3/64″, 1 division = 002″ 2-Continuously variable speed from 5,000 – 20,000 rpm, perfect for even the smallest milling cutter. 3-Cutters are clamped in MICROMOT system collets. 4-Compound table of stable aluminum. Both axes are fitted with adjustable dovetail slides. 5-Six MICROMOT steel collets, triple slit and hardened, cover shank sizes from 1/32″ to 1/8″ 6-Stable cast iron base.Proxxon micro mill MF 70 – This small and beautiful unit is ideal – the accurate mill for lab, optician, jewelry, electronic and model building projects. Mill is made with a cast iron base. The vertical column and compound lathe are treated, high quality aluminum. All axes are play-free and have adjustable slides. The headstock, made of die cast aluminum, houses 24 pole balanced special motor and provides stability even at high operating speeds. This stability facilitates the use of the finest cutters. Comes with 6 triple slit hardened steel collets 1/32-Inch, 1/16-Inch, 5/64-Inch, 3/32-Inch, 7/64-Inch and 1/8-Inch (1.0, 1.5, 2.0, 2.35, 3.0 and 3.2mm) table has three T-slots and an adjustable ruler scale which eases the positioning of work-piece. All hand wheels are zero adjustable with one revolution equals 3/64-Inch (1.0mm) 1 division equals .002-Inch (0.05mm).

Product Features

  • Variable speed 5000-20000-Rpm with 1/8HP (100-Watts) motor; 110 to 120-Volt AC, 60 HZ
  • Table size 7-7/8-Inch by 2-3/4-Inch (200 by 700mm)
  • With X-Y travel, 5-17/64-Inch and 1-13/16-Inch vertical travel 2-3/4-Inch
  • 57/64 by 8-55/64-Inch (130 by 225 millimeter) weighs 15.5-Pound

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3 thoughts on “Proxxon 37110 Micro Mill MF 70”

  1. Mine works pretty well I have had one for about a year. I have both CNC and manual small mills (Taig and some chinese thing). For simple small parts made from relatively soft materials, I like it. It is a lot less fuss for the things I use it for.I don’t compare it to my other machines, really. It just isn’t the same league. I have used it to make simple parts and to prepare samples for analytical measurements, and for these things it is a great deal. I’m not going to build a robot chassis on it. But I make fasteners, spacers, small connecting rods, etc. It works. I have used it enough that the backlash adjustment has become second nature, and I cannot recall how much I measured. The other review seems to be of a mill with problems. Mine arrived fine, and I monkeyed with it very little before cutting, so I am a big fan.

  2. Disappointed I did a very thorough research before ordering the MF70 mill, and was impressed by the precision everyone said it has. The only complaint people gave against it was its small size and therefore limited range of use. But the price compared to other “micro mills” was also much less, so it seemed like a fair trade off. When I received mine I thought it was a bad one (previously used or tampered with) because the z-axis hand wheel had a full 1/4 turn of play. I wrote the US distributor of Proxxon and they replied that this phenomenon is common to this mill but not a problem as the machinist can work around it. The mill’s description on Amazon and elsewhere clearly says there is no play in any of the axes. I interpreted this as meaning there was no play that the user could feel (since there has to be some in order for it to be able to move). 1/4 turn is quite far from that. People do use this and have good experience with it, so I don’t know what the explanation is. I don’t want a mill with that much play. So I have returned it and am going to spend a good deal more and get either the Sherline or Taig mill.

  3. A beautiful little machine – mostly If you buy one of these looking for an advanced Dremel you will be very happy. If you’re looking for a mini Bridgeport, you may be a bit disappointed.The Proxxon MF-70 combines the utility of a Dremel with the precision of a mill. With it you’ll be able to perform many operations that would be difficult or impossible holding the Dremel in your hand. Before I decided on the MF-70, I considered cobbling together a mill from a Dremel 220-01 stand and a HF X-Y vise but the Dremel stand is crap and HF X-Y vises seemed expensive and crude. I also considered getting a Vanda-Lay ACRA rig, but when you add in the cost of the adjustable X and Z axes it approaches the cost of the MF-70, and you have to add your own Dremel. In my case the MF-70 was not the cheapest option but so far it’s been fun to have in the shop, and it has a lot of support if you want to go CNC. BTW I recommend picking up the 24260 precision vise, it complements the mill nicely.On the downside, the most disappointing aspect of the MF70 is that when cranking the X axis, the table deflects +/- 0.010″. That’s 20 thousandths total error. Using a twisting grip on the wheel rather than cranking the handle helps reduce this to a few thousandths. Tightening the gibs helps, however the motion then becomes “grabby.” The Z axis scale ring hangs up sometimes which throws it off zero and causes errors. I also wish the head rotated since it would be useful to position the spindle horizontally at times.Another review mentions the Z axis has a lot of play or backlash. Most likely the problem is that the Z axis stop nut was set too loosely at the factory. Here’s the fix: You’ll need a 2.5mm allen wrench and a deep 10mm socket. Remove the four allen bolts on the top cover of the Z pillar, unscrew the Z leadscrew from the spindle nut, and remove the top assembly from the mill. Slip the 10mm socket over the leadscrew and tighten the nylock stop nut under the cover (it’s left hand threaded so tighten to the left). Lightly snug the nut then back it off a bit so there’s minimal axial play and the handwheel turns freely. Reassemble and test. The Z axis will be much tighter.UPDATE: After less than a month, and used only on weekends, the motor died. It was running fine when it went “POP”, the GFCI it was plugged into tripped, and that was that. It’s currently at the Proxxon repair center in NC. This is very disappointing considering I’ve had a Dremel for years and it’s taken a beating and still runs strong. Apparently the handheld Proxxon unit also suffers from these types of failures. This review has dropped a star and will be updated after my repair experience.UPDATE 2: Prox-tech repaired the unit and it’s running again. The motor and controller board were replaced. This motor is noisier than the original, similar to what other reviewers have noted, but it is tight with no excessive play as far as I can tell. Turnaround time for the repair was ~2 weeks not including shipping. Since I’m wary the motor is going to die again I’ve been running it at lower speeds, well off max, and it seems to be running cooler. I hope it continues to run for years because it’s still a great little device and fun to use.

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