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It's been a while since I've posted something (or done anything interesting in that matter) but I finally found some time to start a new project. It is a small "precision" cnc mill. Some of you might remember this thread:
The old machine is big , pain in the ass to move and not really worth doing small stuff (not very precise).. but has been serving faithfully . So it was finally a time to start on that small "tabletop" machine I've been dreaming about. This time it will use ball lead screws and better linear guides. The thing will be driven with servo motors (X, Y) and a stepper for the Z. Here is a crappy picture of most of the linear components:
After about two months of fiddling here is the "final" 3D assembly of the CNC:
I've started cutting some parts. As the big machine hasn't been running for quite a while I've decided to start with something small. So here are the first plexi parts
Hi guys - some new parts today - motor couplers and small shaft holders. I've cut them from ertacetal - first time working with this material and it is great - really easy to cut and in the meantime strong and a bit flexible.
few more plexy parts. With those most of the "soft" parts are done. Time to start cutting that aluminum. About 3D printing - I've seen a professional 3D printer and the stuff produced by it - it can do amazing stuff
Registered Member #65
Joined: Thu Feb 09 2006, 06:43AM
Location:
Posts: 1155
@Dr. H. The mini mill we have is based on a rebuilt Taig, and runs off the same PC power supply for LinuxCNC (EMC). For a little XYZ system like yours, HeeksCNC would handle most of the gcode CAM for you..
We also have a Prusa calibrated for ABS or PLA, and it does parts even the 5-axis would find impossible. For example, we've printed the Tesla valve-conduit as a single piece for fun. Note too, there are people who simply added extruder chucks (4th-axis A drive) to their mills, and indeed Slic3r will export gcode for EMC in “general†settings....
Some people 3D print in PLA, as the starch based plastic burns out of a sand mold. Then take the rough cast shapes to mill to tolerances on the CNC. However, uttering tolerances in the same breath as plastic or aluminum mills is a bit of a joke.
I have to try 3D printing a solder mask next.... Rod
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Small CNC Mill - mechanics finished
. So it was finally a time to start on that small "tabletop" machine I've been dreaming about. This time it will use ball lead screws and better linear guides. The thing will be driven with servo motors (X, Y) and a stepper for the Z. Here is a crappy picture of most of the linear components:
