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Showing results for tags 'rotary tool'.
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Dear all There do not seem to be too many information on the performance of the Proxon rotary tools and especially how they compare to the very common Dremel. I thought I d post my experience and opinion on this issue. I got a Dremel 3000 with the flexible attachment about 4 years ago. It recently failed and I bought a Proxxon Micromot 60. Now, in my opinion the reason the Dremel failed is actually a design and material fault. It has a locking pin so that the shaft will not rotate and the jaws can be unlocked. This is however very shallow, engages the shaft maybe less than 1 mm and the pin is not hardened-nor is the shaft. So it is a matter of time to get worn and then simply the jaws cannot open. Replacement is £15 in the UK. I was actually given a replacement locking pin but after installing it the whole assembly is a bit worn so it does not work very well and cannot take much pressure and even the new pin slips. Better to buy a whole new unit at £45. In regards to the flexible shaft, personally I did not find it useful at all. Some pictures now. The most common complaint is that you absolutely have to buy the Proxxon power source. I already had it so buying the Proxxon made sense. Now, the Proxxon is smaller and lighter. It only needs finger tightening whereas the Dremel needs a small wrench-this is actually important. The Dremel goes up to crazy speeds but due to lack of torque it slows down. The Proxxon seems to have a lot of torque and does not slow down-less vibration as well but only goes to 20,000 rpm or so and it is more pleasant to use. This is the locking pin that commonly fails. It is tiny. I have not seen the pin on the Proxxon but it seems to have much longer travel and be more robust. Actually, I installed the new pin and tried to unlock the chuck. I did not operate the tool but just by trying, the pin already got worn! Another piece that got worn is the part that compresses the collets as well as the wrench. The collets are also different. The Proxxon ones are larger, harder and have three jaws. They look and probably are better but I have had no issue with the Dremel ones. Overall, the Proxxon seems to be the nicer tool but is more expensive. Proxxon also makes a 220 V version that seems pretty good and more powerful. The Dremel may be better for DIY but for modelling, this Proxxon tool is very nice. Ona final note, I bought the Proxxon chuck to replace the collets but apparently it cannot be fitted on this tool-shame Vaddoc
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Hello, I thought this milling fixture for a Dremel tool might be of interest to builders. I haven't built one and so I can't attest to its precision. But if it were built with care it might be serviceable. The thin jam nuts on the lead screws should take up backlash. One thing that might be an improvement is to make adjustable gibs for the ways, such as are found on Sherline mills. Another possible improvement might be to install sintered bronze bushing/bearings or 8mm skatewheel bearings and threaded rod instead of the wooden bearing blocks, although the hard maple bearings should last a long time if they are soaked with oil. http://woodarchivist.com/1624-diy-milling-machine/ The rest of the site might be of interest to you as well.- 13 replies
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