I started using a strong UV light made for printing plates. The light though had no what so ever effect on the paper. I was hoping that I could expose some literal material on the paper with the strong and hot light but well well.
Then the "frozen than baked in oven" method, but it did not do any spectacular effects. More controllable is the "cookie form laying on the zink paper and a hot iron pressing it down" method, it became an Elk

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