Well they are not true galvos. The test in the video was more of a proof of concept test with stepper motors and good old Mach3.
While I was researching galvo scanner designs (which are unexpectedly expensive) many people were nixing the idea that a stepper motor could produce enough speed/accuracy to produce solid scan lines for a laser sintering type application. In ways they are correct in that steppers could never reach the insane scanning speeds of a true twin galvo motor but in regards to sintering nylon PA they were just flat wrong.
https://plus.google.com/collection/gYY_u
Thus far my test designs have proven quite successful. Right now I am working on a way to solve for the "pincushion" that occurs on larger scans. I am thinking that the only way to correct for this is via software....enter Auggie.
The laser is a 20W Co2. The beam is expanded 3x before going through my stepper galvo and then an F-Theta lens. I have been able to get beam diameters of ~.003" with this design.
Looking forward to the custom bitmap capabilities. I will likely be a heavy tester when that feature is released.
Brian
Well they are not true galvos. The test in the video was more of a proof of concept test with stepper motors and good old Mach3.
While I was researching galvo scanner designs (which are unexpectedly expensive) many people were nixing the idea that a stepper motor could produce enough speed/accuracy to produce solid scan lines for a laser sintering type application. In ways they are correct in that steppers could never reach the insane scanning speeds of a true twin galvo motor but in regards to sintering nylon PA they were just flat wrong.
https://plus.google.com/collection/gYY_u
Thus far my test designs have proven quite successful. Right now I am working on a way to solve for the "pincushion" that occurs on larger scans. I am thinking that the only way to correct for this is via software....enter Auggie.:)
The laser is a 20W Co2. The beam is expanded 3x before going through my stepper galvo and then an F-Theta lens. I have been able to get beam diameters of ~.003" with this design.
Looking forward to the custom bitmap capabilities. I will likely be a heavy tester when that feature is released.
Brian