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Laser cutter transmissive window

Laser cutter transmissive window

Laser cutter transmissive window

(OP)
I am cutting a fabric material using a laser cutter. It can be difficult to cut this particular material because wrinkles easily and does lie flat.

I would like to use some kind of glass plate to hold down the work piece. Is there a glass material that is NIR transmissive enough to not be cut by the laser and that is readily available in sheets?

RE: Laser cutter transmissive window

(OP)
I meant to write that the work material does NOT lie flat.

RE: Laser cutter transmissive window

The best you can really hope for is to have two pieces on either side of the cut.  Your laser is presumably focussed on the workpiece, which means that anything actually touching the workpiece will be seeing a high energy flux, and possibly some heat from the cutting itself.  Additionally, anything that you can see through will change the focus of the laser.

TTFN

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RE: Laser cutter transmissive window

we had a similar problem cutting woven mesh on our Amada LC alpha, 2 solutions, that particular machine has a contact head with ball bearings that push the sheet down. The other was to make a picture frame jig, ie 2 sheets with big cut outs in, sandwiching the material to be cut, we hinged ours for ease of use   

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