Top Positive Review for rc toys, fun sports, fashion, popular electronics on Banggood

15CM Photosensitive Dry Film Replace Thermal Transfer PCB Board Length 2M US$3.22 View It

Overall:

robblain 16/02/2018

Good product. Having hard time finding negqative developer, i can find lots of positive thouh.

Comments (2)

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s3nsit try baking soda from super market. This turns it into pure baking soda. Bake it on a clean pan for 10 minutes at a low to medium heat till it becomes sandy dry and not powdery and stops emitting gas. and the negative developer is ready. The mix for preparing developer is one teaspoon of negative developer to 300ml water.
Reply 17/02/2018

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ChiefEngineer plain old sodium carbonate (washing soda) can be found almost anywhere and works a treat.
Reply 26/02/2018

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