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(→Historikk / History: document test with aluminum) |
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== Historikk / History == | == Historikk / History == | ||
| + | ; 2024-03-20 : tested with 0.5 mm aluminium with success. The tool was 1.5 mm copper. Feedrate we think was 72 mm / min, because of the limit of the lowest pulse rate (240 Hz) that the avr 328p platform can generate with default grbl (with AMASS on. See grbl/config.h and <code>#define ADAPTIVE_MULTI_AXIS_STEP_SMOOTHING</code>). | ||
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; 2024-03-20 : tested with titanium (0.5 mm) but we had limited success, because our minimum feedrate (both plunging and X / Y moves) was too high. This seems to be a limitation of the controller. | ; 2024-03-20 : tested with titanium (0.5 mm) but we had limited success, because our minimum feedrate (both plunging and X / Y moves) was too high. This seems to be a limitation of the controller. | ||
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== Referanser == | == Referanser == | ||
Revisjonen fra 20. mar. 2024 kl. 21:31
HEDMA is a hackable homemade EDM[1] machine.
Documentation is in the FabricateEDM[2] repository.
Innhold
Maskin / Machine
The machine is homemade, using existing machines and parts.
Motion platform
The motion platform is a Ultimaker 1[3] 3D printer.
Controller
We have replaced the original controller with an OpenBuilds Blackbox[4], and use an OpenBuilds Interface[5]
Power supply
We are using the Powercore V1. Manual[6], hardware[7], firmware[8].
Programware / software
EDMWeb[9] is the CAM software used.
Sikkerhet / safety
- do not touch when running
- stop cutting if a short occurs
- run only with dielectric fluid in the bath
Bruk / usage
The powercore guys made a nice video: Powercore V1 Quickstart Guide[10].
You need to have a dielectric fluid in the bath, de-ionized water is good. The workpiece is connected to the anode (positive side) and the tool to the cathode (negative side).
Plassering / location
The machine lives in a corner of the printer room.
Historikk / History
- 2024-03-20
- tested with 0.5 mm aluminium with success. The tool was 1.5 mm copper. Feedrate we think was 72 mm / min, because of the limit of the lowest pulse rate (240 Hz) that the avr 328p platform can generate with default grbl (with AMASS on. See grbl/config.h and
#define ADAPTIVE_MULTI_AXIS_STEP_SMOOTHING).
- 2024-03-20
- tested with titanium (0.5 mm) but we had limited success, because our minimum feedrate (both plunging and X / Y moves) was too high. This seems to be a limitation of the controller.
Referanser
- ↑ EDM
- ↑ https://github.com/Fabricatable-Machines/FabricateEDM FabricateEDM
- ↑ https://reprap.org/wiki/Ultimaker Ultimaker
- ↑ https://openbuilds.com/builds/blackbox-motion-control-system.8320/
- ↑ https://openbuilds.com/builds/interface-cnc-touch-control-system.9688/
- ↑ https://github.com/Rack-Robotics/Powercore-V1.0-Manual
- ↑ https://github.com/Rack-Robotics/Powercore-V1.0-Hardware
- ↑ https://github.com/Rack-Robotics/Powercore-V1.0-Firmware
- ↑ https://github.com/Rack-Robotics/EDMWeb
- ↑ https://www.youtube.com/watch?v=FpUhpkBXa6Q
