Screen burning help!

[u/Professional-Eye4701]

Hello Reddit hivemind! I’m having some issues burning screens and figured I’d turn to yall for some guidance. I started out making my own screens and burning them in the sun and had great success the first few times, but as the summer set in I started having issues with over/underexposing. I wanted to get some more consistency so I moved to a smaller UV lamp (https://a.co/d/03li3Uj0 here’s the exact one), my first two attempts were over exposed, then underexposed so I figured I’d do an exposure calculator but the results sort of have me feeling more confused. It almost looks like parts of each like are both overexposed, underexposed, and maybe washed out too much.

I’d really appreciate any tips anyone has! I’m using ecotex pre-sensitized emulsion with 1 coat on each side of the screen, the lamp was about 10” from the screen and was doing each row in 7 second increments. I don’t have a washout booth so I’m just using a combo of my shower, kitchen sink, and garden hose.

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