Desktop CNC mill nearly done, already cutting its own parts

Oct 17, 2026 Last reply: 1 hour ago 3 Replies
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Getting a desktop CNC milling machine to the nearly finished stage is no small task, and the maker has handled one of the trickiest parts in a neat way: parts for the machine have been made using the machine itself. Bootstrapping a build like that takes patience, and it suggests the mill is already accurate enough to produce its own components.



The latest run was a test of toolpath settings and of whether the chip control measures work properly. The machine cut a rectangular aluminum piece held in a vise, with the end mill performing circular pocket milling into the stock. Several machined circular recesses and a curved cut were already visible in the aluminum, and after completing a circular contouring path the tool retracted vertically.



Plenty of details stand out. The spindle wears a blue cover with a white emblem of two overlapping outlines, and the small end mill sits in a collet chuck with a multicolored coating. A flexible segmented orange and yellow nozzle with a brass tip points toward the cutter. Inside the see-through enclosure door there are linear guide rails and a vertical drive screw, a cylindrical tool setter is mounted on a bracket to the right, and the bed is a T-slot type.



One open question remains: it is not confirmed whether the chip control measures actually worked properly, even though metal chips were scattered across the vise and bed during cutting. The maker also has not said which frame the machine uses. Those answers will be worth watching for as the build wraps up.


The segmented flexible nozzle aimed at the cutter seems like a smart choice to me. A segmented hose can be bent into position and hold its shape, which feels handy around a compact machine. The trade-off I see is that a segmented hose might shift out of aim over time, so the brass tip position could need a check between runs.

Does the maker lower each tool onto the cylindrical tool setter before a run to establish tool length, or is that handled some other way? I ask because the setter sits on a bracket to the right of the cutting area, and I would like to know how it fits into the routine.

One variation worth trying: add a second flexible nozzle aimed from the opposite side of the cutter. Chips were scattered across the vise and bed during the test cut, and whether the current chip control measures worked properly is still unconfirmed, so approaching the cutting zone from two directions seems like a sensible experiment before judging the setup.

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