Hi Kram,
I would get an 80 watt laser to do this. The big problem with MDF is the glue which is harder to burn through than the wood. As I have said before on some other post, you could probably do it with less but it would take an awful long time and really burn the edges but with more power you can cut a lot faster with less charring and be a lot more productive. I wish I had a 100 watt laser now and I will get one as soon as I get married, finish off the renovations, go on my honeymoon and sove up the $22,000 they want for one.
(looks like I won't be getting one for a while) :-)
Someone with an 80 watt laser may want to chime in here and give us a more complete answer and let me know if I am wrong. Wish I had one to test :-)
Rich.
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