Activating 'Snap to"

LightBurn Software Questions
1

Hi,
Recently purchased an omtech polar+ laser and gradually ‘learning through use’ with LaserBurn - I am completely new to both lasers and the operating software btw. Despite checking both ‘snap
to grid’ and ‘snap to object’ (green in the corresponding boxes) I can not for the life of me get snap to work when drawing in the layout grid. Any suggestions as to what I am doing wrong or how to rectify this to make snapping work are greatly appreciate!

Secondly, can you advise what are the optimal settings - laser power and speed, for clean cutting of both 2 and 3mm clear acrylic sheet (perspex). Tried varying combinationsthe best being 65mm/m with power at 20% but this is really to slow for larger shapes/longer cuts. Again, any suggestion is appreciated.

Thank you!

2

With regards to ‘Snapping’, if you haven’t already this is worth a read:

3

Thank you :+1: will take a look

4

Here’s a video, it’s old but still relevant

5

Isn’t it somehow counterproductive to activate “snap to grid” and “snap to form” both at the same time?

6

It may be the snapping distances need tweaking to match your screen resolution, because the defaults may be entirely too small.

My display has about 100 DPI = 0.254 mm/pixel, so:

LightBurn - Snap settings
LightBurn - Snap settings686×373 18.4 KB

The 10 pixel Object Snap Distance works out to 2.5 mm, larger than the 1 mm Grid Snap Distance, so I can grab objects more easily than grid points.

For 3 mm acrylic with a 60 W CO₂ laser, I use 20 mm/s and 60% = 35-ish W with 14 l/m assist air.

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