.DXF and offset questions

Chris Block · **Joined:** Wed Sep 10, 2008 4:37 pm **Posts:** 14

1) Can I submit .dxf file for stencil designs?

We can accept DXF files for your stencil. We also regularly use Gerbers and DWG's.

2) What is the laser kerf for 0.005" thick stainless sheet?

The laser kerf for .005" foil is about .0005" this will be split between both sides of the apreture as only one side of the laser beam is making contact with the material at any one given time. You can expect .00025" per side. The laser kerf increases as material thickness increases and would be about .0005" per side at .010"-.012" material

3) Relating to question #2, how far should I offset the dimensions inwards for pads rectangles to achieve desired dimensional outcome in final laser cut stencil?

You should NOT adjust your apreture sizes for my laser beam diameter. We run weekly tests to determine actual laser beam size and imput that into our software that automaticaly compensates cutting path for beam diameter when the cutting path is calculated by the software.

4) What are minimum dimensions (spacing between adjacent cuts, minimum rectangle dimensions)?

The minimum spacing between adjacent cuts will vary depending on thickness however with .005" foil the minimum spacing can easily be down to and below .008". For instance a .016" pitched component.

The recconemded minimum rectangle width would be 1.5x the thickiness of the material thickness. In this case .075" would be the thinest cut we would want to put in .005" material

Thank you, I didn't see technical detail like this anywhere on this forum or website.

Thank you for your questions.

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