Hi David

Most laser cutting contractors can read multiple formats

The DXF format is pretty universal.
So is the DWG format.

You might want to try Draftsight (Free) from Dassault Systems a heavyweight company
It can export the formats you need. There is lots of support for it on the net.

**LINK**

PDF is not a good choice for laser cutting, it requires messy conversion. OK for printing on paper.

Many CAD programs will export to DXF files. If you have a choice choose an older version of DXF export. Some contractors do not have the latest software. You can ask them which version they can work with. Cutting files are just simple outlines no problem for older versions.

Most contractors prefer a separate file for each part to be cut from a larger sheet. Many prefer to do their own part nesting. Ask them to email you a sheet listing their preferred format and file structure. Make sure the drawings are ready to cut. If the contractor has to do it you will pay more.

Make sure the outline of the part contains properly joined but not overlapping endpoints, no gaps (a continuous line right around an object or hole is needed). Hole diameters should not be less than the thickness of the sheet or larger particularly when dealing with plate over 5mm. Contractors with later model cutting machines can better this but it is a good rule of thumb. Ask your contractor.

You can supply your own material or let the laser cutter supply. If you are buying steel sheet in smaller quantities you may find the laser cutters material somewhat cheaper. and you wont get stuck with material delivery charges and minimums.

Regards
John

Edited By John McNamara on 10/08/2015 13:55:37