21 Step Wedge Exposure Calculator
Having trouble dialing in those exposure times? This calculator is an easy way to ensure you're getting the proper exposure times. The size of this is 1/2" x 3 3/4" so you can place it on your screen while exposing your image without it interfering.
How to Use:
Place the calculator on the screen as you would your regular image. And run the exposure time you think is correct. When you wash out your image, you want your step to have 7 solid steps left.
Don't know where to start? Try plugging in these numbers go from there:
Pre-sensitized emulsion with 500watt halogen light.
Try starting with 10 minutes.
2 part diazo emulsion with 500watt halogen light.
Try starting with 15 minutes.
Pre-sensitized emulsion with multiple UV fluorescent bulbs.
Try starting with 3 minutes.
2 part diazo emulsion with multiple UV fluorescent bulbs.
Try starting with 6 minutes. quiz
If you still need a little more help trying to figure out how to use one visit our blog - How to use a 21 Step Wedge
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iNeed a link for a video that shows me how to use this thing please.
Easy to use, dialed my exposure times in, does what it says it does.
I've seen miracles spoken of this exposure calculator for dialing in exposure times. However, it assumes that you are printing your designs on transparencies with ink. I haven't made the investment in a good photo printer yet, so I'm still printing on vellum with my old laser printer. If I use the exposure calculator with that, I end up with very overexposed screens because the toner lets way too much light through. Once I step up to ink on film, I'm sure this will be incredibly useful.
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