Hello,
I do a lot of print and cut stuff, and I was wondering if there is an option to offset home in order to save time and not do the print and cut calibration every time. Instead, I could just press home and the laser will go the “real” zero point.
Thanks!
Not sure how you think that will help your process. I’d be interested in understanding your workflow for this.
You can program a “go to” point in the move panel.
Hello,
When I press the home button, the laser is slightly outside the working area (as shown in the picture). I am using sheets that are 13x19 inches in size (see the picture), which have red dots for cutting out. Currently, I calibrate for “print and cut” using the black circles in the bottom left and top right corners. My idea is that if I can home the laser exactly at the 0/0 cm coordinates where my actual work area is, I wouldn’t need to do the “print and cut” calibration for each design. Although I have different designs with various holes, they are all printed on the same 13x19 inch sheets.
Thank you!
That’s interesting because every video from the “creators” states how perfect the Lasermatic is with their alignment.
I would see if there is any adjustment in the limit switches to bring the laser into alignment with the honeycomb. Maybe contact tech support about it.
In the mean time place your graphic corner to the known position in Lightburn, i.e. if the corner of your honeycomb, where you. want home to be, is X7 and Y3, set the lower left corner of your graphic at X7,Y3 using absolute coordinates of course. That will give the effect you were asking for.
Thats a good idea, I will try that.
This is the key to accurate repeatability.
Be sure your laser frame and honeycomb are both secured in position. What you are doing is using the honeycomb as a part fixture.
Both of mine are floating, so I have to set position and alignment with the Frame tool. I make a Tool layer matching the board and use Frame on that to align the part with the honeycomb. Takes me all of a minute to get it done and allows a lot of flexibility with various parts.
I would not mess with the Home switches. That is a known and accurate reference point.
I have one of the MK2 Roly Lasermatics and have found that, while the zero point isn’t actually zero (very close on the Y-axis, but about 2mm off on the X-axis), it is repeatable. It ALWAYS homes to the same exact spot. When using absolute coordinates, I merely adjust the design to be 2mm from the edge of the working area and everything is fine.
Thanks. I just checked and the offset is about 1mm on Y and 0.2mm on Z. I will try to laser something later and see if I can make it fit.
Start thinking about using fixtures for part placement and you will not notice that tiny offset of the Home position.
The cuts have to be very precise. The product has a PCB in the background with LEDs mounted and the paper I cut has the holes where the LEDs are. Each hole is just 2mm in diameter and the LEDs are 1.5mm in diameter so to make it fit the cuts need to be within 0.2mm.
When you said “sheets” above, I thought you were talking about thin sheets of plywood. Unless the paper is fairly stiff, I can see where you would have a physical placement problem.
I don’t know if I got it correctly, but you can save arbitrary positions in move window, so you can home and move to the desired position every time again.
