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Amazon has the best deal (when you factor in shipping) on the Dremel 678-01 Circle Cutter, $10.80 w/ SS shipping.

The Dremel 678-01 Circle Cutter makes circles from 3/4″ to 12″. You drill/poke a small hole in the center of the workpiece and insert the pin center of the jig in it, and adjust the Dremel holder to get the correct diameter. It’s a good basic circle routing jig for the Dremel. It also has a straight edge guide that clamps to the tool, allowing you to follow an edge for straight cutting. Granted, for most jobs you want a router, but given that the Dremel now has cutout-tool like functions and cutters this is a good way of adding functionality to the simple Dremel tool.

Via Amazon [What’s This?]


10 Responses to Dealmonger: Dremel 678-01 Circle Cutter

  1. HammerDrill says:

    This looks similar to a HVAC tool that is used to cut openings in plenums or main duct trunks.

  2. Keith says:

    This rig is a decent tool (I have one and have used it on plastic

    But, with this type of hole cutter, leave three or four small tabs of
    uncut material equally spaced around the circle and cut those by hand.

    If you don’t, you may find near the end of your nice circular cut that
    the center pivot point that is guiding the tool is no longer fixed and
    you end up with an almost round hole in a piece of scrap.

    • H. Munster says:

      Good hint. I just bought one of these and have not used it yet. That did not occur to me, but it makes sense.

  3. mr. man says:

    A company called Proxxon has a line of tools that makes Dremel look like a children s toy. I’ve had one of their rotary tools for more than 15 years now. You simply can’t kill this thing.
    Three of my Dremels have expired in the same time period.

  4. fred says:

    @mr. man

    Our installers use Dremels just because they are are inexspensive and fairly reliable. Their bearings are not up to the quality of a die grinder – and certainly not up to the quality or cost (over $600 each) of the Ingersoll Rand G series die grinders that we use in the shop. If you can stand the size and have the application – we are using a makita electric die grinder in the field that works well:


    I also know a shop that uses Foredom tools which are also like Deremels in a way – but with the motor decoupled from the handpiece

  5. Doofus says:

    The basic Proxxxon tool costs three times as much as my Dremel did. So a three for one wear ratio seems about right.

  6. mr. man says:

    The Makita is a great choice. We also build a disposable tool allowance into some jobs. Scheduling backups and lost man hours related to tool failures is another matter. Always pack a spare I guess.

  7. eddie says:

    Proxxons may be good tools, but they are ridiculously expensive.

  8. KMR says:

    The Makita die grinders are nice… we have a couple of GEO600s – which unfortunately Makita decided to discontinue a few months ago. Looks like I’ll be searching for eBay spares if ours ever die.

  9. fred says:

    @ mr. man

    You’re absolutely right about the cost that comes from the loss of productivity. Of course one advantage of “naer disposables” like a Dremel – is that big boxes (like HD and Lowes) carry them and seem to be no more than a mile or 2 away from most of our jobsites – so buying a replacement is not a big producivity loss.

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